/* =====================================================
   ENROLLA — Premium Academic SaaS Redesign
   ===================================================== */

/* Fonts and icons are now loaded via <link> tags in HTML for better performance */

/* ─────────────────────────────────────────────────────
   COLOR SYSTEM & VARIABLES
   ───────────────────────────────────────────────────── */
:root {
  /* Core Colors */
  --primary:        #1A3C6E; /* deep navy — trust, education */
  --accent:         #2563EB; /* electric blue — CTAs, interactive */
  --gold:           #F0A500; /* premium gold — highlights, ratings */
  --sky:            #0EA5E9; /* sky blue — secondary actions */
  
  /* Backgrounds */
  --bg-page:        #F8FAFC; /* clean slate off-white */
  --bg-card:        #FFFFFF; /* pure white */
  
  /* Text */
  --text-primary:   #0F172A; /* near-black — body text */
  --text-secondary: #475569; /* slate — supporting text */
  --text-muted:     #94A3B8; /* placeholder, inactive */
  
  /* Status */
  --success:        #10B981; /* green — confirmed bookings */
  --danger:         #EF4444; /* red — errors */
  --warning:        #F59E0B; /* amber — pending */
  
  /* Borders */
  --border:         #E2E8F0; /* light gray — dividers */
  --border-focus:   rgba(37, 99, 235, 0.3); /* accent subtle */
  
  /* Spacing */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-6: 24px;
  --space-8: 32px;
  --space-12: 48px;
  --space-16: 64px;

  /* Typography */
  --font-base: 'Cairo', sans-serif;
  --font-num: 'Inter', sans-serif;
}

/* ─────────────────────────────────────────────────────
   RESET & BASE
   ───────────────────────────────────────────────────── */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-base);
  background-color: var(--bg-page);
  color: var(--text-primary);
  line-height: 1.7;
  font-size: 1rem;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  text-decoration: none;
  color: var(--accent);
  transition: all 0.2s ease;
}

button {
  cursor: pointer;
  font-family: inherit;
  border: none;
  background: none;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--primary);
  font-weight: 700;
  line-height: 1.3;
}

/* Numeric text utility */
.num, .v-code {
  font-family: var(--font-num) !important;
  font-weight: 600;
  direction: ltr;
  display: inline-block;
}

/* ─────────────────────────────────────────────────────
   LAYOUT & UTILS
   ───────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.pw-md { max-width: 800px; margin: 0 auto; padding: 0 var(--space-4); }
.pw-sm { max-width: 500px; margin: 0 auto; padding: 0 var(--space-4); }

.mt-1 { margin-top: var(--space-4); }
.mt-2 { margin-top: var(--space-8); }
.mb-1 { margin-bottom: var(--space-4); }
.mb-2 { margin-bottom: var(--space-8); }
.text-center { text-align: center; }

/* ─────────────────────────────────────────────────────
   NAVBAR
   ───────────────────────────────────────────────────── */
.pub-nav {
  height: 64px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-6);
  position: sticky;
  top: 0;
  z-index: 50;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--primary);
  font-size: 1.25rem;
  font-weight: 700;
}

.nav-brand i {
  font-size: 1.75rem;
  color: var(--primary);
}

.chem-logo-icon {
  font-size: 2rem !important;
  background: linear-gradient(135deg, #0cebeb 0%, #20e3b2 50%, #29ffc6 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
  animation: flask-bounce 3s ease-in-out infinite;
  filter: drop-shadow(0 2px 5px rgba(32, 227, 178, 0.4));
}

@keyframes flask-bounce {
  0%, 100% { transform: translateY(0) rotate(-2deg); }
  50% { transform: translateY(-3px) rotate(2deg); }
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links a.nav-link {
  font-weight: 600;
  font-size: 0.9rem;
  padding: 6px 14px;
  border-radius: 20px;
  transition: all 0.3s ease;
  border: 1px solid transparent;
}

/* Home Button (Green Theme) */
.nav-links a[href="index.php"].nav-link {
  color: var(--success);
  border-color: rgba(16, 185, 129, 0.3);
  background: rgba(16, 185, 129, 0.05);
}
.nav-links a[href="index.php"].nav-link:hover, 
.nav-links a[href="index.php"].nav-link.current {
  background: var(--success);
  color: #fff;
  border-color: var(--success);
  box-shadow: 0 4px 10px rgba(16, 185, 129, 0.2);
}

