/* ================================================================
   STUDYFLOW DESIGN SYSTEM
   ================================================================ */

/* === 1. DESIGN TOKENS === */
:root {
  --sf-primary: #2563eb;
  --sf-primary-dark: #1d4ed8;
  --sf-primary-light: #3b82f6;
  --sf-primary-bg: #eff6ff;
  --sf-primary-border: #bfdbfe;

  --sf-slate-50: #f8fafc;
  --sf-slate-100: #f1f5f9;
  --sf-slate-200: #e2e8f0;
  --sf-slate-300: #cbd5e1;
  --sf-slate-400: #94a3b8;
  --sf-slate-500: #64748b;
  --sf-slate-600: #475569;
  --sf-slate-700: #334155;
  --sf-slate-800: #1e293b;
  --sf-slate-900: #0f172a;

  --sf-success: #059669;
  --sf-success-dark: #047857;
  --sf-success-bg: #ecfdf5;
  --sf-success-border: #a7f3d0;
  --sf-success-text: #065f46;

  --sf-warning: #d97706;
  --sf-warning-dark: #b45309;
  --sf-warning-bg: #fffbeb;
  --sf-warning-border: #fde68a;
  --sf-warning-text: #92400e;

  --sf-danger: #dc2626;
  --sf-danger-dark: #b91c1c;
  --sf-danger-bg: #fef2f2;
  --sf-danger-border: #fecaca;
  --sf-danger-text: #991b1b;

  --sf-purple-bg: #f5f3ff;
  --sf-purple: #7c3aed;

  --sf-bg: #f8fafc;
  --sf-surface: #ffffff;
  --sf-border: #e2e8f0;
  --sf-border-subtle: #f1f5f9;

  --sf-shadow-xs: 0 1px 2px rgba(15,23,42,0.04);
  --sf-shadow-sm: 0 1px 3px rgba(15,23,42,0.08), 0 1px 2px rgba(15,23,42,0.04);
  --sf-shadow-md: 0 4px 8px rgba(15,23,42,0.08), 0 2px 4px rgba(15,23,42,0.04);
  --sf-shadow-lg: 0 12px 24px rgba(15,23,42,0.08), 0 4px 8px rgba(15,23,42,0.04);
  --sf-shadow-xl: 0 24px 48px rgba(15,23,42,0.12), 0 8px 16px rgba(15,23,42,0.06);

  --sf-radius-xs: 4px;
  --sf-radius-sm: 6px;
  --sf-radius: 10px;
  --sf-radius-md: 12px;
  --sf-radius-lg: 14px;
  --sf-radius-xl: 18px;
  --sf-radius-full: 9999px;

  --sf-nav-height: 58px;

  /* Bootstrap overrides */
  --bs-primary: #2563eb;
  --bs-primary-rgb: 37,99,235;
  --bs-success: #059669;
  --bs-success-rgb: 5,150,105;
  --bs-danger: #dc2626;
  --bs-danger-rgb: 220,38,38;
  --bs-warning: #d97706;
  --bs-warning-rgb: 217,119,6;
  --bs-info: #0284c7;
  --bs-info-rgb: 2,132,199;
  --bs-secondary: #64748b;
  --bs-secondary-rgb: 100,116,139;
  --bs-body-font-family: 'Inter', 'Segoe UI Variable', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --bs-body-font-size: 0.9375rem;
  --bs-body-color: #334155;
  --bs-body-bg: #f8fafc;
  --bs-border-color: #e2e8f0;
  --bs-border-radius: 10px;
  --bs-border-radius-sm: 6px;
  --bs-border-radius-lg: 14px;
  --bs-border-radius-xl: 18px;
  --bs-border-radius-pill: 9999px;
  --bs-link-color: #2563eb;
  --bs-link-hover-color: #1d4ed8;
  --bs-card-border-radius: 12px;
  --bs-card-border-color: #e2e8f0;
}

/* === 2. BASE === */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; position: relative; min-height: 100%; }

body {
  font-family: var(--bs-body-font-family);
  background: var(--sf-bg);
  color: var(--sf-slate-700);
  line-height: 1.6;
  font-size: 0.9375rem;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  margin-bottom: 0;
}

/* === 3. TYPOGRAPHY === */
h1, h2, h3, h4, h5, h6,
.h1, .h2, .h3, .h4, .h5, .h6 {
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--sf-slate-900);
  line-height: 1.25;
}
h1, .h1 { font-size: 1.625rem; font-weight: 700; letter-spacing: -0.025em; }
h2, .h2 { font-size: 1.3125rem; }
h3, .h3 { font-size: 1.125rem; }
h4, .h4 { font-size: 1rem; }
p { margin-bottom: 0; }
a { color: var(--sf-primary); text-decoration: none; transition: color 0.15s; }
a:hover { color: var(--sf-primary-dark); }
.text-muted { color: var(--sf-slate-500) !important; }
.fw-semibold { font-weight: 600 !important; }

/* === 4. NAVBAR === */
.sf-nav {
  position: sticky;
  top: 0;
  z-index: 1040;
  height: var(--sf-nav-height);
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--sf-border);
  display: flex;
  align-items: center;
}

.sf-nav-container {
  display: flex;
  align-items: center;
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
  gap: 1rem;
}

.sf-nav-logo {
  display: flex;
  align-items: center;
  gap: 0;
  text-decoration: none;
  flex-shrink: 0;
  transition: opacity 0.15s;
}
.sf-nav-logo:hover { opacity: 0.75; }

.sf-logo-svg {
  display: block;
  height: 30px;
  width: auto;
}

/* Legacy icon — kept for backward compat but unused */
.sf-logo-icon {
  width: 28px;
  height: 28px;
  background: var(--sf-primary);
  border-radius: 7px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 0.875rem;
  flex-shrink: 0;
}

.sf-nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
  flex: 1;
}

.sf-nav-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 10px;
  border-radius: var(--sf-radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--sf-slate-600);
  text-decoration: none;
  transition: background 0.15s, color 0.15s;
  white-space: nowrap;
  border: none;
  background: transparent;
  cursor: pointer;
}
.sf-nav-link i { font-size: 0.875rem; opacity: 0.8; }
.sf-nav-link:hover { background: var(--sf-slate-100); color: var(--sf-slate-900); }
.sf-nav-link.active { background: var(--sf-primary-bg); color: var(--sf-primary); }
.sf-nav-link.active i { opacity: 1; }
.sf-nav-link.active:hover { background: var(--sf-primary-bg); color: var(--sf-primary-dark); }

.sf-nav-actions {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
  flex-shrink: 0;
}

.sf-avatar-btn {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 4px 8px 4px 4px;
  border-radius: var(--sf-radius-full);
  border: 1px solid transparent;
  background: transparent;
  cursor: pointer;
  transition: all 0.15s;
  text-decoration: none;
}
.sf-avatar-btn:hover { background: var(--sf-slate-100); border-color: var(--sf-border); }
.sf-avatar-btn::after { display: none; }

.sf-avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: linear-gradient(135deg, #3b82f6, #2563eb);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  flex-shrink: 0;
  letter-spacing: 0.04em;
}

.sf-avatar-name {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--sf-slate-700);
  max-width: 130px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sf-nav-burger {
  display: none;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--sf-radius-sm);
  border: 1px solid var(--sf-border);
  background: transparent;
  cursor: pointer;
  color: var(--sf-slate-600);
  font-size: 1.2rem;
  flex-shrink: 0;
}

