/* ============================================================
   DOLLAR CLARITY — STYLE.CSS
   Dark-first fintech brand: navy, teal accent, white
   Fonts: Cabinet Grotesk (display) + Satoshi (body)
   ============================================================ */

/* ─── DESIGN TOKENS ─────────────────────────────────────────── */
:root {
  /* Type scale */
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);

  /* Spacing */
  --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem;
  --space-4: 1rem;    --space-5: 1.25rem; --space-6: 1.5rem;
  --space-8: 2rem;    --space-10: 2.5rem; --space-12: 3rem;
  --space-16: 4rem;   --space-20: 5rem;   --space-24: 6rem;

  /* Radius */
  --radius-sm: 0.375rem; --radius-md: 0.625rem;
  --radius-lg: 1rem;     --radius-xl: 1.5rem; --radius-full: 9999px;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --transition: 200ms var(--ease-out);

  /* Fonts */
  --font-display: 'Cabinet Grotesk', 'Helvetica Neue', sans-serif;
  --font-body:    'Satoshi', 'Inter', sans-serif;

  /* Content widths */
  --content-default: 1100px;
  --content-narrow:  680px;
}

/* ─── DARK MODE (default) ────────────────────────────────────── */
:root, [data-theme="dark"] {
  --color-bg:              #080e1a;
  --color-surface:         #0d1524;
  --color-surface-2:       #111d2e;
  --color-surface-offset:  #152035;
  --color-border:          #1e2d42;
  --color-divider:         #162130;

  --color-text:            #e8edf5;
  --color-text-muted:      #7a8fa8;
  --color-text-faint:      #3d5570;

  --color-accent:          #00D4AA;
  --color-accent-hover:    #00bfa0;
  --color-accent-subtle:   rgba(0, 212, 170, 0.12);
  --color-accent-border:   rgba(0, 212, 170, 0.25);

  --color-red:             #ff4f5a;
  --color-yellow:          #FFD700;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 60px rgba(0, 212, 170, 0.12);
}

[data-theme="light"] {
  --color-bg:              #f5f7fa;
  --color-surface:         #ffffff;
  --color-surface-2:       #f0f4f9;
  --color-surface-offset:  #e8eef5;
  --color-border:          #d0dae7;
  --color-divider:         #dde5ef;

  --color-text:            #0a1628;
  --color-text-muted:      #4a6480;
  --color-text-faint:      #9ab0c8;

  --color-accent:          #008f75;
  --color-accent-hover:    #007a63;
  --color-accent-subtle:   rgba(0, 143, 117, 0.08);
  --color-accent-border:   rgba(0, 143, 117, 0.2);

  --color-red:             #d63b45;
  --color-yellow:          #c8a000;

  --shadow-sm: 0 1px 3px rgba(10,22,40,0.08);
  --shadow-md: 0 4px 16px rgba(10,22,40,0.1);
  --shadow-lg: 0 12px 40px rgba(10,22,40,0.15);
  --shadow-glow: 0 0 60px rgba(0, 143, 117, 0.08);
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    --color-bg: #f5f7fa; --color-surface: #ffffff;
    --color-surface-2: #f0f4f9; --color-surface-offset: #e8eef5;
    --color-border: #d0dae7; --color-divider: #dde5ef;
    --color-text: #0a1628; --color-text-muted: #4a6480;
    --color-text-faint: #9ab0c8;
    --color-accent: #008f75; --color-accent-hover: #007a63;
    --color-accent-subtle: rgba(0,143,117,0.08);
    --color-accent-border: rgba(0,143,117,0.2);
    --color-red: #d63b45; --color-yellow: #c8a000;
    --shadow-sm: 0 1px 3px rgba(10,22,40,0.08);
    --shadow-md: 0 4px 16px rgba(10,22,40,0.1);
    --shadow-lg: 0 12px 40px rgba(10,22,40,0.15);
    --shadow-glow: 0 0 60px rgba(0,143,117,0.08);
  }
}

