/* ========================================================================
   CHEMISTRY CODE — PREMIUM UI OVERRIDE
   Version: 1.0 | Load this file LAST, after all existing page styles.
   Purpose: consistent premium design, better mobile/RTL behavior,
            stronger focus states, cleaner cards/forms and safer motion.
   ======================================================================== */

/* ---------- Design system ------------------------------------------------ */
:root {
  color-scheme: dark;

  --cc-bg-950: #050914;
  --cc-bg-900: #08111f;
  --cc-bg-850: #0b1729;
  --cc-bg-800: #102039;
  --cc-panel: rgba(13, 28, 50, 0.78);
  --cc-panel-strong: rgba(15, 31, 55, 0.94);
  --cc-panel-soft: rgba(255, 255, 255, 0.045);

  --cc-text: #f4f8ff;
  --cc-text-soft: #d7e2f1;
  --cc-muted: #9eacc0;
  --cc-dim: #728198;

  --cc-sky: #39c6ff;
  --cc-sky-2: #69ddff;
  --cc-blue: #5d7cff;
  --cc-violet: #9d7bff;
  --cc-gold: #ffd24a;
  --cc-gold-2: #ffb82e;
  --cc-green: #35d39a;
  --cc-red: #ff7085;

  --cc-line: rgba(130, 205, 255, 0.18);
  --cc-line-strong: rgba(98, 212, 255, 0.42);
  --cc-gold-line: rgba(255, 210, 74, 0.34);

  --cc-shadow-xs: 0 5px 18px rgba(0, 0, 0, 0.18);

  --cc-gradient-action: linear-gradient(135deg, var(--cc-sky), var(--cc-violet));
  --cc-shadow-sm: 0 12px 30px rgba(0, 0, 0, 0.24);
  --cc-shadow-md: 0 22px 55px rgba(0, 0, 0, 0.34);
  --cc-shadow-glow: 0 0 0 1px rgba(57, 198, 255, 0.10),
                    0 20px 55px rgba(15, 119, 188, 0.22);

  --cc-r-xs: 8px;
  --cc-r-sm: 12px;
  --cc-r-md: 18px;
  --cc-r-lg: 24px;
  --cc-r-xl: 32px;
  --cc-r-pill: 999px;

  --cc-content: 1180px;
  --cc-reading: 760px;
  --cc-header-h: 76px;

  --cc-ease: cubic-bezier(.2, .8, .2, 1);
  --cc-fast: 150ms;
  --cc-normal: 240ms;

  /* Aliases used by the current site CSS. */
  --am-bg: var(--cc-bg-950);
  --am-panel: var(--cc-panel);
  --am-panel-2: var(--cc-panel-strong);
  --am-text: var(--cc-text);
  --am-muted: var(--cc-muted);
  --am-sky: var(--cc-sky);
  --am-gold: var(--cc-gold);
  --am-green: var(--cc-green);
  --am-red: var(--cc-red);
  --am-line: var(--cc-line);
  --am-shadow: var(--cc-shadow-md);
}

/* ---------- Reset and page foundation ----------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  width: 100%;
  min-width: 0;
  margin: 0;
  scroll-behavior: smooth;
  scrollbar-gutter: stable;
  background: var(--cc-bg-950);
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  width: 100%;
  min-width: 0;
  max-width: 100%;
  min-height: 100vh;
  margin: 0 !important;
  overflow-x: clip;
  color: var(--cc-text);
  background:
    radial-gradient(circle at 9% 5%, rgba(57, 198, 255, 0.11), transparent 28rem),
    radial-gradient(circle at 91% 11%, rgba(157, 123, 255, 0.10), transparent 30rem),
    radial-gradient(circle at 50% 95%, rgba(255, 210, 74, 0.06), transparent 32rem),
    linear-gradient(180deg, var(--cc-bg-950), var(--cc-bg-900) 48%, #070d18);
  font-family: Inter, Cairo, "Segoe UI", Tahoma, Arial, sans-serif;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

/* Legacy branded pages reserve space for a fixed header. The new header is
   sticky and participates in layout, so that old spacer must be removed. */
body.am-branded {
  padding-top: 0 !important;
}

/* Hub pages (chapters / qbank / lectures / games) already have their own
   header (top-nav / nav-brand): their am-brandbar is a photo+name strip,
   not navigation. Skip the floating glass treatment there so two headers
   never stack. */
.am-brandbar:not(:has(.am-nav-links, .menu-toggle, .nav-links)) {
  position: static !important;
  inset-block-start: auto !important;
  width: 100% !important;
  max-width: 100% !important;
  margin: 0 auto !important;
  border: 0 !important;
  border-radius: 0 !important;
  background: none !important;
  box-shadow: none !important;
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  opacity: 0.25;
  background-image:
    linear-gradient(rgba(255,255,255,.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.018) 1px, transparent 1px);
  background-size: 38px 38px;
  mask-image: linear-gradient(to bottom, black, transparent 76%);
  -webkit-mask-image: linear-gradient(to bottom, black, transparent 76%);
}

body,
main,
section,
header,
footer,
nav,
form,
.auth-page,
.auth-box,
.book-wrap,
.book-card,
.pricing-grid,
.form-row,
.form-group,
.hm-grid,
.hub-wrap,
.comp,
.lec {
  min-width: 0;
}