/* Track Button (Orange Theme) */
.nav-links a[href="track.php"].nav-link {
  color: var(--warning);
  border-color: rgba(245, 158, 11, 0.3);
  background: rgba(245, 158, 11, 0.05);
}
.nav-links a[href="track.php"].nav-link:hover, 
.nav-links a[href="track.php"].nav-link.current {
  background: var(--warning);
  color: #fff;
  border-color: var(--warning);
  box-shadow: 0 4px 10px rgba(245, 158, 11, 0.2);
}

.nav-links a.nav-link::after {
  display: none;
}

/* ─────────────────────────────────────────────────────
   HERO SECTION
   ───────────────────────────────────────────────────── */
.hero-section {
  background: linear-gradient(180deg, #EBF1FA 0%, #F8FAFC 100%);
  position: relative;
  overflow: hidden;
  padding: var(--space-16) var(--space-4) var(--space-12);
  text-align: center;
  border-bottom: 1px solid var(--border);
}

/* Decorative subtle grid */
.hero-section::before {
  display: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
  margin: 0 auto;
}

.hero-title {
  font-size: clamp(2.25rem, 5vw, 3rem);
  font-weight: 700;
  color: var(--primary);
  margin-bottom: var(--space-4);
  line-height: 1.2;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto var(--space-8);
}

.hero-ctas {
  display: flex;
  justify-content: center;
  gap: var(--space-3);
  margin-bottom: var(--space-12);
}

/* Stats Row */
.hero-stats {
  display: flex;
  justify-content: center;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: var(--space-3) var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 140px;
  justify-content: center;
}

.stat-card i {
  font-size: 1.5rem;
  color: var(--gold);
}

.stat-info {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1.2;
}

.stat-num {
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--accent);
}

.stat-lbl {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
}

/* ─────────────────────────────────────────────────────
   TRUST INDICATORS
   ───────────────────────────────────────────────────── */
.trust-bar {
  padding: var(--space-8) 0;
  margin-top: -32px;
  position: relative;
  z-index: 10;
}

.trust-wrap {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-4);
  padding: 0 var(--space-4);
}

.trust-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: var(--space-4);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  color: var(--text-secondary);
  font-size: 1rem;
  font-weight: 600;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
  transition: all 0.2s ease;
}

.trust-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.08);
  border-color: var(--accent);
}

.trust-item i {
  color: var(--gold);
  font-size: 1.5rem;
}

/* ─────────────────────────────────────────────────────
   BUTTONS
   ───────────────────────────────────────────────────── */
.pbtn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  height: 52px;
  padding: 0 var(--space-8);
  border-radius: 8px;
  font-weight: 600;
  font-size: 1.05rem;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.pbtn i {
  font-size: 1.25rem;
}

.pbtn-primary {
  background: linear-gradient(135deg, var(--accent), #1d4ed8);
  color: #fff;
  border: none;
  box-shadow: 0 4px 12px rgba(37,99,235,0.2);
}
.pbtn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(37,99,235,0.3);
}

.pbtn-secondary {
  background-color: #fff;
  color: var(--text-secondary);
  border: 2px solid var(--border);
  box-shadow: 0 2px 6px rgba(0,0,0,0.02);
}
.pbtn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
  background-color: rgba(37,99,235,0.03);
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(37,99,235,0.1);
}

.pbtn-ghost {
  background-color: transparent;
  color: var(--text-secondary);
  border: 1.5px solid transparent;
}
.pbtn-ghost:hover {
  background-color: var(--bg-page);
  color: var(--text-primary);
}

.pbtn-danger {
  background-color: var(--danger);
  color: #fff;
}
.pbtn-danger:hover {
  background-color: #dc2626;
}

.pbtn-sm {
  height: 38px;
  padding: 0 var(--space-4);
  font-size: 0.875rem;
}

.pbtn-full {
  width: 100%;
}

/* ─────────────────────────────────────────────────────
   CARDS
   ───────────────────────────────────────────────────── */
.gcard {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: all 0.2s ease;
  box-shadow: none;
}

.gcard:hover {
  border-color: var(--accent);
  box-shadow: 0 4px 20px rgba(37, 99, 235, 0.08);
}

.gcard-body {
  padding: var(--space-6);
}

.gcard-header {
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--border);
  background: #FAFBFC;
}

/* ─────────────────────────────────────────────────────
   FORM ELEMENTS
   ───────────────────────────────────────────────────── */
.pgroup {
  margin-bottom: var(--space-4);
}

.plabel {
  display: block;
  font-weight: 500;
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
}
.plabel .req {
  color: var(--danger);
}

.pinput {
  width: 100%;
  height: 44px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  padding: 0 var(--space-3);
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--text-primary);
  background: var(--bg-card);
  transition: all 0.2s ease;
}