.sf-mobile-nav {
  position: fixed;
  top: var(--sf-nav-height);
  left: 0;
  right: 0;
  background: white;
  border-bottom: 1px solid var(--sf-border);
  padding: 0.625rem;
  box-shadow: var(--sf-shadow-md);
  z-index: 1039;
  display: none;
  flex-direction: column;
  gap: 2px;
  animation: sf-slide-down 0.18s ease;
}
.sf-mobile-nav.show { display: flex; }
.sf-mobile-nav .sf-nav-link { padding: 9px 12px; font-size: 0.9375rem; }

/* Dropdown */
.sf-dropdown .dropdown-menu {
  border: 1px solid var(--sf-border);
  border-radius: var(--sf-radius-md);
  box-shadow: var(--sf-shadow-lg);
  padding: 6px;
  margin-top: 6px;
  min-width: 190px;
}
.sf-dropdown .dropdown-item {
  border-radius: var(--sf-radius-sm);
  padding: 7px 10px;
  font-size: 0.875rem;
  color: var(--sf-slate-700);
  display: flex;
  align-items: center;
  gap: 8px;
  transition: background 0.12s;
}
.sf-dropdown .dropdown-item:hover { background: var(--sf-slate-100); color: var(--sf-slate-900); }
.sf-dropdown .dropdown-item.text-danger { color: var(--sf-danger); }
.sf-dropdown .dropdown-item.text-danger:hover { background: var(--sf-danger-bg); color: var(--sf-danger-dark); }
.sf-dropdown .dropdown-divider { border-color: var(--sf-border-subtle); margin: 4px 0; }
.sf-dropdown .dropdown-header {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--sf-slate-400);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 4px 10px 2px;
}

/* === 5. PAGE LAYOUT === */
.sf-page {
  max-width: 1280px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}
.sf-page-sm {
  max-width: 720px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}
.sf-page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.75rem;
}
.sf-page-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--sf-slate-900);
  margin: 0 0 3px;
  letter-spacing: -0.025em;
}
.sf-page-subtitle { font-size: 0.875rem; color: var(--sf-slate-500); margin: 0; }
.sf-breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.8125rem;
  color: var(--sf-slate-500);
  margin-bottom: 0.75rem;
  text-decoration: none;
  transition: color 0.15s;
}
.sf-breadcrumb:hover { color: var(--sf-slate-700); }
.sf-breadcrumb i { font-size: 0.75rem; }

/* === 6. CARDS === */
.sf-card {
  background: var(--sf-surface);
  border: 1px solid var(--sf-border);
  border-radius: var(--sf-radius-md);
  box-shadow: var(--sf-shadow-sm);
}
.sf-card-hover {
  transition: box-shadow 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
}
.sf-card-hover:hover {
  box-shadow: var(--sf-shadow-md);
  transform: translateY(-2px);
  border-color: var(--sf-slate-300);
}
.sf-card-p { padding: 1.375rem; }
.sf-card-p-sm { padding: 1rem; }
.sf-card-p-lg { padding: 1.75rem; }
.sf-card-header {
  padding: 1rem 1.375rem;
  border-bottom: 1px solid var(--sf-border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}
.sf-card-title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--sf-slate-800);
  margin: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Stat cards */
.sf-stat {
  background: var(--sf-surface);
  border: 1px solid var(--sf-border);
  border-radius: var(--sf-radius-md);
  box-shadow: var(--sf-shadow-sm);
  padding: 1.25rem 1.375rem;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}
.sf-stat-body { flex: 1; min-width: 0; }
.sf-stat-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--sf-slate-500);
  margin-bottom: 0.375rem;
}
.sf-stat-value {
  font-size: 1.875rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--sf-slate-900);
  line-height: 1;
  margin-bottom: 0.25rem;
}
.sf-stat-desc { font-size: 0.8125rem; color: var(--sf-slate-500); }
.sf-stat-icon {
  width: 38px;
  height: 38px;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}
.sf-stat-icon-blue { background: var(--sf-primary-bg); color: var(--sf-primary); }
.sf-stat-icon-green { background: var(--sf-success-bg); color: var(--sf-success); }
.sf-stat-icon-amber { background: var(--sf-warning-bg); color: var(--sf-warning); }
.sf-stat-icon-red { background: var(--sf-danger-bg); color: var(--sf-danger); }
.sf-stat-icon-purple { background: var(--sf-purple-bg); color: var(--sf-purple); }

/* === 7. BOOTSTRAP CARD OVERRIDES === */
.card {
  border: 1px solid var(--sf-border);
  border-radius: var(--sf-radius-md);
  box-shadow: var(--sf-shadow-sm);
  background: var(--sf-surface);
}
.card-body { padding: 1.375rem; }
.card-header {
  padding: 1rem 1.375rem;
  border-bottom: 1px solid var(--sf-border-subtle);
  background: transparent;
  font-weight: 600;
  font-size: 0.9375rem;
}
.card-footer {
  padding: 0.875rem 1.375rem;
  border-top: 1px solid var(--sf-border-subtle);
  background: transparent;
}

/* === 8. BUTTONS === */
.btn {
  font-family: var(--bs-body-font-family);
  font-weight: 500;
  font-size: 0.875rem;
  padding: 7px 14px;
  border-radius: 8px;
  line-height: 1.4;
  transition: background 0.15s, border-color 0.15s, box-shadow 0.15s, transform 0.1s, color 0.15s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.btn:active { transform: translateY(1px); }
.btn i { font-size: 0.875rem; }

.btn-primary { background: var(--sf-primary); border-color: var(--sf-primary); color: white; }
.btn-primary:hover, .btn-primary:focus {
  background: var(--sf-primary-dark); border-color: var(--sf-primary-dark); color: white;
  box-shadow: 0 0 0 3px rgba(37,99,235,0.15);
}
.btn-success { background: var(--sf-success); border-color: var(--sf-success); color: white; }
.btn-success:hover, .btn-success:focus {
  background: var(--sf-success-dark); border-color: var(--sf-success-dark); color: white;
  box-shadow: 0 0 0 3px rgba(5,150,105,0.15);
}
.btn-danger { background: var(--sf-danger); border-color: var(--sf-danger); color: white; }
.btn-danger:hover { background: var(--sf-danger-dark); border-color: var(--sf-danger-dark); color: white; }
.btn-warning { background: var(--sf-warning); border-color: var(--sf-warning); color: white; }
.btn-warning:hover { background: var(--sf-warning-dark); border-color: var(--sf-warning-dark); color: white; }
.btn-secondary { background: var(--sf-slate-100); border-color: var(--sf-border); color: var(--sf-slate-700); }
.btn-secondary:hover { background: var(--sf-slate-200); border-color: var(--sf-slate-300); color: var(--sf-slate-900); }
.btn-outline-primary { border-color: var(--sf-primary-border); color: var(--sf-primary); background: transparent; }
.btn-outline-primary:hover { background: var(--sf-primary-bg); border-color: var(--sf-primary); color: var(--sf-primary-dark); }
.btn-outline-secondary { border-color: var(--sf-border); color: var(--sf-slate-600); background: var(--sf-surface); }
.btn-outline-secondary:hover { background: var(--sf-slate-100); border-color: var(--sf-slate-300); color: var(--sf-slate-900); }
.btn-outline-danger { border-color: var(--sf-danger-border); color: var(--sf-danger); background: transparent; }
.btn-outline-danger:hover { background: var(--sf-danger-bg); border-color: var(--sf-danger); color: var(--sf-danger-dark); }
.btn-outline-success { border-color: var(--sf-success-border); color: var(--sf-success); background: transparent; }
.btn-outline-success:hover { background: var(--sf-success-bg); border-color: var(--sf-success); color: var(--sf-success-dark); }
.btn-outline-warning { border-color: var(--sf-warning-border); color: var(--sf-warning); background: transparent; }
.btn-outline-warning:hover { background: var(--sf-warning-bg); border-color: var(--sf-warning); color: var(--sf-warning-dark); }
.btn-link { color: var(--sf-primary); text-decoration: none; padding: 0; }
.btn-link:hover { color: var(--sf-primary-dark); }
.btn-lg { padding: 9px 18px; font-size: 0.9375rem; border-radius: 10px; }
.btn-sm { padding: 4px 10px; font-size: 0.8125rem; border-radius: 6px; }