img,
svg,
video,
canvas,
iframe {
  max-width: 100%;
}

img,
video {
  height: auto;
}

iframe {
  border: 0;
}

button,
input,
select,
textarea {
  max-width: 100%;
  font: inherit;
}

button,
a,
input,
select,
textarea {
  -webkit-tap-highlight-color: transparent;
}

a {
  color: var(--cc-sky-2);
  text-decoration-thickness: 1.5px;
  text-underline-offset: 0.2em;
}

a:hover {
  color: #fff;
}

::selection {
  color: #06101d;
  background: var(--cc-gold);
}

::placeholder {
  color: #74839a;
  opacity: 1;
}

:where(a, button, input, select, textarea, [tabindex]):focus-visible {
  outline: 3px solid var(--cc-gold) !important;
  outline-offset: 3px !important;
  box-shadow: 0 0 0 6px rgba(255, 210, 74, 0.16) !important;
}

:where(button, .btn, [role="button"]):disabled,
:where(button, .btn, [role="button"])[aria-disabled="true"],
.disabled {
  cursor: not-allowed !important;
  filter: grayscale(0.35);
  opacity: 0.55 !important;
  transform: none !important;
  box-shadow: none !important;
}

/* Chromium/Firefox scrollbars */
* {
  scrollbar-width: thin;
  scrollbar-color: rgba(86, 199, 255, 0.48) rgba(255, 255, 255, 0.035);
}

*::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

*::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.025);
}

*::-webkit-scrollbar-thumb {
  border: 2px solid transparent;
  border-radius: var(--cc-r-pill);
  background: linear-gradient(var(--cc-sky), var(--cc-blue)) padding-box;
}

/* ---------- Typography --------------------------------------------------- */
h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--cc-text);
  font-family: Outfit, Inter, Cairo, "Segoe UI", sans-serif;
  line-height: 1.18;
  text-wrap: balance;
}

[dir="rtl"] h1,
[dir="rtl"] h2,
[dir="rtl"] h3,
[dir="rtl"] h4,
[dir="rtl"] h5,
[dir="rtl"] h6 {
  font-family: Cairo, Inter, "Segoe UI", sans-serif;
}

p,
li {
  text-wrap: pretty;
}

.page-header h1,
.page-header h2,
.am-pagetitle,
.hm-h1 {
  letter-spacing: -0.035em;
}

[dir="rtl"] .page-header h1,
[dir="rtl"] .page-header h2,
[dir="rtl"] .am-pagetitle,
[dir="rtl"] .hm-h1 {
  letter-spacing: 0;
}

.highlight,
.hm-h1 strong,
.logo-main {
  color: transparent !important;
  background: linear-gradient(110deg, var(--cc-sky-2), #b7eaff 38%, var(--cc-gold) 72%, var(--cc-violet));
  background-clip: text;
  -webkit-background-clip: text;
}

/* ---------- Shared layout helpers --------------------------------------- */
.container,
.hm-main,
.pricing,
.payment-section,
.auth-page,
.book-wrap {
  width: min(100% - 32px, var(--cc-content));
  margin-inline: auto;
}

.hm-sec,
.pricing,
.payment-section,
.auth-page,
.book-wrap {
  scroll-margin-top: calc(var(--cc-header-h) + 28px);
}

/* ---------- Premium navigation ------------------------------------------ */
.am-brandbar {
  position: sticky !important;
  inset-block-start: 10px;
  /* The old pages center this bar with left:50% + translateX(-50%).
     The override uses auto margins, so neutralize the legacy positioning. */
  inset-inline-start: auto !important;
  inset-inline-end: auto !important;
  left: auto !important;
  right: auto !important;
  transform: none !important;
  z-index: 1000 !important;
  width: min(calc(100% - 24px), var(--cc-content)) !important;
  max-width: var(--cc-content) !important;
  min-height: var(--cc-header-h);
  margin: 10px auto 0 !important;
  padding: 10px 14px !important;
  border: 1px solid var(--cc-line-strong) !important;
  border-radius: var(--cc-r-lg) !important;
  background:
    linear-gradient(135deg, rgba(18, 39, 69, 0.90), rgba(9, 20, 37, 0.92)) !important;
  box-shadow: var(--cc-shadow-glow) !important;
  backdrop-filter: blur(18px) saturate(1.25);
  -webkit-backdrop-filter: blur(18px) saturate(1.25);
  isolation: isolate;
}

.am-brandbar::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  border-radius: inherit;
  pointer-events: none;
  background:
    linear-gradient(110deg, rgba(57,198,255,.10), transparent 35%, rgba(255,210,74,.08));
}

.am-logo-wrap,
.am-bnames,
.nav-right,
.am-auth-actions,
.am-lang-buttons {
  min-width: 0;
}

.am-bphoto,
.am-blogo,
.am-blogo-fallback {
  flex: 0 0 auto;
  border: 2px solid rgba(255,255,255,.72) !important;
  box-shadow: 0 0 0 4px rgba(57,198,255,.12), 0 8px 22px rgba(0,0,0,.34) !important;
}