.pinput::placeholder {
  color: var(--text-muted);
  font-style: normal;
}

.pinput:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

textarea.pinput {
  height: auto;
  min-height: 100px;
  padding: var(--space-3);
}

.phint {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: var(--space-1);
}

/* ─────────────────────────────────────────────────────
   BADGES & PILLS
   ───────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 2px var(--space-2);
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  white-space: nowrap;
}

.badge i {
  font-size: 1rem;
}

.badge-success { background: rgba(16, 185, 129, 0.1); color: var(--success); }
.badge-danger  { background: rgba(239, 68, 68, 0.1); color: var(--danger); }
.badge-warning { background: rgba(245, 158, 11, 0.1); color: var(--warning); }
.badge-info    { background: rgba(14, 165, 233, 0.1); color: var(--sky); }
.badge-primary { background: rgba(37, 99, 235, 0.1); color: var(--accent); }

/* Status Pills (Track page) */
.spill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 600;
  border: 1.5px solid transparent;
}
.sp-new       { background: rgba(14, 165, 233, 0.1); color: var(--sky); border-color: rgba(14, 165, 233, 0.2); }
.sp-pending   { background: rgba(245, 158, 11, 0.1); color: var(--warning); border-color: rgba(245, 158, 11, 0.2); }
.sp-review    { background: rgba(240, 165, 0, 0.1); color: var(--gold); border-color: rgba(240, 165, 0, 0.2); }
.sp-danger    { background: rgba(239, 68, 68, 0.1); color: var(--danger); border-color: rgba(239, 68, 68, 0.2); }
.sp-confirmed { background: rgba(16, 185, 129, 0.1); color: var(--success); border-color: rgba(16, 185, 129, 0.2); }

/* ─────────────────────────────────────────────────────
   PAGE HEADERS (Eyebrow)
   ───────────────────────────────────────────────────── */
.page-eyebrow {
  text-align: center;
  margin-bottom: var(--space-8);
  padding-top: var(--space-4);
}

.ico-wrap {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-4);
  background: var(--bg-card);
  border: 1px solid var(--border);
  box-shadow: 0 4px 12px rgba(0,0,0,0.02);
}

.ico-wrap i {
  font-size: 1.75rem;
}

.ico-blue i { color: var(--accent); }
.ico-red i { color: var(--danger); }
.ico-green i { color: var(--success); }

.page-eyebrow h1 {
  font-size: 1.75rem;
  margin-bottom: var(--space-2);
}
.page-eyebrow p.sub {
  color: var(--text-secondary);
  font-size: 1rem;
}

/* ─────────────────────────────────────────────────────
   STEPPER
   ───────────────────────────────────────────────────── */
.stepper {
  display: flex;
  justify-content: space-between;
  position: relative;
  margin-bottom: var(--space-8);
  padding: 0;
}
.stepper::before {
  content: '';
  position: absolute;
  top: 15px;
  left: 20px;
  right: 20px;
  height: 2px;
  background: var(--border);
  z-index: 1;
}

.s-item {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  color: var(--text-muted);
  flex: 1;
}

.s-dot {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-family: var(--font-num);
  font-size: 0.875rem;
  transition: all 0.2s ease;
}

.s-lbl {
  font-size: 0.75rem;
  font-weight: 600;
}

.s-active .s-dot {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}
.s-active .s-lbl {
  color: var(--primary);
}

.s-done .s-dot {
  border-color: var(--success);
  background: var(--success);
  color: #fff;
}
.s-done .s-lbl {
  color: var(--text-secondary);
}

.sp { display: none; }
.sp-active { display: block; animation: fade 0.3s ease; }
@keyframes fade { from{opacity:0;transform:translateY(10px)} to{opacity:1;transform:translateY(0)} }

.sp-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--border);
}

.sp-foot {
  display: flex;
  justify-content: space-between;
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--border);
}

/* Selection Cards (Grade/Group) */
.grade-list, .group-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.grade-item, .group-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border: 1.5px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  background: var(--bg-card);
  transition: all 0.2s ease;
}
.grade-item:hover, .group-item:hover {
  border-color: var(--accent);
}

.grade-item input, .group-item input {
  display: none;
}

.gi-radio {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 1.5px solid var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.gi-check {
  display: none;
  font-size: 0.8rem;
}

.gi-sel {
  border-color: var(--accent);
  background: rgba(37, 99, 235, 0.03);
}
.gi-sel .gi-radio {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}
.gi-sel .gi-radio .gi-check {
  display: block;
}

.gi-name, .grp-name {
  font-weight: 600;
  font-size: 1rem;
  flex-grow: 1;
}

.grp-time {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-family: var(--font-num);
}