/* === 9. FORMS === */
.form-control,
.form-select {
  font-family: var(--bs-body-font-family);
  font-size: 0.9375rem;
  color: var(--sf-slate-800);
  background: var(--sf-surface);
  border: 1px solid var(--sf-slate-300);
  border-radius: 8px;
  padding: 8px 12px;
  transition: border-color 0.15s, box-shadow 0.15s;
  line-height: 1.5;
}
.form-control:focus,
.form-select:focus {
  border-color: var(--sf-primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
  outline: none;
  color: var(--sf-slate-900);
  background: var(--sf-surface);
}
.form-control::placeholder { color: var(--sf-slate-400); }
.form-control-lg, .form-select-lg { padding: 10px 14px; font-size: 1rem; }
.form-control-sm, .form-select-sm { padding: 5px 9px; font-size: 0.8125rem; border-radius: 6px; }
.form-label { font-size: 0.875rem; font-weight: 500; color: var(--sf-slate-700); margin-bottom: 6px; }
.form-text { font-size: 0.8125rem; color: var(--sf-slate-500); margin-top: 5px; }
.form-check-input:checked { background-color: var(--sf-primary); border-color: var(--sf-primary); }
.form-check-input:focus { box-shadow: 0 0 0 3px rgba(37,99,235,0.15); border-color: var(--sf-primary); }
.form-switch .form-check-input:checked { background-color: var(--sf-primary); }

/* form-floating fix */
.form-floating > .form-control-plaintext::placeholder,
.form-floating > .form-control::placeholder { color: var(--bs-secondary-color); text-align: end; }
.form-floating > .form-control-plaintext:focus::placeholder,
.form-floating > .form-control:focus::placeholder { text-align: start; }

/* Validation */
.text-danger { color: var(--sf-danger) !important; }
.field-validation-error { font-size: 0.8125rem; color: var(--sf-danger); display: block; margin-top: 4px; }
.field-validation-valid { display: none; }
.input-validation-error { border-color: var(--sf-danger) !important; }
.input-validation-error:focus { box-shadow: 0 0 0 3px rgba(220,38,38,0.1) !important; }
.validation-summary-errors {
  background: var(--sf-danger-bg);
  border: 1px solid var(--sf-danger-border);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 0.875rem;
  color: var(--sf-danger-text);
  margin-bottom: 1rem;
}
.validation-summary-errors ul { padding-left: 0; list-style: none; margin: 0; }
.validation-summary-valid { display: none; }

/* === 10. BADGES === */
.badge { font-size: 0.75rem; font-weight: 500; border-radius: var(--sf-radius-full); padding: 3px 9px; line-height: 1.4; }
.bg-primary { background-color: var(--sf-primary) !important; }
.bg-success { background-color: var(--sf-success) !important; }
.bg-danger { background-color: var(--sf-danger) !important; }
.bg-warning { background-color: var(--sf-warning) !important; }
.bg-secondary { background-color: var(--sf-slate-500) !important; }
.bg-info { background-color: #0284c7 !important; }

/* Status badges */
.sf-status {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  border-radius: var(--sf-radius-full);
  font-size: 0.75rem;
  font-weight: 500;
  white-space: nowrap;
}
.sf-status-pending { background: var(--sf-slate-100); color: var(--sf-slate-600); }
.sf-status-viewed { background: var(--sf-primary-bg); color: var(--sf-primary); }
.sf-status-interview { background: var(--sf-purple-bg); color: var(--sf-purple); }
.sf-status-accepted { background: var(--sf-success-bg); color: var(--sf-success); }
.sf-status-rejected { background: var(--sf-danger-bg); color: var(--sf-danger); }
.sf-status-withdrawn { background: var(--sf-slate-100); color: var(--sf-slate-400); }
.sf-status-overdue { background: var(--sf-danger-bg); color: var(--sf-danger); }
.sf-status-completed { background: var(--sf-success-bg); color: var(--sf-success); }

/* === 11. ALERTS === */
.alert {
  border-radius: 10px;
  padding: 11px 14px;
  font-size: 0.875rem;
  border-width: 1px;
  display: flex;
  align-items: flex-start;
  gap: 9px;
}
.alert i { margin-top: 1px; flex-shrink: 0; }
.alert-success { background: var(--sf-success-bg); border-color: var(--sf-success-border); color: var(--sf-success-text); }
.alert-danger { background: var(--sf-danger-bg); border-color: var(--sf-danger-border); color: var(--sf-danger-text); }
.alert-warning { background: var(--sf-warning-bg); border-color: var(--sf-warning-border); color: var(--sf-warning-text); }
.alert-info { background: var(--sf-primary-bg); border-color: var(--sf-primary-border); color: #1e40af; }
.alert-dismissible { padding-right: 2.75rem; }
.alert-dismissible .btn-close { padding: 0.9375rem; }

/* === 12. TABS === */
.nav-tabs { border-bottom: 1px solid var(--sf-border); gap: 0; }
.nav-tabs .nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--sf-slate-500);
  padding: 9px 15px;
  border: none;
  border-bottom: 2px solid transparent;
  border-radius: 0;
  margin-bottom: -1px;
  transition: color 0.15s, border-color 0.15s;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.nav-tabs .nav-link:hover { color: var(--sf-slate-800); background: transparent; border-color: transparent; }
.nav-tabs .nav-link.active { color: var(--sf-primary); border-bottom-color: var(--sf-primary); background: transparent; font-weight: 600; }
.tab-content { padding-top: 1.25rem; }

/* === 13. PROGRESS === */
.progress { background: var(--sf-slate-200); border-radius: var(--sf-radius-full); overflow: hidden; }
.progress-bar { transition: width 0.5s ease; border-radius: var(--sf-radius-full); }

/* === 14. MODAL === */
.modal-content { border: 1px solid var(--sf-border); border-radius: var(--sf-radius-lg); box-shadow: var(--sf-shadow-xl); }
.modal-header { padding: 1.125rem 1.375rem; border-bottom: 1px solid var(--sf-border-subtle); }
.modal-body { padding: 1.375rem; }
.modal-footer { padding: 0.875rem 1.375rem; border-top: 1px solid var(--sf-border-subtle); }
.modal-title { font-size: 1rem; font-weight: 600; color: var(--sf-slate-900); }