.am-bphoto {
  border-color: var(--cc-gold) !important;
}

/* cc-auth.js injects this session chip after page CSS. Keep it clear of the
   sticky navigation and normalize its late-injected inline stylesheet. */
#ccChip.cc-chip {
  top: auto !important;
  bottom: max(14px, env(safe-area-inset-bottom)) !important;
  z-index: 1100 !important;
}

#ccChip.cc-chip :is(a, button) {
  border-color: var(--cc-line-strong) !important;
  background: rgba(9, 20, 37, .92) !important;
  color: var(--cc-text) !important;
  box-shadow: var(--cc-shadow-sm) !important;
  backdrop-filter: blur(14px);
}

#ccChip.cc-chip .cc-in {
  border-color: transparent !important;
  color: #07111f !important;
  background: var(--cc-gradient-action) !important;
}

/* The WhatsApp control uses the page-end side; put the account chip on the
   opposite side so the two controls never cover each other. */
html:not([dir="rtl"]) #ccChip.cc-chip {
  left: 14px !important;
  right: auto !important;
}

html[dir="rtl"] #ccChip.cc-chip {
  right: 14px !important;
  left: auto !important;
}

.am-bnames {
  overflow: hidden;
}

.am-bnames strong,
.am-bnames b {
  overflow: hidden;
  color: var(--cc-text) !important;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.am-nav-links,
.nav-links {
  gap: 6px !important;
  align-items: center;
}

.am-nav-links a,
.nav-links a {
  min-height: 40px;
  padding: 8px 12px !important;
  border: 1px solid transparent !important;
  border-radius: var(--cc-r-pill) !important;
  color: var(--cc-text-soft) !important;
  font-weight: 780 !important;
  line-height: 1.2;
  text-decoration: none;
  transition:
    color var(--cc-fast) ease,
    border-color var(--cc-fast) ease,
    background var(--cc-fast) ease,
    transform var(--cc-fast) var(--cc-ease) !important;
}

.am-nav-links a:hover,
.nav-links a:hover,
.am-nav-links a.active,
.nav-links a.active,
.am-nav-links a[aria-current="page"],
.nav-links a[aria-current="page"] {
  color: #06111e !important;
  border-color: transparent !important;
  background: linear-gradient(135deg, var(--cc-sky-2), var(--cc-gold)) !important;
  box-shadow: 0 8px 20px rgba(57,198,255,.20) !important;
  transform: translateY(-1px);
}

.am-lang-buttons {
  gap: 4px !important;
  padding: 4px !important;
  border: 1px solid var(--cc-line) !important;
  border-radius: var(--cc-r-pill) !important;
  background: rgba(255,255,255,.045) !important;
}

.am-lang-buttons a {
  min-width: 44px;
  min-height: 34px;
  display: inline-grid;
  place-items: center;
  border-radius: var(--cc-r-pill) !important;
  color: var(--cc-text-soft) !important;
  font-weight: 850 !important;
  text-decoration: none;
}

.am-lang-buttons a:hover,
.am-lang-buttons a.active,
.am-lang-buttons a[aria-current="page"] {
  color: #07111e !important;
  background: linear-gradient(135deg, #b9edff, var(--cc-gold)) !important;
}

.menu-toggle {
  min-width: 46px;
  min-height: 46px;
  border: 1px solid var(--cc-line-strong) !important;
  border-radius: 14px !important;
  color: var(--cc-text) !important;
  background: linear-gradient(145deg, rgba(57,198,255,.18), rgba(157,123,255,.18)) !important;
  box-shadow: var(--cc-shadow-xs) !important;
  cursor: pointer;
}

/* ---------- Buttons ------------------------------------------------------ */
.btn,
.hm-btn,
.btn-primary,
.btn-secondary,
.btn-outline,
.btn-orange,
.btn-submit,
.cl-btn,
.nav-back-btn {
  min-height: 46px;
  border-radius: var(--cc-r-sm) !important;
  font-weight: 850 !important;
  letter-spacing: 0.005em;
  text-decoration: none !important;
  transition:
    transform var(--cc-fast) var(--cc-ease),
    box-shadow var(--cc-fast) ease,
    filter var(--cc-fast) ease,
    border-color var(--cc-fast) ease !important;
}

.btn-primary,
.hm-btn:not(.ghost),
.btn-submit {
  border: 1px solid rgba(255,255,255,.30) !important;
  color: #06111e !important;
  background: linear-gradient(135deg, var(--cc-sky), #83dcff 44%, var(--cc-violet)) !important;
  box-shadow: 0 13px 30px rgba(57,198,255,.23) !important;
}

.btn-orange {
  border: 1px solid rgba(255,255,255,.28) !important;
  color: #1a1200 !important;
  background: linear-gradient(135deg, var(--cc-gold), var(--cc-gold-2)) !important;
  box-shadow: 0 13px 30px rgba(255,184,46,.20) !important;
}

.btn-outline,
.btn-secondary,
.hm-btn.ghost,
.nav-back-btn,
.cl-btn {
  border: 1px solid var(--cc-line-strong) !important;
  color: var(--cc-text-soft) !important;
  background: rgba(255,255,255,.045) !important;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.045) !important;
}

