/* ============================================================
   SSP Client Panel — Complete Styles
   ============================================================ */

/* ===== Variables & Fonts ===== */
:root {
  --clr-bg-body: #0f0f14;
  --clr-bg-secondary: #16161d;
  --clr-bg-input: #1e1e28;
  --clr-border: #2b2b3d;
  --clr-text-primary: #ffffff;
  --clr-text-secondary: #e0e0e0;
  --clr-text-muted: #8888a0;
  --clr-accent: #8b5cf6; /* Purple */
  --clr-accent-hover: #a78bfa;
  --clr-success: #22c55e;
  --clr-danger: #ef4444;
  --clr-warning: #f59e0b;
  --clr-info: #3b82f6;
  --clr-purple-800: #6b21a8;
  
  --fs-xs: 0.75rem;
  --fs-sm: 0.875rem;
  --fs-base: 1rem;
  --fs-lg: 1.125rem;
  --fs-xl: 1.25rem;
  --fs-2xl: 1.5rem;
  --fs-3xl: 2rem;
  
  --sp-1: 0.25rem;
  --sp-2: 0.5rem;
  --sp-3: 0.75rem;
  --sp-4: 1rem;
  --sp-5: 1.25rem;
  --sp-6: 1.5rem;
  --sp-8: 2rem;
  --sp-12: 3rem;
  
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.2);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.3);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.4);
  --shadow-glow: 0 0 15px rgba(139, 92, 246, 0.2);

  --grad-card: linear-gradient(145deg, #1e1e28, #16161d);
  --grad-btn: linear-gradient(135deg, #8b5cf6, #6b21a8);
  --grad-hero: radial-gradient(circle at top right, #1e1e28, #0f0f14);

  --tr-fast: 0.15s ease;
  --tr-normal: 0.3s ease;
  
  --header-h: 70px;
  --z-dropdown: 1000;
}

@font-face {
  font-family: 'Vazirmatn';
  src: url('/fonts/Vazirmatn-Regular.woff2') format('woff2');
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: 'Vazirmatn';
  src: url('/fonts/Vazirmatn-Bold.woff2') format('woff2');
  font-weight: 700;
  font-display: swap;
}
@font-face {
  font-family: 'Ubuntu';
  src: url('/fonts/Ubuntu-Regular.woff2') format('woff2');
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: 'Ubuntu';
  src: url('/fonts/Ubuntu-Bold.woff2') format('woff2');
  font-weight: 700;
  font-display: swap;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: 'Vazirmatn', 'Ubuntu', sans-serif;
  background: var(--clr-bg-body);
  color: var(--clr-text-primary);
  line-height: 1.6;
  direction: rtl;
}
.en { font-family: 'Ubuntu', monospace; direction: ltr; display: inline-block; }
.mono { font-family: 'UbuntuMono-Regular', monospace; }

/* ===== General Components ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-4);
  font-size: var(--fs-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--tr-fast);
  text-decoration: none;
  font-family: inherit;
}
.btn-primary { background: var(--grad-btn); color: white; box-shadow: var(--shadow-glow); }
.btn-primary:hover { opacity: 0.9; transform: translateY(-1px); }
.btn-ghost { background: transparent; border-color: var(--clr-border); color: var(--clr-text-secondary); }
.btn-ghost:hover { background: var(--clr-bg-input); color: var(--clr-text-primary); }
.btn-sm { padding: var(--sp-1) var(--sp-3); font-size: var(--fs-xs); }

.form-group { margin-bottom: var(--sp-4); }
.form-label { display: block; font-size: var(--fs-sm); color: var(--clr-text-muted); margin-bottom: var(--sp-2); }
.form-input {
  width: 100%;
  padding: var(--sp-3);
  background: var(--clr-bg-input);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  color: var(--clr-text-primary);
  font-family: inherit;
  font-size: var(--fs-sm);
  transition: border-color var(--tr-fast);
}
.form-input:focus { outline: none; border-color: var(--clr-accent); }

.card {
  background: var(--grad-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-5);
  margin-bottom: var(--sp-4);
}