/* === 15. TABLE === */
.table { --bs-table-hover-bg: var(--sf-slate-50); font-size: 0.9rem; }
.table th { font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--sf-slate-500); padding: 10px 14px; border-bottom: 1px solid var(--sf-border); background: var(--sf-slate-50); }
.table td { padding: 12px 14px; border-bottom: 1px solid var(--sf-border-subtle); color: var(--sf-slate-700); vertical-align: middle; }
.table tbody tr:last-child td { border-bottom: none; }
.table tbody tr:hover td { background: var(--sf-slate-50); }

/* === 16. EMPTY STATE === */
.sf-empty { display: flex; flex-direction: column; align-items: center; text-align: center; padding: 3.5rem 2rem; }
.sf-empty-icon { width: 52px; height: 52px; border-radius: 14px; background: var(--sf-slate-100); display: flex; align-items: center; justify-content: center; font-size: 1.375rem; color: var(--sf-slate-400); margin-bottom: 1.125rem; }
.sf-empty-title { font-size: 1rem; font-weight: 600; color: var(--sf-slate-700); margin-bottom: 0.375rem; }
.sf-empty-desc { font-size: 0.875rem; color: var(--sf-slate-500); max-width: 300px; line-height: 1.55; margin-bottom: 1.375rem; }

/* === 17. HOMEWORK CARDS === */
.sf-hw-card {
  background: var(--sf-surface);
  border: 1px solid var(--sf-border);
  border-radius: var(--sf-radius-md);
  box-shadow: var(--sf-shadow-sm);
  padding: 1.125rem;
  display: flex;
  flex-direction: column;
  gap: 8px;
  height: 100%;
  transition: box-shadow 0.2s, transform 0.2s;
}
.sf-hw-card:hover { box-shadow: var(--sf-shadow-md); transform: translateY(-2px); }
.sf-hw-card.overdue { border-left: 3px solid var(--sf-danger); }
.sf-hw-card.completed { opacity: 0.65; }
.sf-subject-chip { display: inline-flex; align-items: center; padding: 2px 9px; border-radius: var(--sf-radius-full); font-size: 0.7rem; font-weight: 700; letter-spacing: 0.02em; text-transform: uppercase; background: var(--sf-primary-bg); color: var(--sf-primary); width: fit-content; }
.sf-hw-task { font-size: 0.9375rem; font-weight: 600; color: var(--sf-slate-800); line-height: 1.4; }
.sf-hw-due { font-size: 0.8125rem; color: var(--sf-slate-500); display: flex; align-items: center; gap: 4px; }
.sf-hw-due.overdue { color: var(--sf-danger); font-weight: 500; }
.sf-hw-due.soon { color: var(--sf-warning); font-weight: 500; }
.sf-hw-actions { display: flex; gap: 6px; margin-top: auto; padding-top: 4px; }

/* === 18. JOB / PLACEMENT CARDS === */
.sf-job-card {
  background: var(--sf-surface);
  border: 1px solid var(--sf-border);
  border-radius: var(--sf-radius-md);
  box-shadow: var(--sf-shadow-sm);
  padding: 1.375rem;
  display: flex;
  flex-direction: column;
  gap: 10px;
  height: 100%;
  transition: box-shadow 0.2s, border-color 0.2s, transform 0.2s;
}
.sf-job-card:hover { box-shadow: var(--sf-shadow-md); border-color: var(--sf-slate-300); transform: translateY(-2px); }
.sf-company-logo { width: 44px; height: 44px; border-radius: 10px; background: linear-gradient(135deg, var(--sf-primary-light), var(--sf-primary)); display: flex; align-items: center; justify-content: center; color: white; font-size: 1.125rem; font-weight: 700; flex-shrink: 0; }
.sf-job-title { font-size: 0.9375rem; font-weight: 600; color: var(--sf-slate-900); }
.sf-job-company { font-size: 0.875rem; font-weight: 500; color: var(--sf-slate-700); }
.sf-job-meta { font-size: 0.8125rem; color: var(--sf-slate-500); display: flex; align-items: center; gap: 4px; }
.sf-job-desc { font-size: 0.875rem; color: var(--sf-slate-600); line-height: 1.55; }

/* === 19. APPLICATION CARDS === */
.sf-app-card { background: var(--sf-surface); border: 1px solid var(--sf-border); border-radius: var(--sf-radius-md); box-shadow: var(--sf-shadow-sm); padding: 1.25rem 1.375rem; transition: box-shadow 0.2s; }
.sf-app-card:hover { box-shadow: var(--sf-shadow-md); }

/* === 20. REVISION CALENDAR === */
.sf-cal-wrapper { display: grid; grid-template-columns: repeat(7, 1fr); gap: 8px; }
.sf-cal-day { background: var(--sf-surface); border: 1px solid var(--sf-border); border-radius: var(--sf-radius); overflow: hidden; min-height: 150px; display: flex; flex-direction: column; }
.sf-cal-day-hdr { padding: 7px 8px; text-align: center; border-bottom: 1px solid var(--sf-border-subtle); background: var(--sf-slate-50); }
.sf-cal-day-hdr.today { background: var(--sf-primary); color: white; border-bottom-color: transparent; }
.sf-cal-day-hdr.today .sf-cal-dow,
.sf-cal-day-hdr.today .sf-cal-date,
.sf-cal-day-hdr.today .sf-cal-count { color: white; opacity: 1; }
.sf-cal-day-hdr.past { opacity: 0.6; }
.sf-cal-dow { font-size: 0.62rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.07em; color: var(--sf-slate-500); display: block; }
.sf-cal-date { font-size: 1.0625rem; font-weight: 700; letter-spacing: -0.02em; display: block; line-height: 1.2; }
.sf-cal-count { font-size: 0.6rem; color: var(--sf-slate-400); display: block; }
.sf-cal-sessions { padding: 5px; display: flex; flex-direction: column; gap: 3px; flex: 1; }
.sf-session-block { padding: 5px 7px; border-radius: 5px; font-size: 0.68rem; line-height: 1.3; }
.sf-session-block .sf-sess-subj { font-weight: 700; display: block; }
.sf-session-block .sf-sess-type { opacity: 0.8; display: block; }
.sf-session-block .sf-sess-time { opacity: 0.7; font-size: 0.62rem; display: block; }
.sf-session-block.done { opacity: 0.45; }
.sf-session-block.skipped { opacity: 0.35; text-decoration: line-through; }
.sf-subj-0 { background: #eff6ff; color: #1e40af; border-left: 2.5px solid #3b82f6; }
.sf-subj-1 { background: #f0fdf4; color: #166534; border-left: 2.5px solid #22c55e; }
.sf-subj-2 { background: #fef3c7; color: #92400e; border-left: 2.5px solid #f59e0b; }
.sf-subj-3 { background: #fdf2f8; color: #9d174d; border-left: 2.5px solid #ec4899; }
.sf-subj-4 { background: #f5f3ff; color: #4c1d95; border-left: 2.5px solid #8b5cf6; }
.sf-subj-5 { background: #fff1f2; color: #9f1239; border-left: 2.5px solid #f43f5e; }