:where(.btn,.hm-btn,.btn-primary,.btn-secondary,.btn-outline,.btn-orange,.btn-submit,.cl-btn,.nav-back-btn):hover {
  filter: brightness(1.08) saturate(1.07);
  transform: translateY(-2px);
  box-shadow: var(--cc-shadow-sm) !important;
}

:where(.btn,.hm-btn,.btn-primary,.btn-secondary,.btn-outline,.btn-orange,.btn-submit,.cl-btn,.nav-back-btn):active {
  transform: translateY(0) scale(.985);
}

/* ---------- Branded title cover ----------------------------------------- */
.am-title-cover {
  width: min(calc(100% - 32px), var(--cc-content)) !important;
  max-width: var(--cc-content) !important;
  margin: 28px auto !important;
  padding: clamp(28px, 5vw, 56px) !important;
  overflow: hidden;
  border: 1px solid var(--cc-line) !important;
  border-radius: var(--cc-r-xl) !important;
  background:
    radial-gradient(circle at 15% 0%, rgba(57,198,255,.17), transparent 28rem),
    radial-gradient(circle at 90% 100%, rgba(255,210,74,.11), transparent 24rem),
    linear-gradient(145deg, rgba(18,38,67,.96), rgba(8,17,31,.96)) !important;
  box-shadow: var(--cc-shadow-md) !important;
}

.am-pagetitle,
.page-header h1,
.page-header h2 {
  font-size: clamp(2rem, 5.5vw, 4rem) !important;
}

.am-title-cover .am-pagetitle {
  color: var(--cc-text) !important;
}

.am-title-cover .am-bar {
  color: var(--cc-gold) !important;
}

.am-title-cover .am-ben {
  color: var(--cc-sky-2) !important;
}

.page-header p,
.page-header .subtitle,
.am-title-cover p {
  max-width: 760px;
  margin-inline: auto;
  color: var(--cc-muted) !important;
}

/* ---------- Home page ---------------------------------------------------- */
.hm-main {
  padding-block: 20px 70px;
}

.hm-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(34px, 7vw, 84px) clamp(20px, 6vw, 72px) !important;
  border: 1px solid var(--cc-line) !important;
  border-radius: var(--cc-r-xl) !important;
  background:
    radial-gradient(circle at 8% 10%, rgba(57,198,255,.20), transparent 26rem),
    radial-gradient(circle at 86% 14%, rgba(157,123,255,.16), transparent 28rem),
    linear-gradient(145deg, rgba(16,34,61,.96), rgba(6,14,27,.97)) !important;
  box-shadow: var(--cc-shadow-md) !important;
  isolation: isolate;
}

.hm-hero::after {
  content: "";
  position: absolute;
  inset: auto -8% -45% auto;
  z-index: -1;
  width: 420px;
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,210,74,.12), transparent 68%);
}

.hm-kicker {
  display: inline-flex !important;
  align-items: center;
  gap: 8px;
  padding: 7px 13px !important;
  border: 1px solid var(--cc-line-strong) !important;
  border-radius: var(--cc-r-pill) !important;
  color: var(--cc-sky-2) !important;
  background: rgba(57,198,255,.075) !important;
  font-weight: 850 !important;
}

.hm-h1 {
  max-width: 900px;
  margin: 20px auto 14px !important;
  font-size: clamp(2.5rem, 8vw, 6.1rem) !important;
  line-height: .98 !important;
}

.hm-lead {
  max-width: 790px;
  margin-inline: auto !important;
  color: var(--cc-text-soft) !important;
  font-size: clamp(1rem, 2vw, 1.28rem) !important;
}

.hm-ctas,
.hm-actions {
  gap: 12px !important;
  align-items: stretch;
  justify-content: center;
}

.hm-trust {
  max-width: 860px;
  margin-inline: auto !important;
  color: #b8c7d9 !important;
}

.hm-stats {
  gap: 12px !important;
}

.hm-stat {
  border: 1px solid var(--cc-line) !important;
  border-radius: var(--cc-r-md) !important;
  background: rgba(255,255,255,.038) !important;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.045) !important;
}

.hm-stat strong,
.hm-stat b {
  color: var(--cc-sky-2) !important;
  font-variant-numeric: tabular-nums;
}

.hm-sec {
  padding-block: clamp(45px, 7vw, 84px) !important;
}

.hm-sec-h {
  font-size: clamp(1.75rem, 4vw, 3rem) !important;
}

.hm-sec-p {
  max-width: 720px;
  margin-inline: auto !important;
  color: var(--cc-muted) !important;
}

.hm-grid {
  gap: 16px !important;
}

.hm-card,
.hm-plan,
.hm-ct {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--cc-line) !important;
  border-radius: var(--cc-r-lg) !important;
  background:
    linear-gradient(155deg, rgba(18,39,69,.88), rgba(9,19,35,.90)) !important;
  box-shadow: var(--cc-shadow-sm) !important;
  transition:
    transform var(--cc-normal) var(--cc-ease),
    border-color var(--cc-normal) ease,
    box-shadow var(--cc-normal) ease !important;
}

.hm-card::before,
.hm-plan::before,
.hm-ct::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(110deg, rgba(57,198,255,.08), transparent 38%, rgba(255,210,74,.05));
}