/* ─────────────────────────────────────────────────────
   ALERTS / NOTIFICATIONS
   ───────────────────────────────────────────────────── */
.palert {
  padding: var(--space-4);
  border-radius: 8px;
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  font-size: 0.95rem;
  line-height: 1.5;
  border: 1px solid transparent;
}
.palert i { font-size: 1.25rem; margin-top: 2px; }

.palert-ok {
  background: rgba(16, 185, 129, 0.08);
  border-color: rgba(16, 185, 129, 0.2);
  color: var(--success);
}
.palert-err {
  background: rgba(239, 68, 68, 0.08);
  border-color: rgba(239, 68, 68, 0.2);
  color: var(--danger);
}
.palert-warn {
  background: rgba(245, 158, 11, 0.08);
  border-color: rgba(245, 158, 11, 0.2);
  color: var(--warning);
}

/* ─────────────────────────────────────────────────────
   DATA LIST (Track Page)
   ───────────────────────────────────────────────────── */
.dlist {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-card);
}
.drow {
  display: flex;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px dashed var(--border);
}
.drow:last-child {
  border-bottom: none;
}
.dlabel {
  color: var(--text-secondary);
  font-size: 0.95rem;
}
.dvalue {
  font-weight: 600;
  color: var(--primary);
  text-align: left;
}
.drow-total {
  background-color: #F8FAFC;
  border-radius: 0 0 8px 8px;
  border-bottom: none;
}

/* ─────────────────────────────────────────────────────
   RATING STARS
   ───────────────────────────────────────────────────── */
.rating-stars {
  color: var(--gold);
  letter-spacing: 2px;
  font-size: 1rem;
}

/* UPLOAD ZONE */
.uzone { border: 2px dashed var(--border); border-radius: 12px; padding: var(--space-8); text-align: center; cursor: pointer; transition: all 0.2s; background: var(--bg-page); }
.uzone:hover, .uzone.dragover { border-color: var(--accent); background: rgba(37, 99, 235, 0.03); }
.uzone input[type='file'] { display: none; }
.u-ico { font-size: 2.5rem; color: var(--accent); margin-bottom: var(--space-3); display: block; }
.u-title { font-size: 1.1rem; font-weight: 600; color: var(--primary); }
.u-sub { font-size: 0.9rem; color: var(--text-secondary); }
#preview_image { max-width: 100%; max-height: 300px; display: none; margin: var(--space-4) auto 0; border-radius: 8px; border: 1px solid var(--border); }
/* PAY GRID */
.pay-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: var(--space-4); }
.pay-card { border: 1px solid var(--border); border-radius: 8px; padding: var(--space-4); background: var(--bg-page); }
.pay-card h4 { margin-bottom: var(--space-2); color: var(--primary); display:flex; align-items:center; gap:8px; font-size:1rem; }
.pay-card p { font-size: 0.9rem; color: var(--text-secondary); white-space: pre-wrap; }

/* ─────────────────────────────────────────────────────
   MOBILE RESPONSIVENESS
   ───────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .pub-nav {
    height: auto;
    min-height: 64px;
    flex-direction: column;
    padding: 12px 16px;
    gap: 12px;
  }
  
  .nav-brand {
    width: 100%;
    justify-content: center;
    font-size: 1.15rem;
  }
  
  .nav-brand .b-name {
    white-space: nowrap;
  }
  
  .nav-links {
    width: 100%;
    justify-content: center;
    gap: 8px;
    flex-wrap: nowrap;
  }
  
  .nav-links a.nav-link {
    font-size: 0.85rem;
    white-space: nowrap;
  }
  
  .nav-links .pbtn-sm {
    font-size: 0.8rem;
    padding: 0 10px;
    white-space: nowrap;
  }
  
  .hero-h1 {
    font-size: clamp(2.2rem, 9.5vw, 2.8rem) !important;
    line-height: 1.5 !important;
    margin-bottom: 20px !important;
  }
  
  .hero-h1 .gradient-text {
    font-size: clamp(1.9rem, 8vw, 2.4rem) !important;
    margin-top: 20px !important;
    white-space: pre-wrap !important;
    word-break: keep-all !important;
  }
  
  .hero-actions {
    display: flex;
    flex-wrap: nowrap;
    gap: 10px;
    width: 100%;
  }
  
  .btn-super, .btn-outline-super {
    flex: 1;
    height: 54px;
    padding: 0 8px;
    font-size: 0.95rem;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
  }
  .btn-super i, .btn-outline-super i {
    margin: 0 0 0 4px;
    font-size: 1.15rem;
    flex-shrink: 0;
  }
}