/* === 21. FILTER CHIPS === */
.sf-chips { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.sf-chip { display: inline-flex; align-items: center; gap: 5px; padding: 5px 13px; border-radius: var(--sf-radius-full); font-size: 0.8125rem; font-weight: 500; border: 1px solid var(--sf-border); background: var(--sf-surface); color: var(--sf-slate-600); cursor: pointer; transition: all 0.15s; text-decoration: none; white-space: nowrap; }
.sf-chip:hover { border-color: var(--sf-slate-300); background: var(--sf-slate-50); color: var(--sf-slate-900); }
.sf-chip.active { border-color: var(--sf-primary); background: var(--sf-primary-bg); color: var(--sf-primary); }

/* === 22. MISC COMPONENTS === */
.sf-section-label { font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.07em; color: var(--sf-slate-400); margin-bottom: 0.75rem; }
hr, .sf-divider { border: none; border-top: 1px solid var(--sf-border); margin: 1.25rem 0; }
.sf-search-wrap { position: relative; }
.sf-search-icon { position: absolute; left: 11px; top: 50%; transform: translateY(-50%); color: var(--sf-slate-400); pointer-events: none; font-size: 0.875rem; z-index: 2; }
.sf-search-input { padding-left: 34px !important; }

/* === 23. ROLE OPTION (REGISTER) === */
.sf-role-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 6px; }
.sf-role-option { position: relative; border: 1.5px solid var(--sf-border); border-radius: var(--sf-radius); padding: 14px; cursor: pointer; transition: border-color 0.15s, background 0.15s, box-shadow 0.15s; background: var(--sf-surface); display: block; }
.sf-role-option:hover { border-color: var(--sf-slate-400); }
.sf-role-option input[type="radio"] { position: absolute; opacity: 0; width: 0; height: 0; }
.sf-role-option:has(input:checked) { border-color: var(--sf-primary); background: var(--sf-primary-bg); box-shadow: 0 0 0 3px rgba(37,99,235,0.1); }
.sf-role-title { font-weight: 700; font-size: 0.9rem; color: var(--sf-slate-800); margin-bottom: 4px; display: flex; align-items: center; gap: 7px; }
.sf-role-desc { font-size: 0.8125rem; color: var(--sf-slate-500); line-height: 1.4; }

/* === 24. AUTH PAGES === */
.sf-auth-page { min-height: calc(100vh - var(--sf-nav-height)); background: var(--sf-slate-50); display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 2.5rem 1rem; }
.sf-auth-card { background: white; border: 1px solid var(--sf-border); border-radius: var(--sf-radius-xl); box-shadow: var(--sf-shadow-lg); padding: 2.5rem; width: 100%; max-width: 440px; }
.sf-auth-wide { max-width: 520px; }
.sf-auth-logo { display: flex; align-items: center; gap: 8px; font-size: 1.25rem; font-weight: 700; color: var(--sf-slate-900); letter-spacing: -0.03em; text-decoration: none; margin-bottom: 2rem; justify-content: center; }
.sf-auth-title { font-size: 1.375rem; font-weight: 700; color: var(--sf-slate-900); margin-bottom: 0.375rem; letter-spacing: -0.02em; }
.sf-auth-subtitle { font-size: 0.875rem; color: var(--sf-slate-500); margin-bottom: 1.75rem; }

/* === 25. STEP WIZARD === */
.sf-step-card { background: var(--sf-surface); border: 1px solid var(--sf-border); border-radius: var(--sf-radius-md); box-shadow: var(--sf-shadow-sm); padding: 1.25rem 1.375rem; display: flex; align-items: center; gap: 1rem; }
.sf-step-card.done { border-left: 3px solid var(--sf-success); }
.sf-step-num { width: 36px; height: 36px; border-radius: 50%; border: 2px solid var(--sf-border); background: var(--sf-slate-100); display: flex; align-items: center; justify-content: center; font-size: 0.875rem; font-weight: 700; color: var(--sf-slate-500); flex-shrink: 0; }
.sf-step-num.done { border-color: var(--sf-success); background: var(--sf-success-bg); color: var(--sf-success); }
.sf-step-num.active { border-color: var(--sf-primary); background: var(--sf-primary-bg); color: var(--sf-primary); }

/* === 26. QUICK ACTIONS === */
.sf-quick-action { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px; padding: 1.125rem 0.75rem; border: 1px solid var(--sf-border); border-radius: var(--sf-radius-md); background: var(--sf-surface); text-decoration: none; transition: all 0.2s; text-align: center; }
.sf-quick-action:hover { border-color: var(--sf-primary-border); background: var(--sf-primary-bg); transform: translateY(-2px); box-shadow: var(--sf-shadow-sm); }
.sf-quick-action i { font-size: 1.25rem; color: var(--sf-primary); }
.sf-quick-action span { font-size: 0.8125rem; font-weight: 500; color: var(--sf-slate-700); }

/* === 27. FOOTER === */
.sf-footer { border-top: 1px solid var(--sf-border); background: white; padding: 1rem 0; }
.sf-footer-inner { max-width: 1280px; margin: 0 auto; padding: 0 1.5rem; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 0.5rem; }
.sf-footer-text { font-size: 0.8125rem; color: var(--sf-slate-400); }
.sf-footer-link { font-size: 0.8125rem; color: var(--sf-slate-400); text-decoration: none; transition: color 0.15s; }
.sf-footer-link:hover { color: var(--sf-slate-600); }
.sf-footer-links { display: flex; align-items: center; gap: 1.25rem; }

/* === 28. UTILITIES === */
.text-primary { color: var(--sf-primary) !important; }
.text-success { color: var(--sf-success) !important; }
.text-warning { color: var(--sf-warning) !important; }
.text-danger { color: var(--sf-danger) !important; }
.text-info { color: #0284c7 !important; }
.sf-truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
:focus-visible { outline: 2px solid var(--sf-primary); outline-offset: 2px; }
button:focus:not(:focus-visible), a:focus:not(:focus-visible) { outline: none; }
.sf-hover-lift { transition: transform 0.2s ease, box-shadow 0.2s ease; }
.sf-hover-lift:hover { transform: translateY(-2px); box-shadow: var(--sf-shadow-md); }

/* === 29. ANIMATIONS === */
@keyframes sf-fade-up { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
@keyframes sf-fade-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes sf-slide-down { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: translateY(0); } }
.sf-fade-up { animation: sf-fade-up 0.3s ease both; }
.sf-fade-in { animation: sf-fade-in 0.25s ease both; }
.sf-stagger > *:nth-child(1) { animation-delay: 0ms; }
.sf-stagger > *:nth-child(2) { animation-delay: 50ms; }
.sf-stagger > *:nth-child(3) { animation-delay: 100ms; }
.sf-stagger > *:nth-child(4) { animation-delay: 150ms; }
.sf-stagger > *:nth-child(5) { animation-delay: 200ms; }
.sf-stagger > *:nth-child(6) { animation-delay: 250ms; }

/* === 30. RESPONSIVE === */
@media (max-width: 991px) {
  .sf-cal-wrapper { grid-template-columns: repeat(4, 1fr); }
}
@media (max-width: 768px) {
  .sf-nav-links { display: none; }
  .sf-nav-burger { display: flex; }
  .sf-page { padding: 1.375rem 1rem; }
  .sf-page-sm { padding: 1.375rem 1rem; }
  .sf-auth-card { padding: 1.875rem 1.5rem; }
  .sf-role-grid { grid-template-columns: 1fr; }
  .sf-cal-wrapper { grid-template-columns: repeat(3, 1fr); }
  h1, .h1 { font-size: 1.375rem; }
  .sf-stat-value { font-size: 1.625rem; }
}
@media (max-width: 576px) {
  .sf-page { padding: 1rem 0.875rem; }
  .card-body { padding: 1rem; }
  .sf-auth-card { padding: 1.5rem 1.25rem; border-radius: var(--sf-radius-lg); }
  .sf-cal-wrapper { grid-template-columns: repeat(2, 1fr); }
}

