/*
 * shineneet.css
 * Shared design system for ShineNEET
 * Used by: landing page, trial dashboard, login, all Yii2 views
 * ─────────────────────────────────────────────────────────────
 */

/* ════════════════════════════════════════
   1. DESIGN TOKENS (CSS Variables)
════════════════════════════════════════ */
:root {
  /* Brand colours */
  --sn-blue:          #2d3fd4;
  --sn-blue-dark:     #1a2db0;
  --sn-blue-deep:     #132490;
  --sn-blue-light:    #eef1fb;
  --sn-orange:        #f47221;
  --sn-orange-dark:   #d9610d;
  --sn-yellow:        #f5c400;

  /* Page palette */
  --sn-bg:            #f4f6fb;
  --sn-surface:       #ffffff;
  --sn-surface-2:     #eef1f8;
  --sn-border:        #dde3f0;
  --sn-border-hover:  #b8c4df;

  /* Typography */
  --sn-text:          #0d1b3e;
  --sn-text-muted:    #5a6a8a;
  --sn-text-light:    #8fa0bf;

  /* Semantic */
  --sn-error:         #dc2626;
  --sn-error-bg:      #fef2f2;
  --sn-error-border:  #fca5a5;
  --sn-success:       #059669;
  --sn-success-bg:    #ecfdf5;
  --sn-success-border:#6ee7b7;
  --sn-warning:       #b45309;
  --sn-warning-bg:    #fffbeb;
  --sn-warning-border:#fde68a;

  /* Subject colours */
  --sn-physics:       #0891b2;
  --sn-physics-bg:    #ecfeff;
  --sn-physics-bd:    #a5f3fc;
  --sn-chemistry:     #7c3aed;
  --sn-chemistry-bg:  #f5f3ff;
  --sn-chemistry-bd:  #ddd6fe;
  --sn-biology:       #059669;
  --sn-biology-bg:    #ecfdf5;
  --sn-biology-bd:    #6ee7b7;

  /* Radius */
  --sn-radius-xs:     4px;
  --sn-radius-sm:     8px;
  --sn-radius:        12px;
  --sn-radius-lg:     18px;

  /* Nav height (used for offset calculations) */
  --sn-nav-h:         66px;
}

/* ════════════════════════════════════════
   2. RESET & BASE
════════════════════════════════════════ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--sn-bg);
  color: var(--sn-text);
  font-size: 14px;
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main, .sn-main { flex: 1; }

img { max-width: 100%; display: block; }

a { color: var(--sn-blue); }

/* ════════════════════════════════════════
   3. NAVIGATION
════════════════════════════════════════ */
.sn-nav {
  position: sticky;
  top: 0;
  z-index: 200;
  background: var(--sn-surface);
  border-bottom: 1px solid var(--sn-border);
  height: var(--sn-nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2.5rem;
  box-shadow: 0 1px 4px rgba(45, 63, 212, 0.06);
}

.sn-nav__logo {
  font-size: 1.3rem;
  font-weight: 900;
  color: var(--sn-blue);
  text-decoration: none;
  letter-spacing: -0.03em;
  flex-shrink: 0;
}

.sn-nav__links {
  display: flex;
  gap: 0.25rem;
  list-style: none;
  align-items: center;
}

.sn-nav__links a {
  color: var(--sn-text-muted);
  text-decoration: none;
  font-size: 0.8125rem;
  font-weight: 500;
  padding: 0.45rem 0.9rem;
  border-radius: var(--sn-radius-sm);
  transition: color 0.15s, background 0.15s;
  white-space: nowrap;
}

.sn-nav__links a:hover  { color: var(--sn-blue); background: var(--sn-blue-light); }
.sn-nav__links a.active { color: var(--sn-blue); background: var(--sn-blue-light); font-weight: 700; }

/* ════════════════════════════════════════
   4. BUTTONS
════════════════════════════════════════ */

/* Primary — Orange (matches landing page CTA) */
.sn-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  font-family: inherit;
  font-weight: 700;
  font-size: 0.875rem;
  padding: 0.65rem 1.4rem;
  border-radius: var(--sn-radius-sm);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s, transform 0.15s, box-shadow 0.15s;
  white-space: nowrap;
  line-height: 1;
}

.sn-btn--orange {
  background: var(--sn-orange);
  color: #fff;
  box-shadow: 0 3px 12px rgba(244, 114, 33, 0.35);
}