.badge {
  display: inline-block;
  padding: 0.2em 0.6em;
  font-size: 0.75em;
  font-weight: 600;
  border-radius: var(--radius-full);
  line-height: 1;
}
.badge--success { background: rgba(34, 197, 94, 0.15); color: var(--clr-success); }
.badge--danger { background: rgba(239, 68, 68, 0.15); color: var(--clr-danger); }
.badge--warning { background: rgba(245, 158, 11, 0.15); color: var(--clr-warning); }
.badge--info { background: rgba(59, 130, 246, 0.15); color: var(--clr-info); }

.table-wrapper { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; font-size: var(--fs-sm); }
.table th, .table td { padding: var(--sp-3); text-align: right; border-bottom: 1px solid var(--clr-border); }
.table th { color: var(--clr-text-muted); font-weight: 600; background: rgba(0,0,0,0.2); }
.table tr:hover { background: rgba(139, 92, 246, 0.03); }

.empty-state { text-align: center; padding: var(--sp-12) var(--sp-4); color: var(--clr-text-muted); }
.empty-state__icon { font-size: 3rem; margin-bottom: var(--sp-4); opacity: 0.5; }
.empty-state__title { font-size: var(--fs-lg); color: var(--clr-text-secondary); margin-bottom: var(--sp-2); }

/* ===== Auth Pages ===== */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--grad-hero);
  padding: var(--sp-6);
}
.auth-box {
  width: 100%;
  max-width: 440px;
  background: var(--grad-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-xl);
  padding: var(--sp-8);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  position: relative;
}
.auth-box::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 3px;
  background: var(--grad-btn);
  border-radius: 0 0 var(--radius-full) var(--radius-full);
}
.auth-logo { text-align: center; margin-bottom: var(--sp-6); }
.auth-logo-icon {
  width: 64px; height: 64px;
  background: var(--grad-btn);
  border-radius: var(--radius-lg);
  display: flex; align-items: center; justify-content: center;
  font-size: 2rem; margin: 0 auto var(--sp-4);
  box-shadow: var(--shadow-glow);
}
.auth-logo h1 { font-size: var(--fs-xl); margin-bottom: var(--sp-1); }
.auth-logo p { font-size: var(--fs-sm); color: var(--clr-text-muted); margin: 0; }
.auth-footer {
  text-align: center;
  margin-top: var(--sp-6);
  padding-top: var(--sp-4);
  border-top: 1px solid var(--clr-border);
}
.auth-footer p { font-size: var(--fs-sm); color: var(--clr-text-muted); margin-bottom: var(--sp-2); }
.auth-footer a { font-size: var(--fs-sm); }

/* ===== Client Layout ===== */
.client-layout {
  display: flex;
  min-height: 100vh;
  padding-top: 0; /* Header removed for simplicity based on JS */
}

/* ===== Client Sidebar ===== */
.client-sidebar {
  width: 240px;
  background: var(--clr-bg-secondary);
  border-left: 1px solid var(--clr-border);
  position: fixed;
  top: 0; right: 0; bottom: 0;
  overflow-y: auto;
  z-index: var(--z-dropdown);
  transition: transform var(--tr-normal);
  display: flex;
  flex-direction: column;
}
.client-sidebar .sidebar__header {
  padding: var(--sp-5);
  border-bottom: 1px solid var(--clr-border);
  flex-shrink: 0;
}
.client-sidebar .sidebar__title {
  font-size: var(--fs-xs);
  color: var(--clr-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin: 0;
}
.sidebar__logo { font-size: var(--fs-lg); font-weight: 700; color: var(--clr-text-primary); margin-bottom: var(--sp-1); }
.sidebar__logo span { color: var(--clr-accent); }