/* === 31. MOBILE-FIRST TOUCH TARGETS & USABILITY === */

/* 44px minimum tap targets on all interactive elements */
.btn { min-height: 44px; display: inline-flex; align-items: center; justify-content: center; }
.btn-sm { min-height: 36px; }
.btn-lg { min-height: 52px; }
.form-control, .form-select { min-height: 44px; }
.form-control-sm, .form-select-sm { min-height: 36px; }

/* Full-width button helper for key CTAs on mobile */
.sf-btn-mobile { }
@media (max-width: 575px) {
  .sf-btn-mobile { width: 100%; }
}

/* No horizontal scrolling anywhere */
html, body { overflow-x: hidden; max-width: 100vw; }

/* Prevent cards from overflowing on narrow screens */
.sf-card, .sf-hw-card, .sf-job-card, .sf-app-card { min-width: 0; }
.min-w-0 { min-width: 0; }

/* Mobile nav links: comfortably tappable */
.sf-mobile-nav .sf-nav-link {
  min-height: 48px;
  padding: 12px 16px;
  font-size: 0.9375rem;
  border-radius: var(--sf-radius);
}

/* Form improvements for mobile: single column at small sizes */
@media (max-width: 575px) {
  .row.g-3 > [class*="col-"]:not([class*="col-sm"]):not([class*="col-md"]):not([class*="col-lg"]):not([class*="col-xl"]) {
    /* Already handled by Bootstrap col-12 */
  }

  /* Stack button rows vertically */
  .d-flex.gap-2.flex-wrap .btn {
    flex: 1 1 auto;
    min-width: 120px;
  }

  /* Larger text inputs */
  .form-control, .form-select { font-size: 1rem; }

  /* Tighter page subtitle */
  .sf-page-subtitle { font-size: 0.875rem; }
}

/* Sticky submit button on apply/form pages */
.sf-sticky-submit {
  position: sticky;
  bottom: 0;
  background: white;
  border-top: 1px solid var(--sf-border);
  padding: 0.875rem 1rem;
  margin: 0 -1rem -1rem;
  z-index: 100;
}

/* Placement card touch hover improvements */
@media (hover: none) {
  .sf-card:active { box-shadow: var(--sf-shadow-md); }
  .sf-hw-card:active { box-shadow: var(--sf-shadow-md); transform: none; }
  .sf-job-card:active { box-shadow: var(--sf-shadow-md); transform: none; }
  .sf-quick-action:active { background: var(--sf-primary-bg); border-color: var(--sf-primary-border); transform: none; }
}

/* Conversation list rows: comfortable tap height */
.sf-conv-row {
  min-height: 72px;
  display: flex;
  align-items: center;
}

/* Date separators in chat */
.sf-date-sep {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin: 1rem 0 0.5rem;
  color: var(--sf-slate-400);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.sf-date-sep::before,
.sf-date-sep::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--sf-border);
}

/* Chat message rows */
.sf-msg-row {
  margin-bottom: 0.5rem;
}

/* ─── CV Viewer (PDF.js canvas-based) ───────────────────────────────────── */

.sf-cv-page {
  display: flex;
  flex-direction: column;
  height: calc(100vh - 60px); /* subtract nav height */
  overflow: hidden;
  background: #404040;
}

/* ── Toolbar ── */
.sf-cv-toolbar {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0 1rem;
  height: 52px;
  background: var(--sf-white, #fff);
  border-bottom: 1px solid var(--sf-border);
  flex-shrink: 0;
  box-shadow: 0 1px 4px rgba(0,0,0,.06);
}

.sf-cv-back {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--sf-slate-600);
  text-decoration: none;
  padding: 0.375rem 0.625rem;
  border-radius: 6px;
  flex-shrink: 0;
  transition: background 0.12s, color 0.12s;
  white-space: nowrap;
}
.sf-cv-back:hover { background: var(--sf-slate-100); color: var(--sf-slate-900); }

.sf-cv-meta {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}
.sf-cv-name {
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--sf-slate-900);
}

/* ── PDF navigation controls ── */
.sf-cv-controls {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex-shrink: 0;
  background: var(--sf-slate-50);
  border: 1px solid var(--sf-border);
  border-radius: 8px;
  padding: 0.25rem 0.5rem;
}

.sf-cv-ctrl-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  padding: 0;
  background: none;
  border: none;
  border-radius: 5px;
  color: var(--sf-slate-600);
  font-size: 0.875rem;
  cursor: pointer;
  transition: background 0.12s, color 0.12s;
  flex-shrink: 0;
}
.sf-cv-ctrl-btn:hover:not(:disabled) { background: var(--sf-slate-200); color: var(--sf-slate-900); }
.sf-cv-ctrl-btn:disabled { opacity: 0.35; cursor: default; }
.sf-cv-ctrl-fit { min-width: 30px; width: auto; padding: 0 6px; }

.sf-cv-pageinfo {
  font-size: 0.8125rem;
  color: var(--sf-slate-600);
  white-space: nowrap;
  padding: 0 4px;
  min-width: 52px;
  text-align: center;
}

.sf-cv-zoom-label {
  font-size: 0.8125rem;
  color: var(--sf-slate-600);
  min-width: 40px;
  text-align: center;
}

.sf-cv-sep {
  width: 1px;
  height: 20px;
  background: var(--sf-border);
  margin: 0 2px;
  flex-shrink: 0;
}

.sf-cv-actions { flex-shrink: 0; }

/* ── Viewer body (scrollable area) ── */
.sf-cv-viewer-body {
  flex: 1;
  overflow-y: auto;
  overflow-x: auto;
  background: #404040;
  padding: 24px 0;
  scroll-behavior: smooth;
}

/* ── Loading / error states ── */
.sf-cv-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--sf-slate-400);
}

/* ── Pages ── */
.sf-cv-pages {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  padding-bottom: 24px;
}

.sf-cv-page-wrapper {
  background: #fff;
  box-shadow: 0 4px 20px rgba(0,0,0,.35);
  margin-bottom: 20px;
  border-radius: 2px;
  overflow: hidden;
  /* remove any inline-block space */
  display: block;
  line-height: 0;
}
.sf-cv-page-wrapper canvas { display: block; }

.sf-cv-page-label {
  font-size: 0.75rem;
  color: rgba(255,255,255,.5);
  text-align: center;
  line-height: 1;
  padding: 6px 0 0;
  background: transparent;
  letter-spacing: 0.04em;
}

/* ── Mobile ── */
@@media (max-width: 767px) {
  .sf-cv-toolbar {
    height: auto;
    min-height: 52px;
    padding: 0.5rem 0.75rem;
    flex-wrap: wrap;
    row-gap: 0.375rem;
  }
  .sf-cv-meta { order: 3; min-width: 100%; }
  .sf-cv-controls { order: 2; }
  .sf-cv-actions { order: 1; margin-left: auto; }
  .sf-cv-page { height: calc(100vh - 60px); }
  .sf-cv-viewer-body { padding: 12px 0; }
  .sf-cv-page-wrapper { margin-bottom: 12px; }
}

