/* ═══════════════════════════════════════════
   StudentMS — style.css
   Font: Plus Jakarta Sans + JetBrains Mono
   Theme: Deep navy with amber accent
═══════════════════════════════════════════ */

/* ── VARIABLES ───────────────────────────── */
:root {
  --navy:        #0f172a;
  --navy-2:      #1e293b;
  --navy-3:      #334155;
  --slate:       #64748b;
  --border:      #e2e8f0;
  --surface:     #f8fafc;
  --white:       #ffffff;

  --amber:       #f59e0b;
  --amber-light: #fef3c7;
  --amber-dark:  #d97706;

  --blue:        #3b82f6;
  --blue-light:  #dbeafe;
  --green:       #10b981;
  --green-light: #d1fae5;
  --pink:        #ec4899;
  --pink-light:  #fce7f3;
  --orange:      #f97316;
  --orange-light:#ffedd5;
  --red:         #ef4444;
  --red-light:   #fee2e2;

  --radius:      12px;
  --radius-sm:   8px;
  --shadow-sm:   0 1px 3px rgba(0,0,0,.08);
  --shadow:      0 4px 16px rgba(0,0,0,.10);
  --shadow-md:   0 8px 32px rgba(0,0,0,.14);

  --sidebar-w:   240px;
  --navbar-h:    64px;
  --font:        'Plus Jakarta Sans', sans-serif;
  --mono:        'JetBrains Mono', monospace;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--surface);
  color: var(--navy);
  min-height: 100vh;
  line-height: 1.6;
  font-size: 15px;
}

a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── NAVBAR ──────────────────────────────── */
.navbar {
  position: sticky; top: 0; z-index: 100;
  height: var(--navbar-h);
  background: var(--navy);
  display: flex; align-items: center;
  padding: 0 24px;
  gap: 24px;
  box-shadow: 0 2px 12px rgba(0,0,0,.25);
}

.nav-brand {
  display: flex; align-items: center; gap: 10px;
  color: var(--white);
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  min-width: 160px;
}
.nav-logo {
  width: 36px; height: 36px;
  background: var(--amber);
  border-radius: 8px;
  display: grid; place-items: center;
  color: var(--navy);
  font-size: 1rem;
}

.nav-links {
  display: flex; align-items: center;
  list-style: none;
  gap: 4px;
  flex: 1;
}
.nav-links a {
  display: flex; align-items: center; gap: 7px;
  padding: 8px 14px;
  border-radius: 8px;
  color: rgba(255,255,255,.70);
  font-size: .875rem;
  font-weight: 500;
  transition: all .2s;
}
.nav-links a:hover { color: var(--white); background: rgba(255,255,255,.08); text-decoration: none; }
.nav-links a.active { color: var(--amber); background: rgba(245,158,11,.12); }

.nav-divider { flex: 1; }

.btn-logout {
  display: flex; align-items: center; gap: 7px;
  padding: 8px 14px;
  border-radius: 8px;
  color: rgba(255,255,255,.7) !important;
  font-size: .875rem;
  font-weight: 500;
  transition: all .2s;
}
.btn-logout:hover {
  color: var(--white) !important;
  background: rgba(239,68,68,.18) !important;
  text-decoration: none;
}

.nav-user {
  display: flex; align-items: center; gap: 8px;
  color: rgba(255,255,255,.65);
  font-size: .85rem;
  padding-left: 16px;
  border-left: 1px solid rgba(255,255,255,.12);
}

.nav-toggle { display: none; background: none; border: none; color: var(--white); font-size: 1.2rem; cursor: pointer; }

/* ── MAIN CONTENT ────────────────────────── */
.main-content {
  max-width: 1280px;
  margin: 0 auto;
  padding: 32px 24px;
}

/* ── PAGE HEADER ─────────────────────────── */
.page-header {
  display: flex; align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 28px;
  gap: 16px;
  flex-wrap: wrap;
}
.page-title {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--navy);
  line-height: 1.2;
}
.page-sub {
  font-size: .9rem;
  color: var(--slate);
  margin-top: 4px;
}

/* ── CARDS ───────────────────────────────── */
.card {
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.card-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  gap: 12px;
}
.card-header h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--navy);
  display: flex; align-items: center; gap: 8px;
}

.mt-3 { margin-top: 16px; }
.mt-4 { margin-top: 24px; }

/* ── STAT CARDS ──────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}
.stat-card {
  border-radius: var(--radius);
  padding: 24px;
  display: flex; align-items: center; gap: 18px;
  box-shadow: var(--shadow-sm);
  border: 1px solid transparent;
  transition: transform .2s, box-shadow .2s;
}
.stat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }

.stat-icon {
  width: 54px; height: 54px;
  border-radius: 12px;
  display: grid; place-items: center;
  font-size: 1.4rem;
  flex-shrink: 0;
}
.stat-number { display: block; font-size: 2rem; font-weight: 800; line-height: 1; }
.stat-label  { display: block; font-size: .8rem; font-weight: 500; opacity: .75; margin-top: 4px; }

.stat-blue   { background: var(--blue-light);   color: #1d4ed8; } .stat-blue   .stat-icon { background: #3b82f6; color: #fff; }
.stat-green  { background: var(--green-light);  color: #065f46; } .stat-green  .stat-icon { background: #10b981; color: #fff; }
.stat-pink   { background: var(--pink-light);   color: #9d174d; } .stat-pink   .stat-icon { background: #ec4899; color: #fff; }
.stat-orange { background: var(--orange-light); color: #c2410c; } .stat-orange .stat-icon { background: #f97316; color: #fff; }

/* ── QUICK LINKS ─────────────────────────── */
.quick-links {
  display: flex; flex-wrap: wrap; gap: 12px;
}
.qlink {
  display: flex; align-items: center; gap: 10px;
  padding: 14px 20px;
  border-radius: var(--radius);
  background: var(--white);
  border: 1px solid var(--border);
  color: var(--navy);
  font-weight: 600;
  font-size: .9rem;
  transition: all .2s;
  box-shadow: var(--shadow-sm);
}
.qlink i { font-size: 1.1rem; color: var(--blue); }
.qlink:hover { background: var(--navy); color: var(--white); border-color: var(--navy); transform: translateY(-1px); box-shadow: var(--shadow); text-decoration: none; }
.qlink:hover i { color: var(--amber); }
.qlink-danger:hover { background: var(--red); border-color: var(--red); }
.qlink-danger:hover i { color: var(--white); }

/* ── TABLE ───────────────────────────────── */
.table-wrap { overflow-x: auto; }

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .875rem;
}
.data-table thead tr {
  background: var(--navy);
  color: var(--white);
}
.data-table th {
  padding: 13px 16px;
  text-align: left;
  font-weight: 600;
  font-size: .8rem;
  letter-spacing: .04em;
  text-transform: uppercase;
  white-space: nowrap;
}
.data-table td {
  padding: 13px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--navy);
  white-space: nowrap;
}
.data-table tbody tr:last-child td { border-bottom: none; }
.data-table tbody tr:hover { background: #f1f5f9; }

.fw-600 { font-weight: 600; }
.text-small { font-size: .8rem; color: var(--slate); }

/* ── BADGES ──────────────────────────────── */
.badge {
  display: inline-flex; align-items: center;
  padding: 3px 10px;
  border-radius: 99px;
  font-size: .78rem;
  font-weight: 600;
}
.badge-id    { background: var(--navy); color: var(--amber); font-family: var(--mono); }
.badge-blue  { background: var(--blue-light);  color: #1d4ed8; }
.badge-pink  { background: var(--pink-light);  color: #9d174d; }
.badge-gray  { background: #f1f5f9; color: var(--slate); }

/* ── ACTION BUTTONS ──────────────────────── */
.actions { display: flex; gap: 6px; }

.btn-icon {
  width: 32px; height: 32px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  display: grid; place-items: center;
  font-size: .85rem;
  transition: all .2s;
  text-decoration: none;
}
.btn-view   { background: var(--blue-light);  color: var(--blue); }
.btn-edit   { background: var(--amber-light); color: var(--amber-dark); }
.btn-delete { background: var(--red-light);   color: var(--red); }
.btn-icon:hover { filter: brightness(.9); transform: scale(1.05); }

/* ── BUTTONS ─────────────────────────────── */
.btn-primary, .btn-outline, .btn-ghost, .btn-danger {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: .9rem;
  font-weight: 600;
  font-family: var(--font);
  cursor: pointer;
  transition: all .2s;
  border: 2px solid transparent;
  text-decoration: none;
}
.btn-primary { background: var(--amber); color: var(--navy); border-color: var(--amber); }
.btn-primary:hover { background: var(--amber-dark); border-color: var(--amber-dark); color: var(--white); text-decoration: none; transform: translateY(-1px); }

.btn-outline { background: transparent; color: var(--navy); border-color: var(--border); }
.btn-outline:hover { background: var(--navy); color: var(--white); border-color: var(--navy); text-decoration: none; }