/* ─── BASE RESET ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}
body {
  min-height: 100dvh;
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.65;
  color: var(--color-text);
  background-color: var(--color-bg);
  transition: background-color 0.3s var(--ease-out), color 0.3s var(--ease-out);
}
img, svg { display: block; max-width: 100%; height: auto; }
ul[role="list"], ol[role="list"] { list-style: none; }
h1,h2,h3,h4,h5,h6 { text-wrap: balance; line-height: 1.15; font-family: var(--font-display); }
p, li { text-wrap: pretty; max-width: 70ch; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; background: none; border: none; font: inherit; color: inherit; }
input, textarea, select { font: inherit; color: inherit; }
::selection { background: var(--color-accent-subtle); color: var(--color-text); }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 3px; border-radius: var(--radius-sm); }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ─── LAYOUT ─────────────────────────────────────────────────── */
.container { max-width: var(--content-default); margin-inline: auto; padding-inline: clamp(var(--space-6), 5vw, var(--space-16)); }
.section { padding-block: clamp(var(--space-16), 8vw, var(--space-24)); }

/* ─── HEADER ─────────────────────────────────────────────────── */
.header {
  position: sticky; top: 0; z-index: 100;
  background: oklch(from var(--color-bg) l c h / 0.88);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow 0.3s var(--ease-out), transform 0.3s var(--ease-out);
}
.header--scrolled { box-shadow: var(--shadow-md); }
.header--hidden { transform: translateY(-100%); }

.header-inner {
  max-width: var(--content-default);
  margin-inline: auto;
  padding-inline: clamp(var(--space-6), 5vw, var(--space-16));
  height: 68px;
  display: flex; align-items: center; gap: var(--space-8);
}

/* Logo */
.logo { display: flex; align-items: center; gap: var(--space-3); flex-shrink: 0; }
.logo-text {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: -0.02em;
}
.logo-accent { color: var(--color-accent); }

/* Nav */
.nav { display: flex; align-items: center; gap: var(--space-1); margin-inline-start: auto; }
.nav-link {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  border-radius: var(--radius-md);
  transition: color var(--transition), background var(--transition);
}
.nav-link:hover { color: var(--color-text); background: var(--color-surface-offset); }
.nav-link--cta {
  background: var(--color-accent-subtle);
  color: var(--color-accent);
  border: 1px solid var(--color-accent-border);
  margin-inline-start: var(--space-2);
}
.nav-link--cta:hover { background: var(--color-accent); color: #000; }

.header-actions { display: flex; align-items: center; gap: var(--space-2); margin-inline-start: var(--space-4); }

.theme-toggle {
  width: 38px; height: 38px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  transition: color var(--transition), background var(--transition);
}
.theme-toggle:hover { color: var(--color-text); background: var(--color-surface-offset); }

/* Mobile Nav Toggle */
.nav-toggle {
  display: none; flex-direction: column; justify-content: center;
  gap: 5px; width: 38px; height: 38px;
  padding: var(--space-2); border-radius: var(--radius-md);
}
.nav-toggle span {
  display: block; width: 22px; height: 2px;
  background: var(--color-text-muted); border-radius: 2px;
  transition: var(--transition);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-nav {
  display: none;
  flex-direction: column;
  padding: var(--space-4) clamp(var(--space-6), 5vw, var(--space-16));
  padding-bottom: var(--space-6);
  border-top: 1px solid var(--color-border);
  gap: var(--space-1);
}
.mobile-nav.is-open { display: flex; }
.mobile-nav-link {
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base); font-weight: 500;
  color: var(--color-text-muted); border-radius: var(--radius-md);
  transition: var(--transition);
}
.mobile-nav-link:hover { color: var(--color-text); background: var(--color-surface-offset); }
.mobile-nav-link--cta {
  color: var(--color-accent); background: var(--color-accent-subtle);
  border: 1px solid var(--color-accent-border); margin-top: var(--space-2);
}

@media (max-width: 768px) {
  .nav { display: none; }
  .nav-toggle { display: flex; }
  .header-actions .theme-toggle { margin-inline-start: 0; }
}

