/* SHK-Vision Design Tokens & Styles */
/* Custom palette: Dark background, Orange (#E8860C) + Blue (#2E8BC0) accents from logo */

: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;
  --space-32: 8rem;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Content widths */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;
  --content-full: 100%;

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

/* DARK THEME (default — brand identity is dark) */
:root, [data-theme="dark"] {
  --color-bg:             #0a0a0f;
  --color-surface:        #12121a;
  --color-surface-2:      #1a1a24;
  --color-surface-offset: #15151f;
  --color-surface-dynamic: #222230;
  --color-divider:        #2a2a38;
  --color-border:         #333345;

  --color-text:           #e8e6e1;
  --color-text-muted:     #9a9890;
  --color-text-faint:     #5a5955;
  --color-text-inverse:   #0a0a0f;

  /* Primary = Orange (from logo/business card) */
  --color-primary:        #E8860C;
  --color-primary-hover:  #F59A2E;
  --color-primary-active: #CC7400;
  --color-primary-light:  rgba(232, 134, 12, 0.12);

  /* Secondary = Blue (from logo) */
  --color-secondary:      #2E8BC0;
  --color-secondary-hover:#4BA3D8;
  --color-secondary-active:#1A6FA0;
  --color-secondary-light: rgba(46, 139, 192, 0.12);

  --color-success:        #4CAF50;
  --color-error:          #E53935;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.5);
}

/* LIGHT THEME */
[data-theme="light"] {
  --color-bg:             #f5f4f0;
  --color-surface:        #ffffff;
  --color-surface-2:      #fafaf8;
  --color-surface-offset: #edecea;
  --color-surface-dynamic: #e0dfdb;
  --color-divider:        #d4d3cf;
  --color-border:         #c4c3bf;

  --color-text:           #1a1a1f;
  --color-text-muted:     #6b6a65;
  --color-text-faint:     #a0a09a;
  --color-text-inverse:   #f5f4f0;

  --color-primary:        #D47800;
  --color-primary-hover:  #B86800;
  --color-primary-active: #9C5800;
  --color-primary-light:  rgba(212, 120, 0, 0.1);

  --color-secondary:      #1A6FA0;
  --color-secondary-hover:#0D5A85;
  --color-secondary-active:#08476A;
  --color-secondary-light: rgba(26, 111, 160, 0.08);

  --color-success:        #2E7D32;
  --color-error:          #C62828;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.12);
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    --color-bg:             #f5f4f0;
    --color-surface:        #ffffff;
    --color-surface-2:      #fafaf8;
    --color-surface-offset: #edecea;
    --color-surface-dynamic: #e0dfdb;
    --color-divider:        #d4d3cf;
    --color-border:         #c4c3bf;
    --color-text:           #1a1a1f;
    --color-text-muted:     #6b6a65;
    --color-text-faint:     #a0a09a;
    --color-text-inverse:   #f5f4f0;
    --color-primary:        #D47800;
    --color-primary-hover:  #B86800;
    --color-primary-active: #9C5800;
    --color-primary-light:  rgba(212, 120, 0, 0.1);
    --color-secondary:      #1A6FA0;
    --color-secondary-hover:#0D5A85;
    --color-secondary-active:#08476A;
    --color-secondary-light: rgba(26, 111, 160, 0.08);
    --color-success:        #2E7D32;
    --color-error:          #C62828;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 12px 32px rgba(0,0,0,0.12);
  }
}

/* ============= GLOBAL LAYOUT ============= */

.container {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

.container--narrow {
  max-width: var(--content-default);
}

/* ============= HEADER / NAV ============= */

.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 10, 15, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-divider);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="light"] .header {
  background: rgba(245, 244, 240, 0.88);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-3);
  gap: var(--space-4);
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
}

.header__logo img {
  height: 40px;
  width: auto;
  border-radius: var(--radius-sm);
}

.header__logo-text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-lg);
  letter-spacing: -0.02em;
}

.header__logo-text span {
  color: var(--color-primary);
}

.nav { display: flex; align-items: center; gap: var(--space-6); }

.nav__link {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-interactive);
}
.nav__link:hover { color: var(--color-primary); }

.nav__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-5);
  background: var(--color-primary);
  color: #fff;
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-full);
  text-decoration: none;
  transition: background var(--transition-interactive), transform var(--transition-interactive);
}
.nav__cta:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  transition: color var(--transition-interactive), background var(--transition-interactive);
}
.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-dynamic);
}

/* Mobile hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  padding: var(--space-2);
}
.hamburger span {
  display: block;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all 0.3s ease;
}

@media (max-width: 768px) {
  .hamburger { display: flex; }
  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-divider);
    padding: var(--space-4);
    gap: var(--space-4);
  }
  .nav.active { display: flex; }
  .nav__cta { width: 100%; justify-content: center; }
}

/* ============= HERO ============= */

.hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(var(--space-16), 10vw, var(--space-32));
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
}
.hero__bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(10, 10, 15, 0.7) 0%,
    rgba(10, 10, 15, 0.85) 50%,
    var(--color-bg) 100%
  );
}

[data-theme="light"] .hero__bg::after {
  background: linear-gradient(
    to bottom,
    rgba(245, 244, 240, 0.7) 0%,
    rgba(245, 244, 240, 0.85) 50%,
    var(--color-bg) 100%
  );
}

