/* ─── Fonts ─────────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@400;500;600;700;800&family=Inter:wght@400;500;600&display=swap');

/* ─── Design Tokens ─────────────────────────────────────── */
:root {
  /* Surfaces */
  --surface:              #f8f9ff;
  --surface-low:          #eff4ff;
  --surface-high:         #dce9ff;
  --surface-card:         #ffffff;

  /* Primary */
  --primary:              #3c6091;
  --primary-dim:          #2a4a73;
  --primary-container:    #9fc3fa;
  --on-primary:           #ffffff;
  --on-primary-container: #004880;

  /* Secondary */
  --secondary-container:     #91f8b8;
  --on-secondary-container:  #005e37;

  /* Tertiary / Warning */
  --tertiary:             #7e5800;
  --tertiary-container:   #ffdea4;

  /* Text */
  --on-surface:           #0c3459;
  --on-surface-variant:   #406189;

  /* Error */
  --error:                #ba1a1a;
  --error-container:      #ffdad6;
  --on-error-container:   #410002;

  /* Sidebar */
  --sidebar-width:        240px;

  /* Radii */
  --radius-sm:   0.375rem;
  --radius-md:   0.75rem;
  --radius-lg:   1rem;
  --radius-xl:   1.5rem;

  /* Transitions */
  --transition:  150ms ease-in-out;
}

/* ─── Reset ──────────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--surface);
  color: var(--on-surface);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ─── Sidebar ────────────────────────────────────────────── */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--surface-high);
  display: flex;
  flex-direction: column;
  z-index: 50;
}

.sidebar-brand {
  padding: 28px 20px 20px;
  font-family: 'Manrope', sans-serif;
  font-weight: 800;
  font-size: 1rem;
  color: var(--primary);
  letter-spacing: -0.02em;
}

.sidebar-links {
  flex: 1;
  padding: 8px 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  overflow-y: auto;
}

.sidebar-links a {
  display: block;
  padding: 9px 12px;
  border-radius: var(--radius-md);
  color: var(--on-surface-variant);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: background var(--transition), color var(--transition);
}

.sidebar-links a:hover {
  background: var(--surface-low);
  color: var(--on-surface);
  text-decoration: none;
}

.sidebar-links a.active {
  background: var(--primary-container);
  color: var(--primary-dim);
  font-weight: 600;
}

.sidebar-footer {
  padding: 16px 16px 28px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.sidebar-user {
  font-size: 0.75rem;
  color: var(--on-surface-variant);
  line-height: 1.5;
  padding: 0 4px 6px;
}

.btn-sign-out {
  width: 100%;
  padding: 9px 12px;
  background: transparent;
  color: var(--on-surface-variant);
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  font-family: 'Inter', sans-serif;
  cursor: pointer;
  text-align: left;
  transition: background var(--transition), color var(--transition);
}

.btn-sign-out:hover {
  background: rgba(12, 52, 89, 0.06);
  color: var(--on-surface);
}

/* ─── Page layout ────────────────────────────────────────── */
.page {
  margin-left: var(--sidebar-width);
  padding: 48px;
  min-height: 100vh;
}

/* ─── Auth container (no sidebar) ───────────────────────── */
.container {
  max-width: 440px;
  margin: 80px auto;
  background: var(--surface-card);
  padding: 48px;
  border-radius: var(--radius-xl);
  box-shadow: 0 8px 32px rgba(120, 120, 120, 0.2);
}

/* ─── Typography ─────────────────────────────────────────── */
h1, h2, h3, h4 {
  font-family: 'Manrope', sans-serif;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--on-surface);
}

h1 { font-size: 1.75rem; margin-bottom: 8px; }
h2 { font-size: 1.35rem; margin-bottom: 24px; }
h3 { font-size: 1.05rem; margin-bottom: 12px; }
h4 { font-size: 0.95rem; }

.subtitle {
  color: var(--on-surface-variant);
  margin-bottom: 32px;
  font-size: 0.9rem;
}

/* ─── Form elements ──────────────────────────────────────── */
.form-group {
  margin-bottom: 20px;
}

label {
  display: block;
  font-weight: 600;
  font-size: 0.75rem;
  color: var(--on-surface-variant);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

input[type="text"],
input[type="email"],
input[type="password"],
select {
  width: 100%;
  padding: 10px 14px;
  background: var(--surface-low);
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-family: 'Inter', sans-serif;
  color: var(--on-surface);
  transition: background var(--transition), box-shadow var(--transition);
  appearance: none;
  -webkit-appearance: none;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
select:focus {
  outline: none;
  background: var(--surface-card);
  box-shadow: 0 0 0 2px var(--primary-container);
}