.sn-btn--orange:hover {
  background: var(--sn-orange-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(244, 114, 33, 0.4);
  color: #fff;
}

.sn-btn--orange:active { transform: translateY(0); }

/* Secondary — Blue */
.sn-btn--blue {
  background: var(--sn-blue);
  color: #fff;
  box-shadow: 0 3px 12px rgba(45, 63, 212, 0.25);
}

.sn-btn--blue:hover {
  background: var(--sn-blue-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(45, 63, 212, 0.35);
  color: #fff;
}

/* Ghost on dark bg (used inside blue banners) */
.sn-btn--ghost-white {
  background: transparent;
  color: rgba(255, 255, 255, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.sn-btn--ghost-white:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.5);
  color: #fff;
}

/* Ghost on light bg */
.sn-btn--ghost {
  background: transparent;
  color: var(--sn-text-muted);
  border: 1px solid var(--sn-border);
}

.sn-btn--ghost:hover {
  color: var(--sn-blue);
  border-color: var(--sn-blue);
  background: var(--sn-blue-light);
}

/* Size modifiers */
.sn-btn--sm { font-size: 0.8rem;  padding: 0.45rem 1rem; }
.sn-btn--lg { font-size: 1rem;    padding: 0.8rem 1.75rem; }
.sn-btn--full { width: 100%; }

/* Nav CTA — orange pill in navbar */
.sn-nav__cta {
  background: var(--sn-orange) !important;
  color: #fff !important;
  font-weight: 700 !important;
  font-size: 0.8125rem !important;
  padding: 0.5rem 1.25rem !important;
  border-radius: var(--sn-radius-sm) !important;
  transition: background 0.15s, transform 0.15s, box-shadow 0.15s !important;
  text-decoration: none;
}

.sn-nav__cta:hover {
  background: var(--sn-orange-dark) !important;
  transform: translateY(-1px) !important;
  box-shadow: 0 4px 14px rgba(244, 114, 33, 0.35) !important;
  color: #fff !important;
}

/* ════════════════════════════════════════
   5. HAMBURGER + MOBILE DRAWER
════════════════════════════════════════ */
.sn-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: 1px solid var(--sn-border);
  border-radius: var(--sn-radius-sm);
  cursor: pointer;
  padding: 7px 8px;
  transition: border-color 0.15s;
  flex-shrink: 0;
}

.sn-hamburger:hover { border-color: var(--sn-blue); }

.sn-hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--sn-text);
  border-radius: 2px;
  transition: all 0.25s ease;
  transform-origin: center;
}

.sn-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.sn-hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.sn-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.sn-mobile-menu {
  display: none;
  position: fixed;
  top: var(--sn-nav-h);
  left: 0; right: 0;
  background: var(--sn-surface);
  border-bottom: 1px solid var(--sn-border);
  box-shadow: 0 8px 24px rgba(13, 27, 62, 0.1);
  z-index: 199;
  padding: 1rem 1.5rem 1.5rem;
  flex-direction: column;
  gap: 0.25rem;
  animation: sn-slide-down 0.2s ease both;
}

.sn-mobile-menu.open { display: flex; }

.sn-mobile-menu a {
  display: block;
  color: var(--sn-text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.65rem 0.75rem;
  border-radius: var(--sn-radius-sm);
  transition: all 0.15s;
}

.sn-mobile-menu a:hover  { background: var(--sn-surface-2); color: var(--sn-blue); }
.sn-mobile-menu a.active { background: var(--sn-blue-light); color: var(--sn-blue); font-weight: 700; }

.sn-mobile-menu .sn-mob-cta {
  text-align: center;
  background: var(--sn-orange) !important;
  color: #fff !important;
  font-weight: 700 !important;
  border-radius: var(--sn-radius-sm) !important;
  padding: 0.75rem !important;
  margin-top: 0.5rem;
  box-shadow: 0 3px 10px rgba(244, 114, 33, 0.3);
}

.sn-mobile-menu .sn-mob-cta:hover { background: var(--sn-orange-dark) !important; }

/* ════════════════════════════════════════
   6. LAYOUT CONTAINERS
════════════════════════════════════════ */
.sn-container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 2rem 1.75rem 5rem;
}

.sn-container--sm {
  max-width: 680px;
  margin: 0 auto;
  padding: 2rem 1.75rem;
}