.client-sidebar .sidebar__nav { padding: var(--sp-3); flex: 1; overflow-y: auto; }
.client-sidebar .sidebar__section {
  padding: var(--sp-4) var(--sp-3) var(--sp-2);
  font-size: 0.65rem;
  color: var(--clr-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}
.client-sidebar .sidebar__link {
  display: flex; align-items: center; gap: var(--sp-3);
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--radius-md);
  color: var(--clr-text-secondary);
  font-size: var(--fs-sm);
  font-weight: 600;
  transition: all var(--tr-fast);
  margin-bottom: 2px;
  text-decoration: none;
  cursor: pointer;
}
.client-sidebar .sidebar__link:hover {
  background: rgba(139, 92, 246, 0.08);
  color: var(--clr-text-primary);
}
.client-sidebar .sidebar__link.active {
  background: rgba(139, 92, 246, 0.15);
  color: var(--clr-accent);
}
.client-sidebar .sidebar__link.disabled { opacity: 0.35; pointer-events: none; cursor: not-allowed; }
.sidebar__link-icon { font-size: var(--fs-base); width: 22px; text-align: center; flex-shrink: 0; }

/* ===== Client Main ===== */
.client-main {
  flex: 1;
  margin-right: 240px;
  padding: var(--sp-6);
  min-height: 100vh;
  max-width: 100%;
  overflow-x: hidden;
}
.client-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: var(--sp-6);
  padding-bottom: var(--sp-4);
  border-bottom: 1px solid var(--clr-border);
}
.client-header__title { font-size: var(--fs-2xl); font-weight: 700; }

/* ===== Sidebar Toggle ===== */
.client-sidebar-toggle {
  display: none;
  background: none;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  color: var(--clr-text-primary);
  font-size: var(--fs-lg);
  cursor: pointer;
  padding: var(--sp-1) var(--sp-2);
  line-height: 1;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .client-sidebar { transform: translateX(100%); }
  .client-sidebar.active { transform: translateX(0); box-shadow: -10px 0 40px rgba(0,0,0,0.5); }
  .client-main { margin-right: 0; }
  .client-sidebar-toggle { display: flex; align-items: center; justify-content: center; }
}
@media (max-width: 768px) {
  .client-main { padding: var(--sp-4); }
}

/* ===== Dashboard Cards ===== */
.client-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-4);
  margin-bottom: var(--sp-8);
}
@media (max-width: 900px) { .client-stats-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .client-stats-grid { grid-template-columns: 1fr; } }
.client-stat-card {
  background: var(--grad-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-5);
  display: flex; align-items: center; gap: var(--sp-4);
  transition: all var(--tr-normal);
}
.client-stat-card:hover { border-color: var(--clr-purple-800); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.client-stat-icon {
  width: 48px; height: 48px;
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; flex-shrink: 0;
}
.client-stat-icon--purple { background: rgba(139,92,246,0.12); }
.client-stat-icon--blue   { background: rgba(59,130,246,0.12); }
.client-stat-icon--green  { background: rgba(34,197,94,0.12); }
.client-stat-icon--yellow { background: rgba(245,158,11,0.12); }
.client-stat-number { font-size: var(--fs-2xl); font-weight: 700; line-height: 1.2; }
.client-stat-number--purple { color: var(--clr-accent); }
.client-stat-number--blue   { color: var(--clr-info); }
.client-stat-number--green  { color: var(--clr-success); }
.client-stat-number--yellow { color: var(--clr-warning); }
.client-stat-label { font-size: var(--fs-xs); color: var(--clr-text-muted); margin-top: 2px; }

/* ===== Modals ===== */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(4px);
  z-index: 2000;
  display: flex; align-items: center; justify-content: center;
  padding: var(--sp-4);
  opacity: 0; visibility: hidden; transition: all var(--tr-normal);
}
.modal-overlay.active { opacity: 1; visibility: visible; }
.modal {
  background: var(--clr-bg-secondary);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-xl);
  width: 100%; max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.9);
  transition: transform var(--tr-normal);
}
.modal-overlay.active .modal { transform: scale(1); }
.modal__header {
  padding: var(--sp-4) var(--sp-5);
  border-bottom: 1px solid var(--clr-border);
  display: flex; justify-content: space-between; align-items: center;
}
.modal__title { font-size: var(--fs-lg); font-weight: 700; }
.modal__close {
  background: none; border: none; color: var(--clr-text-muted); font-size: 1.5rem; cursor: pointer;
  padding: 0; line-height: 1;
}
.modal__body { padding: var(--sp-5); }
.modal__footer {
  padding: var(--sp-4) var(--sp-5);
  border-top: 1px solid var(--clr-border);
  display: flex; justify-content: flex-end; gap: var(--sp-3);
}