/* ─── BUTTONS ────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-display); font-size: var(--text-sm); font-weight: 700;
  border-radius: var(--radius-full);
  border: 2px solid transparent;
  transition: all var(--transition);
  white-space: nowrap; cursor: pointer;
}
.btn--primary {
  background: var(--color-accent); color: #001a14;
  box-shadow: 0 0 20px rgba(0,212,170,0.25);
}
.btn--primary:hover {
  background: var(--color-accent-hover);
  box-shadow: 0 0 30px rgba(0,212,170,0.4);
  transform: translateY(-1px);
}
.btn--ghost {
  background: var(--color-surface-offset); color: var(--color-text);
  border-color: var(--color-border);
}
.btn--ghost:hover { background: var(--color-surface-2); border-color: var(--color-accent-border); }
.btn--outline {
  background: transparent; color: var(--color-accent);
  border-color: var(--color-accent-border);
}
.btn--outline:hover { background: var(--color-accent-subtle); border-color: var(--color-accent); }

/* ─── EYEBROW / LABELS ───────────────────────────────────────── */
.eyebrow {
  display: inline-block;
  font-size: var(--text-xs); font-weight: 700; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--color-accent);
  margin-bottom: var(--space-3);
}
.eyebrow--light { color: var(--color-accent); }

/* ─── SECTION HEADERS ────────────────────────────────────────── */
.section-header { text-align: center; margin-bottom: clamp(var(--space-10), 4vw, var(--space-16)); }
.section-title {
  font-size: var(--text-2xl); font-weight: 900; letter-spacing: -0.03em;
  color: var(--color-text);
}
.section-sub {
  font-size: var(--text-base); color: var(--color-text-muted);
  max-width: 55ch; margin-inline: auto; margin-top: var(--space-4);
}

/* ─── HERO ───────────────────────────────────────────────────── */
.hero {
  position: relative; overflow: hidden;
  min-height: clamp(580px, 85vh, 820px);
  display: grid; grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: var(--space-12);
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
  padding-inline: clamp(var(--space-6), 5vw, calc((100vw - var(--content-default)) / 2 + var(--space-16)));
}

/* BG */
.hero-bg { position: absolute; inset: 0; z-index: 0; }
.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(0,212,170,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,170,0.05) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 20%, transparent 100%);
}
.hero-glow {
  position: absolute; top: -20%; right: -10%; width: 60%; height: 80%;
  background: radial-gradient(ellipse, rgba(0,212,170,0.1) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner { position: relative; z-index: 1; }
.hero-visual { position: relative; z-index: 1; display: flex; justify-content: center; align-items: center; }

.hero-badge {
  display: inline-flex; align-items: center; gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--color-accent-subtle);
  border: 1px solid var(--color-accent-border);
  border-radius: var(--radius-full);
  font-size: var(--text-xs); font-weight: 600; color: var(--color-accent);
  letter-spacing: 0.04em; margin-bottom: var(--space-6);
}
.badge-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--color-accent); animation: pulse 2s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.4; } }

.hero-heading {
  font-size: var(--text-3xl); font-weight: 900; letter-spacing: -0.04em;
  color: var(--color-text); line-height: 1.05;
}
.hero-heading-top { display: block; }
.hero-heading-bottom { display: block; }
.hero-accent { color: var(--color-accent); }

.hero-sub {
  font-size: var(--text-base); color: var(--color-text-muted); line-height: 1.7;
  max-width: 46ch; margin-top: var(--space-6);
}

.hero-ctas { display: flex; gap: var(--space-4); flex-wrap: wrap; margin-top: var(--space-8); }

.hero-stats {
  display: flex; align-items: center; gap: var(--space-8);
  margin-top: var(--space-10); padding-top: var(--space-8);
  border-top: 1px solid var(--color-border);
  flex-wrap: wrap;
}
.stat { display: flex; flex-direction: column; gap: var(--space-1); }
.stat-number {
  font-family: var(--font-display); font-size: var(--text-xl); font-weight: 900;
  color: var(--color-text); letter-spacing: -0.03em; line-height: 1;
}
.stat-suffix { font-size: var(--text-lg); color: var(--color-accent); font-weight: 700; display: inline; }
.stat-label { font-size: var(--text-xs); color: var(--color-text-muted); font-weight: 500; letter-spacing: 0.02em; }
.stat-divider { width: 1px; height: 36px; background: var(--color-border); }