/* Notification bell button */
.sf-notif-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  text-decoration: none;
  transition: background 0.15s;
  margin-right: 0.25rem;
}
.sf-notif-btn:hover {
  background: var(--sf-slate-100);
}

/* ── Company Profile ──────────────────────────────────────────────────────── */

/* Section number badge */
.sf-section-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 50%;
  background: var(--sf-primary);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  margin-right: 0.5rem;
  flex-shrink: 0;
}

/* Completion hint chips */
.sf-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.25em 0.6em;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 500;
}
.sf-chip-warn {
  background: #fef3c7;
  color: #92400e;
}
.sf-chip-ok {
  background: var(--sf-success-bg);
  color: var(--sf-success-text);
}

/* Sidebar section links */
.sf-sidebar-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.5rem;
  border-radius: 6px;
  font-size: 0.875rem;
  color: var(--sf-slate-700);
  text-decoration: none;
  transition: background 0.12s, color 0.12s;
}
.sf-sidebar-link:hover {
  background: var(--sf-slate-100);
  color: var(--sf-primary);
}

/* Social icon links (public profile) */
.sf-social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 6px;
  font-size: 1.125rem;
  text-decoration: none;
  transition: background 0.12s, opacity 0.12s;
  opacity: 0.85;
}
.sf-social-link:hover {
  background: var(--sf-slate-100);
  opacity: 1;
}

/* Hoverable placement card on public profile */
.sf-card-hover {
  transition: box-shadow 0.15s, transform 0.15s;
  cursor: pointer;
}
.sf-card-hover:hover {
  box-shadow: 0 4px 20px rgba(37,99,235,.12);
  transform: translateY(-1px);
}

/* ================================================================
   PLACELY ANIMATION & POLISH SYSTEM
   ================================================================ */

/* ── Easing variables ────────────────────────────────────────── */
:root {
  --sf-spring:   cubic-bezier(0.34, 1.56, 0.64, 1);
  --sf-ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --sf-ease-in-out: cubic-bezier(0.45, 0, 0.55, 1);
}

/* ── Toast Notification System ───────────────────────────────── */

#sfToastContainer {
  position: fixed;
  bottom: 1.5rem;
  right: 104px;
  z-index: 1080;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  pointer-events: none;
}

.sf-toast {
  display: flex;
  align-items: flex-start;
  gap: 0.625rem;
  padding: 0.75rem 0.875rem;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0,0,0,.16), 0 2px 8px rgba(0,0,0,.08);
  border-left: 4px solid;
  min-width: 290px;
  max-width: 370px;
  pointer-events: auto;
  position: relative;
  overflow: hidden;
  opacity: 0;
  transform: translateX(56px) scale(0.92);
}
@keyframes sf-toast-enter {
  0%   { opacity: 0; transform: translateX(56px) scale(0.88); }
  60%  { opacity: 1; transform: translateX(-7px) scale(1.02); }
  80%  { transform: translateX(4px) scale(0.99); }
  100% { opacity: 1; transform: translateX(0) scale(1); }
}
@keyframes sf-toast-exit {
  from { opacity: 1; transform: translateX(0) scale(1); }
  to   { opacity: 0; transform: translateX(40px) scale(0.9); }
}
.sf-toast-in  { animation: sf-toast-enter 0.5s cubic-bezier(0.22, 1, 0.36, 1) forwards; }
.sf-toast-out { animation: sf-toast-exit  0.3s cubic-bezier(0.45, 0, 0.55, 1) forwards; }

.sf-toast-success { border-left-color: var(--sf-success); }
.sf-toast-error   { border-left-color: var(--sf-danger); }
.sf-toast-warning { border-left-color: var(--sf-warning); }
.sf-toast-info    { border-left-color: var(--sf-primary); }

.sf-toast-icon {
  font-size: 1.1rem;
  line-height: 1.5;
  flex-shrink: 0;
}
.sf-toast-success .sf-toast-icon { color: var(--sf-success); }
.sf-toast-error   .sf-toast-icon { color: var(--sf-danger); }
.sf-toast-warning .sf-toast-icon { color: var(--sf-warning); }
.sf-toast-info    .sf-toast-icon { color: var(--sf-primary); }

.sf-toast-text {
  font-size: 0.875rem;
  line-height: 1.5;
  flex: 1;
  color: var(--sf-slate-900);
  font-weight: 500;
}

.sf-toast-close {
  background: none;
  border: none;
  padding: 0.125rem;
  color: var(--sf-slate-400);
  cursor: pointer;
  font-size: 0.75rem;
  line-height: 1;
  flex-shrink: 0;
  border-radius: 4px;
  transition: color 0.15s, background 0.15s;
}
.sf-toast-close:hover {
  color: var(--sf-slate-700);
  background: var(--sf-slate-100);
}

.sf-toast-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 3px;
  width: 100%;
  opacity: 0.3;
  animation: sf-toast-shrink linear forwards;
  transform-origin: left;
}
.sf-toast-success .sf-toast-bar { background: var(--sf-success); }
.sf-toast-error   .sf-toast-bar { background: var(--sf-danger); }
.sf-toast-warning .sf-toast-bar { background: var(--sf-warning); }
.sf-toast-info    .sf-toast-bar { background: var(--sf-primary); }

@keyframes sf-toast-shrink {
  from { transform: scaleX(1); }
  to   { transform: scaleX(0); }
}

/* ── Scout Widget ─────────────────────────────────────────────── */

.scout-widget {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.625rem;
  opacity: 0;
  transform: translateY(24px) scale(0.9);
  transition: opacity 0.45s cubic-bezier(0.22, 1, 0.36, 1), transform 0.45s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.scout-widget.scout-show {
  opacity: 1;
  transform: translateY(0) scale(1);
}
.scout-widget.scout-hide {
  opacity: 0;
  transform: translateY(20px) scale(0.88);
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
}

@keyframes scout-bubble-pop {
  0%   { transform: scale(0.6) translateY(8px); opacity: 0; }
  60%  { transform: scale(1.04) translateY(-2px); opacity: 1; }
  80%  { transform: scale(0.98); }
  100% { transform: scale(1) translateY(0); opacity: 1; }
}

.scout-bubble {
  background: #fff;
  border-radius: 14px 14px 4px 14px;
  box-shadow: 0 8px 28px rgba(0,0,0,.14), 0 2px 8px rgba(0,0,0,.06);
  padding: 0.875rem 2.25rem 0.875rem 1rem;
  max-width: 230px;
  position: relative;
  transform-origin: bottom right;
  animation: scout-bubble-pop 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}
.scout-bubble p {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--sf-slate-700);
}

/* Typing cursor when Scout is "thinking" */
.scout-typing::after {
  content: '▌';
  opacity: 0;
  animation: sf-cursor-blink 0.75s step-end infinite;
}
@keyframes sf-cursor-blink {
  0%,100% { opacity: 0; }
  50%     { opacity: 1; }
}

.scout-dismiss {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  background: none;
  border: none;
  padding: 0.125rem;
  font-size: 0.75rem;
  color: var(--sf-slate-400);
  cursor: pointer;
  line-height: 1;
  border-radius: 4px;
  transition: color 0.12s, background 0.12s;
}
.scout-dismiss:hover {
  color: var(--sf-slate-700);
  background: var(--sf-slate-100);
}

