/* =====================================================
   Campus Portal — Premium UI Theme
   ===================================================== */

:root {
  --bg-0: #0b0e1a;
  --bg-1: #10142a;
  --bg-2: #161b36;
  --surface: rgba(255, 255, 255, 0.055);
  --surface-strong: rgba(255, 255, 255, 0.09);
  --border: rgba(255, 255, 255, 0.10);
  --border-soft: rgba(255, 255, 255, 0.06);
  --text-hi: #f5f6fb;
  --text-mid: #b7bdd6;
  --text-low: #7d84a6;
  --accent-1: #7c5cff;
  --accent-2: #22d3ee;
  --accent-3: #f472b6;
  --gradient-brand: linear-gradient(135deg, #7c5cff 0%, #22d3ee 100%);
  --gradient-warm: linear-gradient(135deg, #f472b6 0%, #7c5cff 100%);
  --success: #34d399;
  --danger: #fb7185;
  --danger-2: #f43f5e;
  --radius-lg: 22px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --shadow-soft: 0 20px 50px -20px rgba(0, 0, 0, 0.55);
  --shadow-glow: 0 0 0 1px rgba(124, 92, 255, 0.15), 0 20px 60px -15px rgba(124, 92, 255, 0.35);
}

* { box-sizing: border-box; }

html, body {
  min-height: 100%;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text-hi);
  background:
    radial-gradient(1100px 600px at 8% -10%, rgba(124, 92, 255, 0.25), transparent 60%),
    radial-gradient(900px 500px at 110% 10%, rgba(34, 211, 238, 0.16), transparent 55%),
    radial-gradient(800px 500px at 50% 120%, rgba(244, 114, 182, 0.12), transparent 55%),
    var(--bg-0);
  background-attachment: fixed;
  min-height: 100vh;
  letter-spacing: -0.01em;
}

h1, h2, h3, h4, h5, .brand-font {
  font-family: 'Poppins', 'Inter', sans-serif;
  letter-spacing: -0.02em;
}

::selection { background: rgba(124, 92, 255, 0.35); }

/* Scrollbar */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(124, 92, 255, 0.35); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: rgba(124, 92, 255, 0.55); }

/* =================== Navbar =================== */
.cp-navbar {
  background: rgba(13, 16, 33, 0.72);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border-bottom: 1px solid var(--border-soft);
  padding: 0.9rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.cp-brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text-hi) !important;
  text-decoration: none;
}

.cp-brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: var(--gradient-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  box-shadow: 0 8px 20px -6px rgba(124, 92, 255, 0.6);
  flex-shrink: 0;
}

.cp-nav-link {
  color: var(--text-mid) !important;
  font-weight: 500;
  font-size: 0.92rem;
  padding: 0.5rem 0.9rem !important;
  border-radius: 10px;
  transition: all 0.2s ease;
}

.cp-nav-link:hover, .cp-nav-link.active {
  color: var(--text-hi) !important;
  background: var(--surface);
}

/* =================== Layout helpers =================== */
.cp-page {
  padding: 2.75rem 0 4rem;
  min-height: calc(100vh - 76px);
}

.cp-eyebrow {
  text-transform: uppercase;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--accent-2);
  margin-bottom: 0.5rem;
}

.cp-title {
  font-weight: 700;
  font-size: 2rem;
  color: var(--text-hi);
  margin-bottom: 0.35rem;
}

.cp-subtitle {
  color: var(--text-mid);
  font-size: 0.98rem;
  margin-bottom: 0;
}

/* =================== Glass Card =================== */
.cp-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-soft);
}

.cp-card-pad { padding: 2.25rem; }

/* =================== Stat pills (display page) =================== */
.cp-stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.15rem 1.35rem;
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

.cp-stat-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  flex-shrink: 0;
}

.cp-stat-value {
  font-family: 'Poppins', sans-serif;
  font-weight: 700;
  font-size: 1.45rem;
  line-height: 1.1;
  color: var(--text-hi);
}