/* Hero card stack */
.hero-card-stack { position: relative; width: 340px; height: 220px; }
.preview-card {
  position: absolute; border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  transition: transform 0.5s var(--ease-out);
}
.preview-card--back {
  inset: 0; background: var(--color-surface);
  transform: rotate(-5deg) translateY(8px) translateX(-10px);
  opacity: 0.4;
}
.preview-card--mid {
  inset: 0; background: var(--color-surface-2);
  transform: rotate(-2deg) translateY(4px) translateX(-4px);
  opacity: 0.7;
}
.preview-card--front {
  inset: 0; background: var(--color-surface-2);
  box-shadow: var(--shadow-lg), 0 0 30px rgba(0,212,170,0.1);
  overflow: hidden; display: flex; flex-direction: column;
}
.preview-card-thumb {
  flex: 1; background: #0A1628; position: relative;
  display: flex; flex-direction: column; justify-content: flex-end;
  padding: var(--space-4);
}
.preview-thumb-text {
  font-family: var(--font-display); font-size: clamp(1.4rem, 3vw, 1.8rem);
  font-weight: 900; color: white; line-height: 1;
}
.preview-thumb-tag {
  position: absolute; top: var(--space-3); left: 0; right: 0;
  background: var(--color-accent); color: #001a14;
  font-size: 0.65rem; font-weight: 800; text-align: center;
  padding: var(--space-1) 0; letter-spacing: 0.06em;
}
.preview-card-info {
  display: flex; justify-content: space-between; align-items: center;
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--color-border);
}
.preview-channel { font-size: var(--text-xs); font-weight: 700; color: var(--color-accent); }
.preview-views { font-size: var(--text-xs); color: var(--color-text-muted); }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; padding-inline: clamp(var(--space-6), 5vw, var(--space-12)); }
  .hero-visual { display: none; }
  .hero-heading { font-size: var(--text-2xl); }
}

/* ─── VALUE STRIP ────────────────────────────────────────────── */
.value-strip {
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
  padding-block: var(--space-5);
}
.value-strip-inner {
  max-width: var(--content-default); margin-inline: auto;
  padding-inline: clamp(var(--space-6), 5vw, var(--space-16));
  display: flex; gap: var(--space-8); flex-wrap: wrap;
  justify-content: center; align-items: center;
}
.value-item {
  display: flex; align-items: center; gap: var(--space-3);
  font-size: var(--text-sm); font-weight: 500; color: var(--color-text-muted);
  white-space: nowrap;
}

/* ─── VIDEOS SECTION ─────────────────────────────────────────── */
.videos-section { background: var(--color-bg); }

.videos-grid {
  display: grid; grid-template-columns: 1.3fr 1fr 1fr;
  gap: var(--space-6); align-items: start;
}

.video-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.video-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent-border);
}

.video-thumb-wrap { display: block; position: relative; aspect-ratio: 16/9; overflow: hidden; }
.video-thumb { width: 100%; height: 100%; background: #0a1628; position: relative; overflow: hidden; }

/* Thumb 1 */
.thumb-1 {
  background: linear-gradient(135deg, #080e1a 0%, #0a1a2e 100%);
}
.thumb-overlay {
  position: absolute; inset: 0; padding: var(--space-4); display: flex;
  flex-direction: column; justify-content: flex-end;
}
.thumb-headline {
  font-family: var(--font-display); font-size: clamp(1.2rem, 3vw, 2rem);
  font-weight: 900; color: white; line-height: 1;
}
.thumb-sub-badge {
  position: absolute; top: 0; left: 0; right: 0;
  background: var(--color-accent); color: #001a14;
  font-family: var(--font-display); font-size: 0.6rem; font-weight: 900;
  text-align: center; padding: 5px; letter-spacing: 0.1em;
}
.thumb-zero {
  font-family: var(--font-display); font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 900; color: #ff4f5a; line-height: 1; margin-bottom: var(--space-1);
}

/* Thumb 2 */
.thumb-2 { background: linear-gradient(135deg, #0d0a1a 0%, #130f26 100%); }
.thumb-overlay-2 { position: absolute; inset: 0; padding: var(--space-4); display: flex; flex-direction: column; justify-content: flex-end; }
.thumb-top-badge {
  position: absolute; top: 0; left: 0; right: 0;
  font-family: var(--font-display); font-size: 0.6rem; font-weight: 900;
  text-align: center; padding: 5px; letter-spacing: 0.1em;
}
.red-badge { background: #d63b45; color: white; }
.green-badge { background: var(--color-accent); color: #001a14; }
.thumb-headline-2 {
  font-family: var(--font-display); font-size: clamp(1.2rem, 3vw, 1.8rem);
  font-weight: 900; color: white; line-height: 1;
}
.thumb-sub-2 {
  font-family: var(--font-display); font-size: 0.65rem; font-weight: 700;
  color: #FFD700; margin-bottom: var(--space-1); letter-spacing: 0.03em;
}