/* ════════════════════════════════════════
   7. CARDS
════════════════════════════════════════ */
.sn-card {
  background: var(--sn-surface);
  border: 1px solid var(--sn-border);
  border-radius: var(--sn-radius);
  padding: 1.5rem;
  transition: box-shadow 0.15s, border-color 0.15s, transform 0.15s;
}

.sn-card:hover {
  box-shadow: 0 4px 18px rgba(45, 63, 212, 0.08);
  border-color: var(--sn-border-hover);
}

.sn-card--hover:hover { transform: translateY(-2px); }

/* ════════════════════════════════════════
   8. BLUE BANNER (hero / welcome strip)
════════════════════════════════════════ */
.sn-banner {
  background: linear-gradient(135deg, var(--sn-blue) 0%, var(--sn-blue-dark) 55%, var(--sn-blue-deep) 100%);
  border-radius: var(--sn-radius-lg);
  padding: 2.25rem 2.75rem;
  position: relative;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(45, 63, 212, 0.28);
}

.sn-banner::before {
  content: '';
  position: absolute;
  right: -50px; top: -60px;
  width: 240px; height: 240px;
  background: rgba(255,255,255,0.05);
  border-radius: 50%;
  pointer-events: none;
}

.sn-banner::after {
  content: '';
  position: absolute;
  right: 120px; bottom: -80px;
  width: 180px; height: 180px;
  background: rgba(255,255,255,0.04);
  border-radius: 50%;
  pointer-events: none;
}

.sn-banner__title {
  font-size: 1.55rem;
  font-weight: 900;
  color: #fff;
  line-height: 1.25;
  letter-spacing: -0.025em;
  margin-bottom: 0.5rem;
}

.sn-banner__title .sn-yellow { color: var(--sn-yellow); }

.sn-banner__sub {
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.875rem;
  line-height: 1.7;
  max-width: 460px;
}

/* ════════════════════════════════════════
   9. FORM ELEMENTS
════════════════════════════════════════ */
.sn-form-group { margin-bottom: 1.25rem; }

.sn-label {
  display: block;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--sn-text);
  letter-spacing: 0.01em;
  margin-bottom: 0.45rem;
}

.sn-input-wrap { position: relative; }

.sn-input {
  width: 100%;
  height: 46px;
  padding: 0 2.75rem 0 0.9rem;
  font-family: inherit;
  font-size: 0.875rem;
  color: var(--sn-text);
  background: var(--sn-bg);
  border: 1.5px solid var(--sn-border);
  border-radius: var(--sn-radius-sm);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s, background 0.15s;
}

.sn-input::placeholder { color: var(--sn-text-light); }

.sn-input:focus {
  border-color: var(--sn-blue);
  background: var(--sn-surface);
  box-shadow: 0 0 0 3px rgba(45, 63, 212, 0.1);
}

.sn-input--error {
  border-color: var(--sn-error) !important;
  background: var(--sn-error-bg) !important;
}

.sn-input--error:focus {
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1) !important;
}

.sn-field-error {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--sn-error);
  margin-top: 0.35rem;
}

/* Checkbox */
.sn-checkbox-wrap {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
}

.sn-checkbox-wrap input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 17px; height: 17px;
  flex-shrink: 0;
  border: 1.5px solid var(--sn-border);
  border-radius: var(--sn-radius-xs);
  background: var(--sn-bg);
  cursor: pointer;
  position: relative;
  transition: all 0.15s;
}

.sn-checkbox-wrap input[type="checkbox"]:checked {
  background: var(--sn-blue);
  border-color: var(--sn-blue);
}

.sn-checkbox-wrap input[type="checkbox"]:checked::after {
  content: '';
  position: absolute;
  top: 2px; left: 5px;
  width: 5px; height: 9px;
  border: 2px solid #fff;
  border-top: none; border-left: none;
  transform: rotate(45deg);
}

.sn-checkbox-wrap label {
  font-size: 0.82rem;
  color: var(--sn-text-muted);
  cursor: pointer;
  user-select: none;
}

/* Password toggle button */
.sn-pw-toggle {
  position: absolute;
  right: 0.75rem; top: 50%;
  transform: translateY(-50%);
  background: none; border: none;
  cursor: pointer; padding: 0.25rem;
  color: var(--sn-text-light);
  display: flex; align-items: center;
  transition: color 0.15s;
  border-radius: var(--sn-radius-xs);
}