.hm-card:hover,
.hm-plan:hover,
.hm-ct:hover {
  border-color: var(--cc-line-strong) !important;
  transform: translateY(-5px);
  box-shadow: var(--cc-shadow-md) !important;
}

.hm-num,
.hm-ico,
.plan-icon,
.pay-icon {
  border: 1px solid rgba(255,255,255,.13) !important;
  background: linear-gradient(145deg, rgba(57,198,255,.17), rgba(157,123,255,.10)) !important;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.08), var(--cc-shadow-xs) !important;
}

.hm-free,
.popular-badge {
  border: 1px solid rgba(255,210,74,.42) !important;
  color: #211700 !important;
  background: linear-gradient(135deg, #ffe58c, var(--cc-gold)) !important;
}

/* ---------- Pricing and checkout ---------------------------------------- */
.pricing-grid {
  gap: 18px !important;
  align-items: stretch;
}

.price-card {
  position: relative;
  overflow: hidden;
  height: 100%;
  padding: clamp(22px, 3.2vw, 34px) !important;
  border: 1px solid var(--cc-line) !important;
  border-radius: var(--cc-r-lg) !important;
  background:
    linear-gradient(155deg, rgba(17,36,64,.96), rgba(8,18,33,.96)) !important;
  box-shadow: var(--cc-shadow-sm) !important;
  transition:
    transform var(--cc-normal) var(--cc-ease),
    border-color var(--cc-normal) ease,
    box-shadow var(--cc-normal) ease !important;
}

.price-card:hover {
  border-color: var(--cc-line-strong) !important;
  transform: translateY(-7px) !important;
  box-shadow: var(--cc-shadow-md) !important;
}

.price-card.featured {
  border-color: var(--cc-gold-line) !important;
  background:
    radial-gradient(circle at 80% 0%, rgba(255,210,74,.14), transparent 20rem),
    linear-gradient(155deg, rgba(37,34,52,.98), rgba(10,20,34,.98)) !important;
  box-shadow: 0 24px 60px rgba(255,184,46,.13) !important;
}

.price {
  color: var(--cc-sky-2) !important;
  font-variant-numeric: tabular-nums;
}

.price-features {
  display: grid;
  gap: 10px !important;
}

.price-features li {
  color: var(--cc-text-soft) !important;
}

.payment-container,
.order-summary,
.payment-form {
  border: 1px solid var(--cc-line) !important;
  border-radius: var(--cc-r-lg) !important;
  background: linear-gradient(150deg, rgba(15,32,57,.94), rgba(8,17,31,.95)) !important;
  box-shadow: var(--cc-shadow-sm) !important;
}

.payment-methods {
  gap: 12px !important;
}

.payment-method {
  min-height: 132px;
  border: 1px solid var(--cc-line) !important;
  border-radius: var(--cc-r-md) !important;
  background: rgba(255,255,255,.035) !important;
  transition:
    transform var(--cc-fast) var(--cc-ease),
    border-color var(--cc-fast) ease,
    background var(--cc-fast) ease !important;
}

.payment-method:hover {
  border-color: var(--cc-line-strong) !important;
  transform: translateY(-3px);
}

.payment-method.selected,
.payment-method.active,
.payment-method[aria-selected="true"] {
  border-color: var(--cc-sky) !important;
  background: rgba(57,198,255,.10) !important;
  box-shadow: 0 0 0 4px rgba(57,198,255,.10) !important;
}

.order-row.total,
.order-summary .total {
  border-color: var(--cc-gold-line) !important;
  color: var(--cc-gold) !important;
}

/* ---------- Forms, auth and booking ------------------------------------- */
.auth-page,
.book-wrap {
  padding-block: clamp(24px, 5vw, 64px) !important;
}

.auth-box,
.book-card {
  width: min(100%, 760px) !important;
  max-width: 100% !important;
  margin-inline: auto !important;
  padding: clamp(22px, 5vw, 44px) !important;
  overflow: hidden;
  border: 1px solid var(--cc-line) !important;
  border-radius: var(--cc-r-xl) !important;
  background:
    radial-gradient(circle at 5% 0%, rgba(57,198,255,.12), transparent 18rem),
    linear-gradient(150deg, rgba(16,34,60,.96), rgba(7,16,29,.97)) !important;
  box-shadow: var(--cc-shadow-md) !important;
}

.auth-logo,
.book-card .subtitle {
  text-align: center;
}

.form-row {
  display: grid !important;
  grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
  gap: 14px !important;
  width: 100%;
}

.form-group {
  width: 100%;
  margin-bottom: 16px !important;
}

.form-group label,
label[for] {
  display: inline-block;
  margin-bottom: 7px;
  color: var(--cc-text-soft) !important;
  font-weight: 760 !important;
}

.form-group input,
.form-group select,
.form-group textarea,
.auth-box input,
.auth-box select,
.auth-box textarea,
.book-card input,
.book-card select,
.book-card textarea,
.clock-input {
  width: 100% !important;
  min-height: 48px;
  padding: 12px 14px !important;
  border: 1px solid rgba(142,186,225,.23) !important;
  border-radius: var(--cc-r-sm) !important;
  color: var(--cc-text) !important;
  background: rgba(3,10,20,.58) !important;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.035) !important;
  transition:
    border-color var(--cc-fast) ease,
    box-shadow var(--cc-fast) ease,
    background var(--cc-fast) ease !important;
}

