/* ============================================
   ICS Investment Management — 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;
  --space-32: 8rem;

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

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);

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

  /* Fonts */
  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body: 'Switzer', 'Helvetica Neue', sans-serif;
}

/* ============================================
   Color Palette — Navy + Gold (Investment)
   ============================================ */

:root,
[data-theme='light'] {
  --color-bg: #FAFAF8;
  --color-surface: #FFFFFF;
  --color-surface-2: #F5F4F1;
  --color-surface-offset: #EEEDEA;
  --color-border: #D8D5CE;
  --color-divider: #E3E0DA;

  --color-text: #1A1D2B;
  --color-text-muted: #5C6070;
  --color-text-faint: #9B9EAA;

  --color-primary: #0F2B4C;
  --color-primary-hover: #183D6A;
  --color-primary-light: #E8EDF4;

  --color-accent: #B8860B;
  --color-accent-hover: #9A7009;
  --color-accent-light: #FDF6E3;

  --shadow-sm: 0 1px 2px rgba(15, 43, 76, 0.06);
  --shadow-md: 0 4px 12px rgba(15, 43, 76, 0.08);
  --shadow-lg: 0 12px 32px rgba(15, 43, 76, 0.12);
}

[data-theme='dark'] {
  --color-bg: #0D1117;
  --color-surface: #161B22;
  --color-surface-2: #1C2129;
  --color-surface-offset: #21262D;
  --color-border: #30363D;
  --color-divider: #21262D;

  --color-text: #E6E8EB;
  --color-text-muted: #8B949E;
  --color-text-faint: #484F58;

  --color-primary: #A0C4E8;
  --color-primary-hover: #79ABD8;
  --color-primary-light: #1A2332;

  --color-accent: #D4A843;
  --color-accent-hover: #E0BC63;
  --color-accent-light: #2A2310;

  --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);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #0D1117;
    --color-surface: #161B22;
    --color-surface-2: #1C2129;
    --color-surface-offset: #21262D;
    --color-border: #30363D;
    --color-divider: #21262D;
    --color-text: #E6E8EB;
    --color-text-muted: #8B949E;
    --color-text-faint: #484F58;
    --color-primary: #A0C4E8;
    --color-primary-hover: #79ABD8;
    --color-primary-light: #1A2332;
    --color-accent: #D4A843;
    --color-accent-hover: #E0BC63;
    --color-accent-light: #2A2310;
    --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);
  }
}


/* ============================================
   Layout
   ============================================ */

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

@media (min-width: 768px) {
  .container {
    padding-inline: var(--space-8);
  }
}

.section {
  padding-block: clamp(var(--space-12), 6vw, var(--space-24));
}

/* ============================================
   Header / Nav
   ============================================ */

.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: oklch(from var(--color-bg) l c h / 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-divider);
  transition: box-shadow 0.3s var(--ease-out);
}

.header--scrolled {
  box-shadow: var(--shadow-sm);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

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

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

.header__logo-mark-img {
  width: 34px;
  height: auto;
  flex-shrink: 0;
}

.header__logo-text {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  line-height: 1.2;
}

.header__logo-text span {
  display: block;
  font-weight: 400;
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
  text-transform: none;
}

.header__nav {
  display: none;
  gap: var(--space-8);
  align-items: center;
}

@media (min-width: 768px) {
  .header__nav {
    display: flex;
  }
}

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

.header__nav a:hover {
  color: var(--color-text);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.theme-toggle {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  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-2);
}

.mobile-toggle {
  display: flex;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
}

@media (min-width: 768px) {
  .mobile-toggle {
    display: none;
  }
}

.mobile-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-2);
}

/* Mobile nav */
.mobile-nav {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-bg);
  z-index: 40;
  padding: var(--space-8) var(--space-4);
  flex-direction: column;
  gap: var(--space-6);
}

.mobile-nav.is-open {
  display: flex;
}

@media (min-width: 768px) {
  .mobile-nav {
    display: none !important;
  }
}

.mobile-nav a {
  font-size: var(--text-lg);
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-divider);
}

/* ============================================
   Hero
   ============================================ */

.hero {
  position: relative;
  min-height: 80vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--color-primary);
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.45;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(15, 43, 76, 0.85) 0%,
    rgba(15, 43, 76, 0.55) 50%,
    rgba(15, 43, 76, 0.7) 100%
  );
  z-index: 1;
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: 720px;
  padding-block: clamp(var(--space-16), 10vw, var(--space-32));
}

.hero__tagline {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}

.hero__title {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 400;
  color: #FFFFFF;
  margin-bottom: var(--space-6);
  line-height: 1.1;
}

.hero__subtitle {
  font-size: var(--text-base);
  color: rgba(255, 255, 255, 0.78);
  max-width: 560px;
  margin-bottom: var(--space-8);
  line-height: 1.7;
}

.hero__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  background: var(--color-accent);
  color: #FFFFFF;
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-sm);
  letter-spacing: 0.02em;
  transition: background var(--transition-interactive), transform var(--transition-interactive), box-shadow var(--transition-interactive);
}

.hero__cta:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(184, 134, 11, 0.3);
}

.hero__cta:active {
  transform: translateY(0);
}

.hero__cta svg {
  width: 16px;
  height: 16px;
}

/* ============================================
   Verticals / Services Grid
   ============================================ */