.scout-avatar-btn {
  width: 62px;
  height: 62px;
  border-radius: 50%;
  border: 3px solid #fff;
  box-shadow: 0 4px 16px rgba(37,99,235,.28), 0 1px 4px rgba(0,0,0,.12);
  overflow: hidden;
  background: var(--sf-primary);
  padding: 0;
  cursor: pointer;
  transition: transform 0.3s var(--sf-spring), box-shadow 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}
.scout-avatar-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 8px 24px rgba(37,99,235,.38), 0 2px 6px rgba(0,0,0,.12);
}
.scout-avatar-btn:active {
  transform: scale(0.95);
}

.scout-mini .scout-bubble { display: none; }

@keyframes scout-celebrate {
  0%   { transform: translateY(0) rotate(0deg) scale(1); }
  15%  { transform: translateY(-10px) rotate(-5deg) scale(1.05); }
  35%  { transform: translateY(-14px) rotate(5deg) scale(1.08); }
  55%  { transform: translateY(-8px) rotate(-3deg) scale(1.04); }
  75%  { transform: translateY(-4px) rotate(2deg) scale(1.02); }
  100% { transform: translateY(0) rotate(0deg) scale(1); }
}
.scout-celebrate { animation: scout-celebrate 0.7s var(--sf-ease-out); }

/* ── Card hover (spring) ──────────────────────────────────────── */

.sf-card-hover {
  transition: box-shadow 0.3s var(--sf-spring), transform 0.3s var(--sf-spring);
  cursor: pointer;
}
.sf-card-hover:hover {
  box-shadow: 0 12px 36px rgba(37,99,235,.14), 0 4px 12px rgba(0,0,0,.06);
  transform: translateY(-5px) scale(1.01);
}
.sf-card-hover:active {
  transform: translateY(-2px) scale(0.99);
  transition-duration: 0.1s;
}

/* ── Button interactions ──────────────────────────────────────── */

.btn {
  transition: transform 0.25s var(--sf-spring), box-shadow 0.2s ease, background-color 0.15s ease, color 0.15s ease;
}
.btn:active:not(:disabled) {
  transform: scale(0.94);
  transition-duration: 0.1s;
}
.btn:not(:active):not(:disabled) {
  transition: transform 0.35s var(--sf-spring), box-shadow 0.25s ease, background-color 0.15s ease, color 0.15s ease;
}

/* ── Button Ripple ────────────────────────────────────────────── */

.sf-ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255,255,255,0.3);
  pointer-events: none;
  animation: sf-ripple-expand 0.55s var(--sf-ease-out) forwards;
}
.btn-outline-primary .sf-ripple,
.btn-outline-secondary .sf-ripple,
.btn-light .sf-ripple {
  background: rgba(37,99,235,0.11);
}
@keyframes sf-ripple-expand {
  from { transform: scale(0); opacity: 0.8; }
  to   { transform: scale(1); opacity: 0; }
}

/* ── Confetti ──────────────────────────────────────────────────── */

@keyframes sf-confetti-drop {
  0%   { opacity: 1; transform: translateY(0) translateX(0) rotate(0deg); }
  100% {
    opacity: 0;
    transform: translateY(110vh) translateX(var(--d, 0px)) rotate(var(--r, 360deg));
  }
}

/* ── Page load entrance ───────────────────────────────────────── */

@keyframes sf-page-enter {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}
main[role="main"] {
  animation: sf-page-enter 0.4s var(--sf-ease-out) both;
}

/* ── Scroll-reveal stagger (spring easing) ────────────────────── */

.sf-anim-pending {
  opacity: 0;
  transform: translateY(18px) scale(0.97);
  transition: opacity 0.5s ease, transform 0.55s var(--sf-spring);
}
.sf-anim-pending:nth-child(1)   { transition-delay: 0ms; }
.sf-anim-pending:nth-child(2)   { transition-delay: 55ms; }
.sf-anim-pending:nth-child(3)   { transition-delay: 110ms; }
.sf-anim-pending:nth-child(4)   { transition-delay: 165ms; }
.sf-anim-pending:nth-child(5)   { transition-delay: 220ms; }
.sf-anim-pending:nth-child(6)   { transition-delay: 275ms; }
.sf-anim-pending:nth-child(n+7) { transition-delay: 330ms; }
.sf-anim-in { opacity: 1; transform: translateY(0) scale(1); }

/* ── Skeleton loaders ─────────────────────────────────────────── */

.sf-skeleton {
  display: block;
  background: linear-gradient(90deg, var(--sf-slate-100) 25%, var(--sf-slate-200) 50%, var(--sf-slate-100) 75%);
  background-size: 200% 100%;
  animation: sf-skeleton-wave 1.6s linear infinite;
  border-radius: 6px;
}
.sf-skeleton-text   { height: 0.875rem; margin-bottom: 0.375rem; }
.sf-skeleton-circle { border-radius: 50%; }
@keyframes sf-skeleton-wave {
  from { background-position: 200% 0; }
  to   { background-position: -200% 0; }
}

/* ── Input focus enhancement ──────────────────────────────────── */

.form-control, .form-select {
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.form-control:focus, .form-select:focus {
  border-color: var(--sf-primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,.14), inset 0 1px 3px rgba(0,0,0,.04);
}

/* ── Focus visible ────────────────────────────────────────────── */

:focus-visible {
  outline: 2.5px solid var(--sf-primary);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ── Pulse (notification dots, live indicators) ───────────────── */

@keyframes sf-pulse {
  0%,100% { transform: scale(1); opacity: 1; }
  50%     { transform: scale(1.18); opacity: 0.7; }
}
.sf-pulse { animation: sf-pulse 2s ease-in-out infinite; }

/* ── Bounce utility ───────────────────────────────────────────── */

@keyframes sf-bounce {
  0%,100% { transform: translateY(0); }
  30%     { transform: translateY(-10px); animation-timing-function: var(--sf-ease-out); }
  60%     { transform: translateY(-4px); }
}
.sf-bounce { animation: sf-bounce 0.6s var(--sf-spring); }

/* ── Bookmark pulse ───────────────────────────────────────────── */

@keyframes sf-bookmark-pulse {
  0%   { transform: scale(1); }
  35%  { transform: scale(1.4); }
  65%  { transform: scale(0.88); }
  85%  { transform: scale(1.08); }
  100% { transform: scale(1); }
}
.sf-bookmark-pulse { animation: sf-bookmark-pulse 0.45s var(--sf-spring); }

/* ── Number counter flash (for stat updates) ──────────────────── */

@keyframes sf-count-flash {
  0%   { transform: scale(1);    color: inherit; }
  30%  { transform: scale(1.18); color: var(--sf-primary); }
  100% { transform: scale(1);    color: inherit; }
}
.sf-count-flash { animation: sf-count-flash 0.4s var(--sf-spring); }

/* ── Reduced motion overrides ─────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .sf-toast     { opacity: 1 !important; transform: none !important; }
  .scout-widget { opacity: 1 !important; transform: none !important; }
  .scout-bubble { animation: none !important; }
  .sf-anim-pending { opacity: 1 !important; transform: none !important; }
  main[role="main"] { animation: none !important; }
}