.form-group textarea,
.auth-box textarea,
.book-card textarea {
  min-height: 120px;
  resize: vertical;
}

.form-group input:hover,
.form-group select:hover,
.form-group textarea:hover,
.auth-box input:hover,
.auth-box select:hover,
.auth-box textarea:hover,
.book-card input:hover,
.book-card select:hover,
.book-card textarea:hover {
  border-color: rgba(101,211,255,.42) !important;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus,
.auth-box input:focus,
.auth-box select:focus,
.auth-box textarea:focus,
.book-card input:focus,
.book-card select:focus,
.book-card textarea:focus,
.clock-input:focus {
  outline: none !important;
  border-color: var(--cc-sky) !important;
  background: rgba(6,17,31,.82) !important;
  box-shadow: 0 0 0 4px rgba(57,198,255,.12) !important;
}

.form-group.error input,
.form-group.error select,
.form-group.error textarea,
[aria-invalid="true"] {
  border-color: var(--cc-red) !important;
  box-shadow: 0 0 0 4px rgba(255,112,133,.11) !important;
}

.form-error,
.err-msg {
  color: #ff9dad !important;
  font-weight: 700;
}

.remember-row {
  gap: 12px;
  color: var(--cc-text-soft) !important;
}

input[type="checkbox"],
input[type="radio"] {
  accent-color: var(--cc-sky);
}

.course-grid {
  display: grid !important;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 180px), 1fr)) !important;
  gap: 12px !important;
}

.course-card,
.course-option,
.course-grid > * {
  min-width: 0;
  border-radius: var(--cc-r-md) !important;
}

.success-msg {
  border: 1px solid rgba(53,211,154,.38) !important;
  border-radius: var(--cc-r-md) !important;
  color: #b8f6df !important;
  background: rgba(53,211,154,.10) !important;
}

/* ---------- Chapters and question bank ---------------------------------- */
.top-nav {
  width: min(calc(100% - 24px), var(--cc-content)) !important;
  margin-inline: auto !important;
  border: 1px solid var(--cc-line) !important;
  border-radius: var(--cc-r-lg) !important;
  background: rgba(9,20,37,.90) !important;
  box-shadow: var(--cc-shadow-sm) !important;
  backdrop-filter: blur(16px);
}

.hub-wrap {
  width: min(calc(100% - 24px), var(--cc-content)) !important;
  max-width: var(--cc-content) !important;
  margin-inline: auto !important;
}

.hub-tabs {
  gap: 8px !important;
  padding: 8px !important;
  overflow-x: auto;
  overscroll-behavior-inline: contain;
  border: 1px solid var(--cc-line) !important;
  border-radius: var(--cc-r-lg) !important;
  background: rgba(255,255,255,.035) !important;
  scrollbar-width: none;
}

.hub-tabs::-webkit-scrollbar {
  display: none;
}

.hub-tab {
  flex: 0 0 auto;
  min-height: 46px;
  padding: 10px 18px !important;
  border: 1px solid transparent !important;
  border-radius: var(--cc-r-pill) !important;
  color: var(--cc-text-soft) !important;
  background: transparent !important;
  font-weight: 820 !important;
  cursor: pointer;
}

.hub-tab:hover {
  border-color: var(--cc-line) !important;
  background: rgba(255,255,255,.045) !important;
}

.hub-tab.active,
.hub-tab[aria-selected="true"] {
  color: #06111e !important;
  background: linear-gradient(135deg, var(--cc-sky), var(--cc-violet)) !important;
  box-shadow: 0 10px 25px rgba(57,198,255,.18) !important;
}

.hub-head {
  padding-block: 28px 18px !important;
}

.hub-pill {
  border: 1px solid rgba(53,211,154,.38) !important;
  border-radius: var(--cc-r-pill) !important;
  color: #8ef0ca !important;
  background: rgba(53,211,154,.08) !important;
}

.comp {
  overflow: hidden;
  margin-bottom: 14px !important;
  border: 1px solid var(--cc-line) !important;
  border-radius: var(--cc-r-lg) !important;
  background: linear-gradient(150deg, rgba(16,34,59,.94), rgba(8,17,31,.96)) !important;
  box-shadow: var(--cc-shadow-xs) !important;
  transition:
    border-color var(--cc-normal) ease,
    box-shadow var(--cc-normal) ease,
    transform var(--cc-normal) var(--cc-ease) !important;
}

.comp:hover {
  border-color: rgba(101,211,255,.32) !important;
  box-shadow: var(--cc-shadow-sm) !important;
}

.comp.open,
.comp[aria-expanded="true"] {
  border-color: var(--cc-line-strong) !important;
  box-shadow: var(--cc-shadow-glow) !important;
}

.comp-bar {
  min-height: 76px;
  gap: 12px !important;
  padding: 14px clamp(13px, 2.5vw, 22px) !important;
  cursor: pointer;
}

.comp-idx {
  flex: 0 0 auto;
  color: #07111e !important;
  background: linear-gradient(135deg, var(--cc-sky-2), var(--cc-violet)) !important;
}

.comp-name {
  min-width: 0;
  color: var(--cc-text) !important;
  overflow-wrap: anywhere;
}