.verticals {
  background: var(--color-surface-2);
}

.verticals__header {
  text-align: center;
  margin-bottom: clamp(var(--space-8), 4vw, var(--space-16));
}

.verticals__label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}

.verticals__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: var(--color-text);
}

.verticals__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .verticals__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }
}

.vertical-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  text-decoration: none;
  color: var(--color-text);
  border: 1px solid var(--color-border);
  transition: transform var(--transition-interactive), box-shadow var(--transition-interactive), border-color var(--transition-interactive);
  cursor: pointer;
}

.vertical-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent);
}

.vertical-card:active {
  transform: translateY(-1px);
}

.vertical-card__image {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.vertical-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-out);
}

.vertical-card:hover .vertical-card__image img {
  transform: scale(1.04);
}

.vertical-card__image-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15, 43, 76, 0.7) 0%, transparent 60%);
}

.vertical-card__body {
  padding: var(--space-6) var(--space-6) var(--space-8);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.vertical-card__experience {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}

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

.vertical-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: var(--space-5);
  flex: 1;
}

.vertical-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.vertical-card__tag {
  font-size: 0.75rem;
  font-weight: 500;
  padding: var(--space-1) var(--space-3);
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.vertical-card__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-accent);
  margin-top: auto;
}

.vertical-card__cta svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-interactive);
}

.vertical-card:hover .vertical-card__cta svg {
  transform: translateX(4px);
}

/* ============================================
   Detail Sections (Investment / Energy)
   ============================================ */

.detail {
  scroll-margin-top: 80px;
}

.detail__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(var(--space-8), 4vw, var(--space-16));
  align-items: center;
}

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

.detail__image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4 / 3;
}

.detail__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.detail__content {
  max-width: 540px;
}

.detail__label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}

.detail__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.detail__text {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-6);
}

.detail__list {
  list-style: none;
  display: grid;
  gap: var(--space-4);
}

.detail__list li {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.detail__list-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--color-accent);
  margin-top: 2px;
}

/* Reverse layout for second section */
@media (min-width: 768px) {
  .detail--reverse .detail__inner {
    direction: rtl;
  }
  .detail--reverse .detail__inner > * {
    direction: ltr;
  }
}

/* ============================================
   Stats Bar
   ============================================ */

.stats {
  background: var(--color-primary);
  color: #FFFFFF;
}

[data-theme='dark'] .stats {
  background: var(--color-surface-2);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.stats__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  text-align: center;
}

@media (min-width: 640px) {
  .stats__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .stats__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.stat__value {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 400;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}

[data-theme='dark'] .stat__value {
  color: var(--color-accent);
}

.stat__label {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.04em;
  opacity: 0.8;
}

[data-theme='dark'] .stat__label {
  color: var(--color-text-muted);
}

/* ============================================
   About
   ============================================ */

.about__inner {
  max-width: var(--content-default);
  margin-inline: auto;
  text-align: center;
}

.about__label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}

.about__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: var(--color-text);
  margin-bottom: var(--space-6);
}

.about__text {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.75;
  max-width: 680px;
  margin-inline: auto;
}

/* ============================================
   Contact / Footer
   ============================================ */

.contact {
  background: var(--color-surface-2);
}

.contact__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(var(--space-8), 4vw, var(--space-16));
  align-items: start;
}

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

.contact__label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}

.contact__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.contact__text {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-6);
}

.contact__info {
  display: grid;
  gap: var(--space-5);
}

.contact__item {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
}

.contact__icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--color-accent);
  margin-top: 2px;
}

.contact__item-label {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: var(--space-1);
}

.contact__item-value {
  font-size: var(--text-sm);
  color: var(--color-text);
  line-height: 1.5;
}

.contact__item-value a {
  color: var(--color-primary);
  text-decoration: none;
}

.contact__item-value a:hover {
  color: var(--color-accent);
}

/* Contact map placeholder */
.contact__map {
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-surface-offset);
  border: 1px solid var(--color-border);
}

.contact__map iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

/* Footer */
.footer {
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.7);
  padding-block: var(--space-8);
}

[data-theme='dark'] .footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}

.footer__inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  align-items: center;
  text-align: center;
}

@media (min-width: 768px) {
  .footer__inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

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

[data-theme='dark'] .footer__logo {
  color: var(--color-text);
}

.footer__logo-text {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.footer__copy {
  font-size: var(--text-xs);
}

[data-theme='dark'] .footer__copy {
  color: var(--color-text-muted);
}

/* ============================================
   Scroll Animations
   ============================================ */

.fade-in {
  opacity: 1;
}

@supports (animation-timeline: scroll()) {
  .fade-in {
    opacity: 0;
    animation: reveal-fade linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 100%;
  }
}

@keyframes reveal-fade {
  to {
    opacity: 1;
  }
}

/* ============================================
   Blur-up Image Reveal
   ============================================ */

.reveal-img {
  opacity: 0;
  transition: opacity 0.4s ease;
}

.blur-placeholder {
  transition: opacity 0.4s ease;
}

.vertical-card__image,
.detail__image {
  position: relative;
  overflow: hidden;
}

.hero__bg picture img {
  position: relative;
  z-index: 1;
}

/* ============================================
   Skip Link
   ============================================ */

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  background: var(--color-primary);
  color: #fff;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  z-index: 100;
  text-decoration: none;
}

.skip-link:focus {
  top: var(--space-2);
}