.btn-ghost { background: var(--surface); color: var(--slate); border-color: var(--border); }
.btn-ghost:hover { background: var(--border); text-decoration: none; }

.btn-danger { background: var(--red); color: var(--white); border-color: var(--red); }
.btn-danger:hover { background: #dc2626; text-decoration: none; }

.btn-full { width: 100%; justify-content: center; padding: 13px; font-size: 1rem; }

/* ── EMPTY STATE ─────────────────────────── */
.empty-state {
  text-align: center;
  padding: 56px 24px;
  color: var(--slate);
}
.empty-state i { font-size: 3rem; opacity: .3; display: block; margin-bottom: 16px; }
.empty-state p { font-size: 1rem; }

/* ── SEARCH BAR ──────────────────────────── */
.search-bar { padding: 16px 20px; }
.search-row {
  display: flex; gap: 10px; align-items: center; flex-wrap: wrap;
}
.search-input-wrap {
  position: relative; flex: 1; min-width: 200px;
}
.search-icon {
  position: absolute; left: 14px; top: 50%;
  transform: translateY(-50%);
  color: var(--slate); pointer-events: none;
}
.search-input-wrap input {
  width: 100%;
  padding: 10px 14px 10px 40px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: .9rem;
  font-family: var(--font);
  outline: none;
  transition: border-color .2s;
}
.search-input-wrap input:focus { border-color: var(--amber); box-shadow: 0 0 0 3px rgba(245,158,11,.15); }
.clear-search {
  position: absolute; right: 12px; top: 50%;
  transform: translateY(-50%);
  background: none; border: none; color: var(--slate);
  cursor: pointer; font-size: .9rem;
}
.search-col {
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: .9rem;
  background: var(--white);
  color: var(--navy);
  outline: none;
  cursor: pointer;
}

/* ── FLASH MESSAGES ──────────────────────── */
.flash-container {
  position: fixed; top: 72px; right: 20px;
  z-index: 200;
  display: flex; flex-direction: column; gap: 8px;
  max-width: 380px;
}
.alert {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  font-size: .9rem;
  font-weight: 500;
  box-shadow: var(--shadow-md);
  animation: slideIn .3s ease;
}
@keyframes slideIn {
  from { opacity: 0; transform: translateX(40px); }
  to   { opacity: 1; transform: translateX(0); }
}
.alert-success { background: var(--green-light); color: #065f46; border: 1px solid #a7f3d0; }
.alert-danger  { background: var(--red-light);   color: #991b1b; border: 1px solid #fca5a5; }
.alert-warning { background: var(--amber-light); color: #92400e; border: 1px solid #fcd34d; }
.alert-info    { background: var(--blue-light);  color: #1e40af; border: 1px solid #93c5fd; }

.alert i { margin-top: 2px; flex-shrink: 0; }
.alert-close {
  margin-left: auto; background: none; border: none;
  font-size: 1.1rem; cursor: pointer; opacity: .6; padding: 0 0 0 8px;
}
.alert-close:hover { opacity: 1; }

/* ── FORMS ───────────────────────────────── */
.form-section {
  padding: 24px;
  border-bottom: 1px solid var(--border);
}
.form-section:last-of-type { border-bottom: none; }
.form-section-title {
  font-size: .85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--slate);
  margin-bottom: 20px;
  display: flex; align-items: center; gap: 8px;
}
.form-section-title i { color: var(--amber); }

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 18px;
}
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group-full { grid-column: 1 / -1; }

.form-group label {
  font-size: .85rem;
  font-weight: 600;
  color: var(--navy-3);
}
.req { color: var(--red); margin-left: 2px; }

.form-group input,
.form-group select,
.form-group textarea {
  padding: 10px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: .9rem;
  font-family: var(--font);
  color: var(--navy);
  background: var(--white);
  outline: none;
  transition: all .2s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--amber);
  box-shadow: 0 0 0 3px rgba(245,158,11,.15);
}
.form-group input.is-invalid,
.form-group select.is-invalid,
.form-group textarea.is-invalid {
  border-color: var(--red);
  box-shadow: 0 0 0 3px rgba(239,68,68,.12);
}
.form-group textarea { resize: vertical; min-height: 80px; }
.field-error { font-size: .8rem; color: var(--red); min-height: 18px; }

.form-actions {
  display: flex; gap: 12px; align-items: center;
  padding: 20px 24px;
  background: var(--surface);
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
}