.comp-tag.free,
.comp .free {
  border-color: rgba(53,211,154,.35) !important;
  color: #99f4d1 !important;
  background: rgba(53,211,154,.09) !important;
}

.comp.locked {
  border-color: rgba(255,210,74,.18) !important;
}

.comp.locked .comp-tag,
.comp-lock {
  border-color: var(--cc-gold-line) !important;
  color: #ffe69a !important;
  background: rgba(255,210,74,.08) !important;
}

.comp-body {
  border-top: 1px solid var(--cc-line) !important;
}

.comp-vault,
.clock-form {
  border: 1px solid var(--cc-line) !important;
  border-radius: var(--cc-r-md) !important;
  background: rgba(255,255,255,.028) !important;
}

.comp-frame-wrap {
  overflow: hidden;
  border: 1px solid var(--cc-line) !important;
  border-radius: var(--cc-r-md) !important;
  background: #fff;
}

.comp-frame {
  display: block;
  width: 100%;
}

/* Mobile navigation shortcuts must remain readable and tappable. */
.cc-xlink,
.nav-back-btn.visible {
  min-width: 46px;
  min-height: 46px;
  display: inline-flex !important;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

/* ---------- Lectures and games ------------------------------------------ */
.lec,
.game-card,
.option-item,
.question-box,
.qz-q {
  border: 1px solid var(--cc-line) !important;
  border-radius: var(--cc-r-lg) !important;
  background: linear-gradient(150deg, rgba(16,34,59,.93), rgba(8,17,31,.95)) !important;
  box-shadow: var(--cc-shadow-xs) !important;
}

.lec {
  overflow: hidden;
  margin-bottom: 14px !important;
}

.lec-bar {
  min-height: 72px;
  padding: 14px clamp(13px, 2.5vw, 22px) !important;
}

.lec-num,
.qn,
.pqn {
  color: #07111e !important;
  background: linear-gradient(135deg, var(--cc-sky), var(--cc-violet)) !important;
}

.lec-chip,
.pchip {
  border: 1px solid var(--cc-line) !important;
  color: var(--cc-text-soft) !important;
  background: rgba(255,255,255,.045) !important;
}

.option-item,
.qz-opt {
  min-height: 48px;
  transition:
    transform var(--cc-fast) var(--cc-ease),
    border-color var(--cc-fast) ease,
    background var(--cc-fast) ease !important;
}

.option-item:hover,
.qz-opt:hover {
  border-color: var(--cc-line-strong) !important;
  background: rgba(57,198,255,.07) !important;
  transform: translateY(-1px);
}

/* ---------- Footer and floating actions --------------------------------- */
.am-brandfoot,
.am-wmark {
  width: 100% !important;
  max-width: 100% !important;
  margin-inline: 0 !important;
}

.am-brandfoot {
  position: relative;
  overflow: hidden;
  border-top: 1px solid var(--cc-line) !important;
  background:
    radial-gradient(circle at 10% 100%, rgba(57,198,255,.10), transparent 22rem),
    linear-gradient(180deg, rgba(9,20,37,.96), rgba(5,10,18,.99)) !important;
}

.hm-flinks a,
.am-brandfoot a {
  color: #c7d5e7 !important;
  text-decoration: none;
}

.hm-flinks a:hover,
.am-brandfoot a:hover {
  color: var(--cc-sky-2) !important;
  text-decoration: underline;
}

.cc-wa,
.scroll-top {
  border: 1px solid rgba(255,255,255,.26) !important;
  box-shadow: var(--cc-shadow-md) !important;
  transition:
    transform var(--cc-fast) var(--cc-ease),
    box-shadow var(--cc-fast) ease !important;
}

.cc-wa {
  color: #052412 !important;
  background: linear-gradient(135deg, #53e887, #20bf61) !important;
}

.scroll-top {
  bottom: 80px !important;
  color: #07111e !important;
  background: linear-gradient(135deg, var(--cc-sky), var(--cc-violet)) !important;
}

.cc-wa:hover,
.scroll-top:hover {
  transform: translateY(-3px) scale(1.03);
}

/* ---------- Responsive behavior ----------------------------------------- */
@media (max-width: 980px) {
  :root {
    --cc-header-h: 68px;
  }

  .am-brandbar {
    position: sticky !important;
    inset-block-start: 6px;
    width: min(calc(100% - 14px), var(--cc-content)) !important;
    margin-top: 6px !important;
    padding: 8px 10px !important;
  }

  .menu-toggle {
    display: inline-grid !important;
    place-items: center;
  }

  .am-nav-links,
  .nav-links {
    position: absolute !important;
    inset-block-start: calc(100% + 10px);
    inset-inline: 0;
    z-index: 1010;
    display: none !important;
    width: 100%;
    max-height: min(68vh, 520px);
    margin: 0 !important;
    padding: 10px !important;
    overflow-y: auto;
    border: 1px solid var(--cc-line-strong) !important;
    border-radius: var(--cc-r-lg) !important;
    background: rgba(7,16,29,.97) !important;
    box-shadow: var(--cc-shadow-md) !important;
    backdrop-filter: blur(18px);
  }