/* ===== Toast ===== */
#toastContainer {
  position: fixed; bottom: var(--sp-6); left: var(--sp-6);
  display: flex; flex-direction: column; gap: var(--sp-3);
  z-index: 3000;
}
.toast {
  background: var(--clr-bg-secondary);
  border: 1px solid var(--clr-border);
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: flex; align-items: center; gap: var(--sp-3);
  font-size: var(--fs-sm);
  animation: slideIn 0.3s ease;
}
.toast--success { border-color: var(--clr-success); }
.toast--error { border-color: var(--clr-danger); }
@keyframes slideIn { from { transform: translateX(-100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* ===== QR Display ===== */
.qr-display { background: #fff; border-radius: var(--radius-lg); padding: var(--sp-4); display: inline-block; margin: var(--sp-4) auto; text-align: center; }
.qr-display img { width: 250px; height: 250px; display: block; margin: 0 auto; }

/* ===== Locked Feature ===== */
.locked-overlay { text-align: center; padding: var(--sp-12); }
.locked-overlay__icon { font-size: 4rem; margin-bottom: var(--sp-4); opacity: 0.5; }
.locked-overlay__title { font-size: var(--fs-lg); color: var(--clr-text-secondary); margin-bottom: var(--sp-2); }
.locked-overlay__text { font-size: var(--fs-sm); color: var(--clr-text-muted); margin-bottom: var(--sp-6); }

/* ===== Specific Section Styles ===== */
.welcome-banner {
  background: linear-gradient(135deg, rgba(139,92,246,0.1) 0%, rgba(59,130,246,0.05) 100%);
  border: 1px solid var(--clr-purple-800);
  border-radius: var(--radius-xl);
  padding: var(--sp-6);
  margin-bottom: var(--sp-6);
  display: flex; align-items: center; justify-content: space-between; gap: var(--sp-4); flex-wrap: wrap;
}
.welcome-banner h2 { font-size: var(--fs-xl); margin-bottom: var(--sp-1); }
.welcome-banner p { font-size: var(--fs-sm); color: var(--clr-text-muted); margin: 0; }

.filter-bar {
  display: flex; gap: var(--sp-3); margin-bottom: var(--sp-6); flex-wrap: wrap;
  padding: var(--sp-4); background: var(--clr-bg-secondary); border-radius: var(--radius-md); border: 1px solid var(--clr-border);
}
.filter-bar .form-group { margin-bottom: 0; flex: 1; min-width: 150px; }

.student-card-box {
  background: var(--grad-card); border: 1px solid var(--clr-border);
  border-radius: var(--radius-xl); padding: var(--sp-8);
  max-width: 600px; position: relative; overflow: hidden;
}
.student-card-box::before { content: ''; position: absolute; top: 0; right: 0; left: 0; height: 4px; background: var(--grad-btn); }
.student-card-header { display: flex; align-items: center; gap: var(--sp-4); margin-bottom: var(--sp-6); padding-bottom: var(--sp-4); border-bottom: 1px solid var(--clr-border); }
.student-card-avatar { width: 64px; height: 64px; background: rgba(139,92,246,0.12); border-radius: var(--radius-full); display: flex; align-items: center; justify-content: center; font-size: 2rem; flex-shrink: 0; }
.student-card-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(110px, 1fr)); gap: var(--sp-3); margin-top: var(--sp-6); }
.student-card-stat { text-align: center; padding: var(--sp-3); background: var(--clr-bg-input); border-radius: var(--radius-md); border: 1px solid var(--clr-border); }
.student-card-stat__number { font-size: var(--fs-xl); font-weight: 700; margin-bottom: 2px; }
.student-card-stat__label { font-size: 0.65rem; color: var(--clr-text-muted); }