.cp-stat-label {
  color: var(--text-low);
  font-size: 0.78rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* =================== Forms =================== */
.cp-field-label {
  font-size: 0.83rem;
  font-weight: 600;
  color: var(--text-mid);
  margin-bottom: 0.4rem;
  display: block;
}

.cp-form .form-control,
.cp-form .form-select {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  color: var(--text-hi);
  border-radius: var(--radius-sm);
  padding: 0.72rem 0.95rem;
  font-size: 0.95rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.cp-form textarea.form-control { min-height: 96px; resize: vertical; }

.cp-form .form-control::placeholder { color: var(--text-low); }

.cp-form .form-control:focus,
.cp-form .form-select:focus {
  background: rgba(255, 255, 255, 0.065);
  border-color: rgba(124, 92, 255, 0.55);
  box-shadow: 0 0 0 4px rgba(124, 92, 255, 0.16);
  color: var(--text-hi);
}

.cp-form select.form-select option { background: #171b38; color: var(--text-hi); }

.cp-form input[type="file"].form-control {
  padding: 0.55rem 0.8rem;
}
.cp-form input[type="file"].form-control::file-selector-button {
  background: var(--gradient-brand);
  border: none;
  color: white;
  padding: 0.4rem 0.85rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.82rem;
  margin-right: 0.85rem;
  cursor: pointer;
}

.cp-error-text {
  color: var(--danger);
  font-size: 0.8rem;
  margin-top: 0.35rem;
  margin-bottom: 0;
}

/* =================== Buttons =================== */
.btn-cp-primary {
  background: var(--gradient-brand);
  border: none;
  color: #fff;
  font-weight: 600;
  padding: 0.68rem 1.5rem;
  border-radius: var(--radius-sm);
  box-shadow: 0 12px 30px -10px rgba(124, 92, 255, 0.6);
  transition: transform 0.15s ease, box-shadow 0.15s ease, filter 0.15s ease;
}
.btn-cp-primary:hover {
  transform: translateY(-1px);
  filter: brightness(1.08);
  box-shadow: 0 16px 36px -10px rgba(124, 92, 255, 0.7);
  color: #fff;
}
.btn-cp-primary:active { transform: translateY(0); }

.btn-cp-outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-mid);
  font-weight: 600;
  padding: 0.66rem 1.4rem;
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
}
.btn-cp-outline:hover {
  color: var(--text-hi);
  background: var(--surface);
  border-color: rgba(255, 255, 255, 0.22);
}

.btn-cp-danger {
  background: linear-gradient(135deg, #fb7185 0%, #f43f5e 100%);
  border: none;
  color: #fff;
  font-weight: 600;
  padding: 0.68rem 1.5rem;
  border-radius: var(--radius-sm);
  box-shadow: 0 12px 30px -10px rgba(244, 63, 94, 0.55);
  transition: transform 0.15s ease, filter 0.15s ease;
}
.btn-cp-danger:hover { transform: translateY(-1px); filter: brightness(1.08); color: #fff; }

.btn-icon-sm {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-mid);
  transition: all 0.15s ease;
}
.btn-icon-sm:hover { color: var(--text-hi); background: var(--surface-strong); }
.btn-icon-sm.danger:hover { color: var(--danger); border-color: rgba(244, 63, 94, 0.4); background: rgba(244, 63, 94, 0.1); }

/* =================== Student Cards (display grid) =================== */
.stud-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
}
.stud-card:hover {
  transform: translateY(-4px);
  border-color: rgba(124, 92, 255, 0.35);
  box-shadow: var(--shadow-glow);
}

.stud-card-cover {
  height: 84px;
  background: var(--gradient-brand);
  position: relative;
}