  .am-nav-links.active,
  .nav-links.active {
    display: grid !important;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    animation: cc-menu-in var(--cc-normal) var(--cc-ease) both;
  }

  .am-nav-links a,
  .nav-links a {
    justify-content: center;
    text-align: center;
  }

  .pricing-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
  }
}

@media (max-width: 700px) {
  body {
    overflow-x: clip !important;
  }

  .container,
  .hm-main,
  .pricing,
  .payment-section,
  .auth-page,
  .book-wrap {
    width: min(100% - 20px, var(--cc-content)) !important;
  }

  .am-title-cover,
  .hub-wrap,
  .top-nav {
    width: calc(100% - 16px) !important;
  }

  .am-brandbar {
    border-radius: 18px !important;
  }

  .am-bnames {
    display: none !important;
  }

  .am-logo-wrap {
    gap: 7px !important;
  }

  .am-bphoto,
  .am-blogo,
  .am-blogo-fallback {
    width: 48px !important;
    height: 48px !important;
  }

  .am-lang-buttons a {
    min-width: 40px;
  }

  .am-nav-links.active,
  .nav-links.active {
    grid-template-columns: 1fr;
  }

  .hm-main {
    padding-top: 12px;
  }

  .hm-hero {
    padding: 34px 15px 28px !important;
    border-radius: 22px !important;
  }

  .hm-h1 {
    font-size: clamp(2.35rem, 14vw, 4.1rem) !important;
  }

  .hm-ctas,
  .hm-actions {
    display: grid !important;
    grid-template-columns: 1fr;
  }

  .hm-btn,
  .hm-ctas .btn,
  .price-card .btn,
  .price-card .btn-primary,
  .price-card .btn-orange,
  .price-card .btn-outline,
  .btn-submit {
    width: 100%;
    justify-content: center;
  }

  .hm-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
  }

  .hm-grid,
  .pricing-grid,
  .payment-methods {
    grid-template-columns: 1fr !important;
  }

  .price-card {
    padding: 24px 18px !important;
  }

  .form-row {
    grid-template-columns: 1fr !important;
    gap: 0 !important;
  }

  .auth-box,
  .book-card {
    width: 100% !important;
    padding: 24px 16px !important;
    border-radius: 22px !important;
  }

  .course-grid {
    grid-template-columns: 1fr !important;
  }

  .hub-tab {
    padding-inline: 15px !important;
  }

  .hub-head {
    padding-inline: 4px !important;
  }

  .hub-bulk {
    display: grid !important;
    grid-template-columns: 1fr 1fr;
    gap: 8px !important;
  }

  .comp {
    border-radius: 17px !important;
  }

  .comp-bar {
    min-height: 70px;
    gap: 8px !important;
    padding: 12px 10px !important;
  }

  .comp-name {
    font-size: .93rem !important;
  }

  .comp-tag {
    font-size: .68rem !important;
  }

  .comp-emoji {
    display: none;
  }

  /* Keep hidden visual labels available when space permits, while avoiding
     overflow in the navigation shortcut row. Add aria-label in HTML too. */
  .cc-xlink .lbl,
  .nav-back-btn .lbl {
    max-width: 7rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .cc-wa {
    inset-inline-end: 12px !important;
    bottom: 12px !important;
  }
}

@media (max-width: 420px) {
  .am-brandbar {
    width: calc(100% - 10px) !important;
    padding-inline: 7px !important;
  }

  .am-lang-buttons {
    padding: 3px !important;
  }

  .am-lang-buttons a {
    min-width: 36px;
    min-height: 32px;
    padding-inline: 6px !important;
    font-size: .74rem !important;
  }

  .menu-toggle {
    min-width: 42px;
    min-height: 42px;
  }

  .hm-stat {
    padding: 13px 8px !important;
  }

  .hub-bulk {
    grid-template-columns: 1fr;
  }

  .comp-idx {
    width: 35px !important;
    height: 35px !important;
  }
}

/* ---------- Motion, contrast and print ---------------------------------- */
@keyframes cc-menu-in {
  from { opacity: 0; transform: translateY(-8px) scale(.985); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}

@media (prefers-contrast: more) {
  :root {
    --cc-line: rgba(186, 226, 255, .42);
    --cc-line-strong: rgba(197, 233, 255, .76);
    --cc-muted: #c2cede;
  }

  .btn-outline,
  .btn-secondary,
  .hm-btn.ghost,
  .nav-back-btn,
  .cl-btn {
    border-width: 2px !important;
  }
}

@media print {
  :root {
    color-scheme: light;
  }

  html,
  body {
    color: #111 !important;
    background: #fff !important;
  }

  body::before,
  .am-brandbar,
  .top-nav,
  .cc-wa,
  .scroll-top,
  .menu-toggle,
  .hm-ctas,
  .hub-bulk,
  .comp-lock,
  .clock-form {
    display: none !important;
  }

  .hm-hero,
  .hm-card,
  .hm-plan,
  .price-card,
  .auth-box,
  .book-card,
  .comp,
  .lec,
  .payment-container,
  .order-summary,
  .payment-form {
    color: #111 !important;
    border: 1px solid #bbb !important;
    background: #fff !important;
    box-shadow: none !important;
  }

  a {
    color: #111 !important;
  }
}