.sn-pw-toggle:hover { color: var(--sn-blue); }

/* ════════════════════════════════════════
   10. BADGES & CHIPS
════════════════════════════════════════ */
.sn-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.2rem;
  font-size: 0.64rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.22rem 0.65rem;
  border-radius: 20px;
}

.sn-chip--orange { background: #fff5ee; color: var(--sn-orange);   border: 1px solid #fdd0b0; }
.sn-chip--blue   { background: var(--sn-blue-light); color: var(--sn-blue); border: 1px solid #c7d2f8; }
.sn-chip--green  { background: var(--sn-success-bg); color: var(--sn-success); border: 1px solid var(--sn-success-border); }
.sn-chip--yellow { background: var(--sn-warning-bg); color: var(--sn-warning); border: 1px solid var(--sn-warning-border); }

.sn-badge-new {
  display: inline-block;
  font-size: 0.58rem; font-weight: 800;
  text-transform: uppercase; letter-spacing: 0.06em;
  padding: 0.1rem 0.4rem;
  border-radius: var(--sn-radius-xs);
  background: var(--sn-warning-bg);
  color: var(--sn-warning);
  border: 1px solid var(--sn-warning-border);
  vertical-align: middle;
  margin-left: 0.3rem;
}

/* ════════════════════════════════════════
   11. SECTION HEADERS
════════════════════════════════════════ */
.sn-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.sn-section-title {
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--sn-text);
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.sn-info-badge {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.7rem; font-weight: 500;
  color: var(--sn-text-muted);
  background: var(--sn-surface);
  border: 1px solid var(--sn-border);
  padding: 0.22rem 0.65rem;
  border-radius: 20px;
  cursor: help;
  transition: border-color 0.15s;
}

.sn-info-badge:hover { border-color: var(--sn-blue); color: var(--sn-blue); }

/* ════════════════════════════════════════
   12. DIVIDER
════════════════════════════════════════ */
.sn-divider {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--sn-text-light);
  font-size: 0.75rem;
  margin: 1.25rem 0;
}

.sn-divider::before,
.sn-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--sn-border);
}

/* ════════════════════════════════════════
   13. TRUST ROW
════════════════════════════════════════ */
.sn-trust-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  flex-wrap: wrap;
  padding-top: 1.25rem;
  border-top: 1px solid var(--sn-border);
  margin-top: 1.5rem;
}

.sn-trust-item {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.72rem;
  color: var(--sn-text-muted);
  font-weight: 500;
}

/* ════════════════════════════════════════
   14. FOOTER
════════════════════════════════════════ */
.sn-footer {
  border-top: 1px solid var(--sn-border);
  background: var(--sn-surface);
  padding: 1.5rem 2.5rem;
  margin-top: auto;
}

.sn-footer__inner {
  max-width: 1120px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.sn-footer__brand {
  font-size: 0.78rem;
  color: var(--sn-text-muted);
}

.sn-footer__brand strong { color: var(--sn-blue); font-weight: 800; }

.sn-footer__links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  flex-wrap: wrap;
}

.sn-footer__links a {
  font-size: 0.775rem;
  color: var(--sn-text-muted);
  text-decoration: none;
  transition: color 0.15s;
}

.sn-footer__links a:hover { color: var(--sn-blue); }

/* ════════════════════════════════════════
   15. ANIMATIONS
════════════════════════════════════════ */
@keyframes sn-fade-up {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes sn-slide-down {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.sn-animate { animation: sn-fade-up 0.45s ease both; }
.sn-animate-1 { animation: sn-fade-up 0.45s 0.08s ease both; }
.sn-animate-2 { animation: sn-fade-up 0.45s 0.16s ease both; }
.sn-animate-3 { animation: sn-fade-up 0.45s 0.24s ease both; }

/* ════════════════════════════════════════
   16. RESPONSIVE BREAKPOINTS
════════════════════════════════════════ */
@media (max-width: 900px) {
  .sn-nav         { padding: 0 1.25rem; }
  .sn-nav__links  { display: none; }
  .sn-hamburger   { display: flex; }
  .sn-container   { padding: 1.5rem 1.25rem 4rem; }
  .sn-footer      { padding: 1.25rem 1.25rem; }
}

@media (max-width: 480px) {
  .sn-nav       { padding: 0 1rem; }
  .sn-container { padding: 1.25rem 1rem 3rem; }
  .sn-footer    { padding: 1rem; }
  .sn-footer__inner { flex-direction: column; align-items: flex-start; gap: 1rem; }
}