.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  margin-inline: auto;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-4);
  background: var(--color-primary-light);
  border: 1px solid rgba(232, 134, 12, 0.25);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-6);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.hero__title {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-5);
}
.hero__title span { color: var(--color-primary); }

.hero__subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 600px;
  margin-inline: auto;
  margin-bottom: var(--space-8);
  line-height: 1.6;
}

.hero__actions {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-full);
  text-decoration: none;
  transition: all var(--transition-interactive);
  cursor: pointer;
}

.btn--primary {
  background: var(--color-primary);
  color: #fff;
}
.btn--primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(232, 134, 12, 0.25);
}

.btn--secondary {
  background: var(--color-surface-2);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn--secondary:hover {
  background: var(--color-surface-dynamic);
  transform: translateY(-2px);
}

/* ============= SECTIONS ============= */

.section {
  padding-block: clamp(var(--space-12), 8vw, var(--space-24));
}

.section__header {
  text-align: center;
  max-width: 700px;
  margin-inline: auto;
  margin-bottom: clamp(var(--space-8), 4vw, var(--space-16));
}

.section__label {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-3);
}

.section__title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
}

.section__desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 560px;
  margin-inline: auto;
}

/* ============= FEATURES GRID ============= */

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(320px, 100%), 1fr));
  gap: var(--space-6);
}

.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  opacity: 0;
  transition: opacity 0.3s ease;
}
.feature-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.feature-card:hover::before { opacity: 1; }

.feature-card__icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-5);
  font-size: 1.5rem;
}

.feature-card__icon--orange {
  background: var(--color-primary-light);
  color: var(--color-primary);
}
.feature-card__icon--blue {
  background: var(--color-secondary-light);
  color: var(--color-secondary);
}

.feature-card__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--space-3);
}

.feature-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ============= AI SCANNER SECTION ============= */

.ai-section {
  padding-block: clamp(var(--space-12), 8vw, var(--space-24));
}

.ai-section__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-8), 5vw, var(--space-16));
  align-items: center;
}

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

.ai-section__image {
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--color-divider);
}
.ai-section__image img {
  width: 100%;
  height: auto;
  display: block;
}

.ai-section__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.ai-feature-item {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.ai-feature-item__icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 1.1rem;
}

.ai-feature-item__text h4 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-base);
  margin-bottom: var(--space-1);
}
.ai-feature-item__text p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ============= STATS ============= */

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-6);
  padding-block: clamp(var(--space-8), 5vw, var(--space-16));
}

.stat {
  text-align: center;
  padding: var(--space-6);
}

.stat__number {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--space-2);
}

.stat__label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ============= CTA SECTION ============= */

.cta-section {
  padding-block: clamp(var(--space-12), 8vw, var(--space-24));
}

.cta-box {
  background: linear-gradient(135deg, var(--color-surface-2) 0%, var(--color-surface) 100%);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-xl);
  padding: clamp(var(--space-8), 5vw, var(--space-16));
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-box::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(ellipse at center, rgba(232, 134, 12, 0.06) 0%, transparent 60%);
  pointer-events: none;
}

.cta-box__title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
  position: relative;
}

.cta-box__desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 500px;
  margin-inline: auto;
  margin-bottom: var(--space-8);
  position: relative;
}

.cta-box__actions {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
}

/* ============= FOOTER ============= */

.footer {
  border-top: 1px solid var(--color-divider);
  padding-block: var(--space-12);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-8);
}

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

.footer__brand-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  max-width: 300px;
  margin-top: var(--space-4);
  line-height: 1.6;
}

.footer__heading {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.footer__links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__link {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-interactive);
}
.footer__link:hover { color: var(--color-primary); }

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-8);
  margin-top: var(--space-8);
  border-top: 1px solid var(--color-divider);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer__bottom a {
  color: var(--color-text-faint);
  text-decoration: none;
  transition: color var(--transition-interactive);
}
.footer__bottom a:hover { color: var(--color-primary); }

/* ============= LEGAL PAGES ============= */

.legal-page {
  padding-block: clamp(var(--space-8), 5vw, var(--space-16));
}

.legal-page h1 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 800;
  margin-bottom: var(--space-8);
}

.legal-page h2 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  margin-top: var(--space-8);
  margin-bottom: var(--space-4);
}

.legal-page h3 {
  font-size: var(--text-base);
  font-weight: 600;
  margin-top: var(--space-6);
  margin-bottom: var(--space-3);
}

.legal-page p,
.legal-page ul,
.legal-page li {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-4);
}

.legal-page ul {
  padding-left: var(--space-6);
  list-style: disc;
}

.legal-page a {
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-color: rgba(232, 134, 12, 0.3);
  text-underline-offset: 3px;
}
.legal-page a:hover {
  text-decoration-color: var(--color-primary);
}

/* ============= SCROLL ANIMATIONS ============= */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children */
.reveal-stagger > .reveal:nth-child(1) { transition-delay: 0ms; }
.reveal-stagger > .reveal:nth-child(2) { transition-delay: 80ms; }
.reveal-stagger > .reveal:nth-child(3) { transition-delay: 160ms; }
.reveal-stagger > .reveal:nth-child(4) { transition-delay: 240ms; }
.reveal-stagger > .reveal:nth-child(5) { transition-delay: 320ms; }
.reveal-stagger > .reveal:nth-child(6) { transition-delay: 400ms; }
.reveal-stagger > .reveal:nth-child(7) { transition-delay: 480ms; }
.reveal-stagger > .reveal:nth-child(8) { transition-delay: 560ms; }