/* ── LOGIN PAGE ──────────────────────────── */
.login-wrapper {
  min-height: 100vh;
  display: flex;
}
.login-panel-left {
  flex: 1;
  background: var(--navy);
  display: flex; flex-direction: column;
  justify-content: center; align-items: flex-start;
  padding: 60px;
  gap: 40px;
}
.login-brand { color: var(--white); }
.login-icon {
  width: 64px; height: 64px;
  background: var(--amber);
  border-radius: 16px;
  display: grid; place-items: center;
  font-size: 1.8rem; color: var(--navy);
  margin-bottom: 20px;
}
.login-brand h1 {
  font-size: 2.5rem; font-weight: 800;
  letter-spacing: -1px;
  background: linear-gradient(135deg, #fff 0%, var(--amber) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.login-brand p { color: rgba(255,255,255,.6); margin-top: 6px; }
.login-features { list-style: none; display: flex; flex-direction: column; gap: 14px; }
.login-features li {
  display: flex; align-items: center; gap: 12px;
  color: rgba(255,255,255,.8); font-size: .95rem;
}
.login-features i { color: var(--amber); }

.login-panel-right {
  width: 480px;
  display: flex; align-items: center; justify-content: center;
  background: var(--surface);
  padding: 40px;
}
.login-card {
  width: 100%;
  max-width: 400px;
  background: var(--white);
  border-radius: 20px;
  padding: 40px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border);
}
.login-header { margin-bottom: 32px; text-align: center; }
.login-header h2 { font-size: 1.75rem; font-weight: 800; color: var(--navy); }
.login-header p  { color: var(--slate); font-size: .9rem; margin-top: 6px; }

.login-card .form-group { margin-bottom: 20px; }
.login-card .form-group label {
  display: flex; align-items: center; gap: 7px;
  font-size: .875rem; font-weight: 600; color: var(--navy-3);
  margin-bottom: 8px;
}
.input-icon-wrap { position: relative; }
.input-icon-wrap input { width: 100%; padding-right: 44px; }
.toggle-pw {
  position: absolute; right: 12px; top: 50%;
  transform: translateY(-50%);
  background: none; border: none;
  color: var(--slate); cursor: pointer;
}

.login-hint {
  text-align: center;
  font-size: .82rem;
  color: var(--slate);
  margin-top: 20px;
}
.login-hint code {
  font-family: var(--mono);
  background: var(--surface);
  padding: 2px 6px; border-radius: 4px;
  font-size: .82rem;
  color: var(--amber-dark);
}

/* ── MODAL ───────────────────────────────── */
.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.45);
  display: flex; align-items: center; justify-content: center;
  z-index: 500;
  animation: fadeBg .2s ease;
}
@keyframes fadeBg { from { opacity: 0; } to { opacity: 1; } }

.modal {
  background: var(--white);
  border-radius: 20px;
  padding: 36px;
  width: 90%; max-width: 400px;
  text-align: center;
  box-shadow: var(--shadow-md);
  animation: popIn .25s ease;
}
@keyframes popIn {
  from { opacity: 0; transform: scale(.9); }
  to   { opacity: 1; transform: scale(1); }
}
.modal-icon {
  width: 60px; height: 60px;
  border-radius: 50%;
  display: grid; place-items: center;
  font-size: 1.5rem;
  margin: 0 auto 16px;
}
.modal-icon.danger { background: var(--red-light); color: var(--red); }
.modal h3 { font-size: 1.3rem; font-weight: 800; margin-bottom: 10px; }
.modal p  { color: var(--slate); font-size: .9rem; line-height: 1.6; }
.modal-actions { display: flex; gap: 10px; justify-content: center; margin-top: 24px; }

/* ── RESPONSIVE ──────────────────────────── */
@media (max-width: 900px) {
  .login-panel-left { display: none; }
  .login-panel-right { width: 100%; }
}
@media (max-width: 768px) {
  .nav-links { display: none; flex-direction: column; position: absolute; top: var(--navbar-h); left: 0; right: 0; background: var(--navy); padding: 12px; gap: 4px; }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }
  .navbar { position: relative; flex-wrap: wrap; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .form-grid { grid-template-columns: 1fr; }
  .main-content { padding: 20px 16px; }
  .page-header { flex-direction: column; align-items: flex-start; }
  .flash-container { right: 10px; left: 10px; max-width: none; }
  .quick-links { flex-direction: column; }
}
@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr; }
  .search-row { flex-direction: column; align-items: stretch; }
  .login-card { padding: 28px 20px; }
}