input[type="text"]::placeholder,
input[type="email"]::placeholder,
input[type="password"]::placeholder {
  color: var(--on-surface-variant);
  opacity: 0.6;
}

textarea {
  width: 100%;
  padding: 10px 14px;
  background: var(--surface-low);
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-family: 'Inter', sans-serif;
  color: var(--on-surface);
  transition: background var(--transition), box-shadow var(--transition);
  resize: vertical;
  line-height: 1.6;
}

textarea:focus {
  outline: none;
  background: var(--surface-card);
  box-shadow: 0 0 0 2px var(--primary-container);
}

textarea::placeholder {
  color: var(--on-surface-variant);
  opacity: 0.6;
}

input[type="radio"],
input[type="checkbox"] {
  width: auto;
  margin: 0;
  cursor: pointer;
  accent-color: var(--primary);
}

input[type="radio"] {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

/* ─── Buttons ────────────────────────────────────────────── */
.btn {
  width: 100%;
  padding: 11px 20px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dim));
  color: var(--on-primary);
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  font-family: 'Inter', sans-serif;
  cursor: pointer;
  margin-top: 8px;
  transition: opacity var(--transition), transform var(--transition);
  letter-spacing: 0.01em;
}

.btn:hover {
  opacity: 0.88;
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
  opacity: 1;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.btn-secondary {
  background: var(--surface-high);
  color: var(--on-surface-variant);
  font-weight: 500;
}

.btn-secondary:hover {
  background: var(--primary-container);
  color: var(--primary-dim);
  opacity: 1;
  transform: none;
}

/* ─── Cards ──────────────────────────────────────────────── */
.card {
  background: var(--surface-card);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: 0 8px 32px rgba(12, 52, 89, 0.04);
  margin-bottom: 16px;
}

/* ─── Tables ─────────────────────────────────────────────── */
table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(12, 52, 89, 0.04);
}

th, td {
  padding: 13px 20px;
  text-align: left;
}

th {
  background: var(--surface-card);
  font-weight: 600;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--on-surface-variant);
  border-bottom: 1px solid rgba(64, 97, 137, 0.12);
  cursor: default;
}

td {
  font-size: 0.875rem;
  color: var(--on-surface);
  border-bottom: none;
}

tbody tr:hover td {
  background: var(--surface-low);
}

tbody tr:last-child td {
  border-bottom: none;
}

/* ─── Utility ────────────────────────────────────────────── */
.hidden {
  display: none;
}

.error {
  color: var(--error);
  margin-top: 8px;
  font-size: 0.85rem;
}

/* ─── Score / status chips ───────────────────────────────── */
.chip {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 99px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.chip-success {
  background: var(--secondary-container);
  color: var(--on-secondary-container);
}

.chip-warning {
  background: var(--tertiary-container);
  color: var(--tertiary);
}

.chip-error {
  background: var(--error-container);
  color: var(--on-error-container);
}

/* ─── Mobile nav ─────────────────────────────────────────── */
#nav-toggle {
  display: none;
  position: fixed;
  top: 14px;
  left: 14px;
  z-index: 200;
  background: var(--surface-card);
  border: none;
  border-radius: var(--radius-md);
  padding: 10px 12px;
  cursor: pointer;
  box-shadow: 0 2px 12px rgba(12, 52, 89, 0.12);
  flex-direction: column;
  gap: 5px;
  align-items: center;
}

#nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--on-surface);
  border-radius: 2px;
  transition: transform 220ms ease-in-out, opacity 220ms ease-in-out;
}

#nav-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(12, 52, 89, 0.45);
  z-index: 49;
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
}

/* ─── Responsive ─────────────────────────────────────────── */
@media (max-width: 768px) {
  /* Sidebar off-screen by default */
  .sidebar {
    transform: translateX(-100%);
    transition: transform 220ms ease-in-out;
  }

  /* Slide in when open */
  body.nav-open .sidebar {
    transform: translateX(0);
    box-shadow: 4px 0 32px rgba(12, 52, 89, 0.15);
  }

  /* Show backdrop when open */
  body.nav-open #nav-backdrop {
    display: block;
  }

  /* Hamburger visible */
  #nav-toggle {
    display: flex;
  }

  /* Animate to X when open */
  body.nav-open #nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  body.nav-open #nav-toggle span:nth-child(2) { opacity: 0; }
  body.nav-open #nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  /* Page takes full width */
  .page {
    margin-left: 0;
    padding: 70px 20px 40px;
  }

  /* Typography scale down slightly */
  h1 { font-size: 1.4rem; }
  h2 { font-size: 1.15rem; }

  /* Cards tighter on mobile */
  .card { padding: 20px 16px; }

  /* Tables scroll horizontally */
  table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
}