.stud-avatar-wrap {
  position: absolute;
  left: 1.4rem;
  bottom: -32px;
  width: 68px;
  height: 68px;
  border-radius: 18px;
  border: 3px solid var(--bg-1);
  overflow: hidden;
  background: var(--bg-2);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 20px -6px rgba(0, 0, 0, 0.5);
}
.stud-avatar-wrap img { width: 100%; height: 100%; object-fit: cover; }
.stud-avatar-initials {
  font-family: 'Poppins', sans-serif;
  font-weight: 700;
  font-size: 1.2rem;
  color: #fff;
  background: var(--gradient-warm);
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.stud-card-body { padding: 2.6rem 1.4rem 1.4rem; flex: 1; display: flex; flex-direction: column; }

.stud-name { font-weight: 700; font-size: 1.08rem; color: var(--text-hi); margin-bottom: 0.15rem; }
.stud-roll { color: var(--text-low); font-size: 0.82rem; margin-bottom: 0.9rem; }

.stud-meta-row {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  font-size: 0.85rem;
  color: var(--text-mid);
  margin-bottom: 0.5rem;
}
.stud-meta-row i { color: var(--accent-2); margin-top: 0.15rem; flex-shrink: 0; }

.course-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.3rem 0.65rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  margin-bottom: 1rem;
  width: fit-content;
}
.course-badge.pfs { color: #34d399; background: rgba(52, 211, 153, 0.12); border-color: rgba(52, 211, 153, 0.3); }
.course-badge.jfs { color: #fbbf24; background: rgba(251, 191, 36, 0.12); border-color: rgba(251, 191, 36, 0.3); }
.course-badge.mern { color: #22d3ee; background: rgba(34, 211, 238, 0.12); border-color: rgba(34, 211, 238, 0.3); }

.stud-card-actions {
  margin-top: auto;
  display: flex;
  gap: 0.55rem;
  padding-top: 0.9rem;
  border-top: 1px solid var(--border-soft);
}

/* =================== Empty state =================== */
.cp-empty {
  text-align: center;
  padding: 4.5rem 2rem;
  color: var(--text-mid);
}
.cp-empty i { font-size: 2.6rem; color: var(--accent-1); opacity: 0.8; margin-bottom: 1rem; }

/* =================== Toolbar / search =================== */
.cp-search-wrap { position: relative; }
.cp-search-wrap i {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-low);
}
.cp-search-wrap .form-control { padding-left: 2.6rem; }

.cp-filter-chip {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-mid);
  border-radius: 999px;
  padding: 0.45rem 1rem;
  font-size: 0.82rem;
  font-weight: 600;
  transition: all 0.15s ease;
}
.cp-filter-chip.active, .cp-filter-chip:hover {
  color: #fff;
  background: var(--gradient-brand);
  border-color: transparent;
}

/* =================== Danger / delete confirm =================== */
.cp-danger-icon {
  width: 64px;
  height: 64px;
  border-radius: 18px;
  background: rgba(244, 63, 94, 0.12);
  border: 1px solid rgba(244, 63, 94, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  color: var(--danger);
  margin: 0 auto 1.3rem;
}

/* =================== Fade-in animation =================== */
@keyframes cpFadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}
.cp-animate { animation: cpFadeUp 0.5s ease both; }
.cp-animate-delay-1 { animation-delay: 0.06s; }
.cp-animate-delay-2 { animation-delay: 0.12s; }

/* =================== Footer =================== */
.cp-footer {
  border-top: 1px solid var(--border-soft);
  color: var(--text-low);
  font-size: 0.82rem;
  padding: 1.5rem 0;
  text-align: center;
}

/* =================== Alerts / messages =================== */
.cp-alert {
  border-radius: var(--radius-sm);
  border: 1px solid rgba(244, 63, 94, 0.35);
  background: rgba(244, 63, 94, 0.1);
  color: #fecdd3;
  padding: 0.85rem 1.1rem;
  font-size: 0.9rem;
}

@media (max-width: 767.98px) {
  .cp-title { font-size: 1.6rem; }
  .cp-card-pad { padding: 1.5rem; }
}