/* Thumb 3 */
.thumb-3 { background: linear-gradient(135deg, #080e1a 0%, #0d1a1a 100%); }
.thumb-overlay-3 { position: absolute; inset: 0; padding: var(--space-4); display: flex; flex-direction: column; justify-content: space-between; }
.thumb-headline-3 {
  font-family: var(--font-display); font-size: clamp(1rem, 2.5vw, 1.5rem);
  font-weight: 900; color: white; line-height: 1.1; margin-top: var(--space-6);
}
.red-text { color: #ff4f5a; }
.thumb-bottom-badge {
  font-family: var(--font-display); font-size: 0.65rem; font-weight: 900;
  padding: var(--space-2) var(--space-4); text-align: center;
  border-radius: var(--radius-sm); letter-spacing: 0.05em; align-self: center;
}

.play-btn {
  position: absolute; bottom: var(--space-4); right: var(--space-4);
  width: 42px; height: 42px;
  background: rgba(0,0,0,0.6); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  backdrop-filter: blur(4px);
  transition: background var(--transition), transform var(--transition);
}
.video-thumb-wrap:hover .play-btn { background: var(--color-accent); transform: scale(1.1); }

.video-badge {
  position: absolute; top: var(--space-3); left: var(--space-3);
  background: rgba(0,0,0,0.6); color: var(--color-accent);
  font-size: var(--text-xs); font-weight: 700;
  padding: var(--space-1) var(--space-3); border-radius: var(--radius-full);
  backdrop-filter: blur(4px); border: 1px solid var(--color-accent-border);
}

.video-info { padding: var(--space-5); }
.video-title {
  font-family: var(--font-display); font-size: var(--text-base); font-weight: 800;
  color: var(--color-text); line-height: 1.3; margin-bottom: var(--space-3);
}
.video-card--featured .video-title { font-size: var(--text-lg); }
.video-desc { font-size: var(--text-sm); color: var(--color-text-muted); line-height: 1.6; margin-bottom: var(--space-4); }
.video-meta { display: flex; gap: var(--space-2); flex-wrap: wrap; }
.video-topic-tag {
  font-size: var(--text-xs); font-weight: 600;
  padding: var(--space-1) var(--space-3); border-radius: var(--radius-full);
  background: var(--color-accent-subtle); color: var(--color-accent);
  border: 1px solid var(--color-accent-border);
}

.videos-cta { text-align: center; margin-top: var(--space-10); }

@media (max-width: 900px) {
  .videos-grid { grid-template-columns: 1fr; }
  .video-card--featured .video-title { font-size: var(--text-base); }
}

/* ─── TOPICS SECTION ─────────────────────────────────────────── */
.topics-section { background: var(--color-surface); }

.topics-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}

.topic-card {
  padding: var(--space-8);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.topic-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-accent-border);
  box-shadow: var(--shadow-md);
}

.topic-icon {
  width: 52px; height: 52px;
  display: flex; align-items: center; justify-content: center;
  background: var(--color-accent-subtle);
  border: 1px solid var(--color-accent-border);
  border-radius: var(--radius-md);
  color: var(--color-accent);
  margin-bottom: var(--space-5);
}
.topic-title {
  font-size: var(--text-base); font-weight: 800;
  color: var(--color-text); margin-bottom: var(--space-3);
}
.topic-desc { font-size: var(--text-sm); color: var(--color-text-muted); line-height: 1.6; }

@media (max-width: 768px) {
  .topics-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 500px) {
  .topics-grid { grid-template-columns: 1fr; }
}

/* ─── ABOUT SECTION ──────────────────────────────────────────── */
.about-section { background: var(--color-bg); }
.about-grid {
  display: grid; grid-template-columns: 1fr 1.2fr;
  gap: clamp(var(--space-10), 6vw, var(--space-20));
  align-items: center;
}

/* Chart Visual */
.about-visual { display: flex; justify-content: center; align-items: center; }
.about-chart {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  width: 100%; max-width: 380px;
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}
.chart-label {
  font-size: var(--text-xs); font-weight: 600; color: var(--color-text-muted);
  text-align: center; margin-bottom: var(--space-8); letter-spacing: 0.02em;
}
.chart-bars {
  display: flex; gap: var(--space-10); justify-content: center;
  align-items: flex-end; height: 200px;
}
.chart-bar-wrap { display: flex; flex-direction: column; align-items: center; gap: var(--space-3); }
.chart-bar {
  width: 80px; height: calc(var(--bar-height));
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  position: relative; display: flex; align-items: flex-start;
  justify-content: center; padding-top: var(--space-3);
  animation: grow-bar 1.2s var(--ease-out) forwards;
}
@keyframes grow-bar {
  from { height: 0; }
  to { height: calc(200px * var(--bar-height) / 100%); }
}
.chart-bar--no-invest { background: linear-gradient(180deg, #2d3a4a, #1e2d3e); height: calc(200px * 0.18); }
.chart-bar--invest { background: linear-gradient(180deg, #00D4AA, #00a688); height: 200px; }
.bar-label {
  font-family: var(--font-display); font-size: var(--text-sm); font-weight: 800;
  color: white;
}
.chart-bar-title { font-size: var(--text-xs); color: var(--color-text-muted); font-weight: 600; text-align: center; }
.chart-note {
  font-size: var(--text-xs); color: var(--color-text-faint); text-align: center;
  margin-top: var(--space-6); line-height: 1.5; padding-top: var(--space-5);
  border-top: 1px solid var(--color-border);
}

/* About Content */
.about-text { font-size: var(--text-base); color: var(--color-text-muted); line-height: 1.75; margin-bottom: var(--space-5); }
.about-points { display: flex; flex-direction: column; gap: var(--space-4); margin-block: var(--space-8); }
.about-point {
  display: flex; align-items: flex-start; gap: var(--space-3);
  font-size: var(--text-sm); color: var(--color-text-muted); line-height: 1.5;
}

@media (max-width: 800px) {
  .about-grid { grid-template-columns: 1fr; }
  .about-visual { order: -1; }
}

/* ─── TOOLS / AFFILIATE SECTION ──────────────────────────────── */
.tools-section { background: var(--color-surface); }
.tools-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
}

.tool-card {
  display: flex; flex-direction: column;
  padding: var(--space-6);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.tool-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-accent-border);
  box-shadow: var(--shadow-md);
}
.tool-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: var(--space-5); }
.tool-icon {
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-md);
}
.tool-icon--green { background: rgba(0,212,170,0.12); color: #00D4AA; }
.tool-icon--blue  { background: rgba(59,130,246,0.12); color: #6ba3f5; }
.tool-icon--purple { background: rgba(167,139,250,0.12); color: #a78bfa; }
.tool-icon--teal  { background: rgba(20,184,166,0.12); color: #5eead4; }
.tool-tag {
  font-size: 0.65rem; font-weight: 700; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--color-text-faint);
}
.tool-name {
  font-family: var(--font-display); font-size: var(--text-base); font-weight: 800;
  color: var(--color-text); margin-bottom: var(--space-3);
}
.tool-desc { font-size: var(--text-sm); color: var(--color-text-muted); line-height: 1.6; flex: 1; }
.tool-link {
  display: inline-block; margin-top: var(--space-5);
  font-size: var(--text-sm); font-weight: 700; color: var(--color-accent);
  transition: gap var(--transition);
}
.tool-card:hover .tool-link { text-decoration: underline; }
.tools-disclaimer {
  font-size: var(--text-xs); color: var(--color-text-faint);
  text-align: center; margin-top: var(--space-8); max-width: 60ch; margin-inline: auto;
}

@media (max-width: 900px) { .tools-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 500px) { .tools-grid { grid-template-columns: 1fr; } }

/* ─── NEWSLETTER SECTION ─────────────────────────────────────── */
.newsletter-section { background: var(--color-bg); }

.newsletter-box {
  display: grid; grid-template-columns: 1.2fr 1fr;
  gap: clamp(var(--space-10), 6vw, var(--space-16));
  align-items: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: clamp(var(--space-10), 5vw, var(--space-16));
  box-shadow: var(--shadow-glow);
  position: relative; overflow: hidden;
}
.newsletter-box::before {
  content: ''; position: absolute; top: -50%; right: -20%; width: 60%; height: 200%;
  background: radial-gradient(ellipse, rgba(0,212,170,0.06) 0%, transparent 70%);
  pointer-events: none;
}

.newsletter-title {
  font-size: var(--text-2xl); font-weight: 900; letter-spacing: -0.04em;
  color: var(--color-text); line-height: 1.1; margin-bottom: var(--space-5);
}
.newsletter-sub {
  font-size: var(--text-base); color: var(--color-text-muted); line-height: 1.7; margin-bottom: var(--space-8);
}

.newsletter-input-wrap { display: flex; gap: var(--space-3); flex-wrap: wrap; }
.newsletter-input {
  flex: 1; min-width: 220px;
  padding: var(--space-3) var(--space-5);
  background: var(--color-surface-offset);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full); color: var(--color-text);
  font-size: var(--text-sm);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.newsletter-input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-subtle);
}
.newsletter-input::placeholder { color: var(--color-text-faint); }
.newsletter-btn { flex-shrink: 0; }
.newsletter-privacy { font-size: var(--text-xs); color: var(--color-text-faint); margin-top: var(--space-3); }

/* Newsletter card visual */
.newsletter-visual { display: flex; justify-content: center; align-items: center; }
.newsletter-card {
  width: 280px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}
.nl-card-header {
  display: flex; align-items: center; gap: var(--space-2);
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface-offset);
}
.nl-dot { width: 10px; height: 10px; border-radius: 50%; }
.nl-dot--red { background: #ff5f57; }
.nl-dot--yellow { background: #febc2e; }
.nl-dot--green { background: #28c840; }
.nl-card-title { font-size: var(--text-xs); font-weight: 700; color: var(--color-text-muted); margin-inline-start: auto; }
.nl-card-body { padding: var(--space-5); }
.nl-subject { font-size: var(--text-sm); font-weight: 700; color: var(--color-text); margin-bottom: var(--space-3); }
.nl-preview { font-size: var(--text-xs); color: var(--color-text-muted); line-height: 1.6; margin-bottom: var(--space-5); }
.nl-action-bar { height: 8px; background: var(--color-accent-subtle); border-radius: var(--radius-full); margin-bottom: var(--space-3); width: 100%; }
.nl-action-bar--short { width: 60%; }

@media (max-width: 800px) {
  .newsletter-box { grid-template-columns: 1fr; }
  .newsletter-visual { display: none; }
}

/* ─── FOOTER ─────────────────────────────────────────────────── */
.footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding-block: clamp(var(--space-12), 6vw, var(--space-20));
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-10); margin-bottom: var(--space-12);
}
.footer-tagline { font-size: var(--text-sm); color: var(--color-text-muted); margin-top: var(--space-3); }
.footer-col-title { font-size: var(--text-xs); font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-text-faint); margin-bottom: var(--space-4); }
.footer-links { display: flex; flex-direction: column; gap: var(--space-3); }
.footer-link { font-size: var(--text-sm); color: var(--color-text-muted); transition: color var(--transition); }
.footer-link:hover { color: var(--color-accent); }
.footer-bottom {
  padding-top: var(--space-8); border-top: 1px solid var(--color-border);
  display: flex; gap: var(--space-8); flex-wrap: wrap; justify-content: space-between; align-items: center;
}
.footer-copy { font-size: var(--text-xs); color: var(--color-text-faint); }
.footer-disclaimer { font-size: var(--text-xs); color: var(--color-text-faint); max-width: none; }

@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
}

/* ─── SCROLL ANIMATIONS ──────────────────────────────────────── */
.fade-up {
  opacity: 0; transform: translateY(28px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}
.fade-up.visible { opacity: 1; transform: translateY(0); }
.fade-up:nth-child(2) { transition-delay: 0.1s; }
.fade-up:nth-child(3) { transition-delay: 0.2s; }
.fade-up:nth-child(4) { transition-delay: 0.3s; }
.fade-up:nth-child(5) { transition-delay: 0.4s; }
.fade-up:nth-child(6) { transition-delay: 0.5s; }