/* ================================================================
   INTELLIHLTH — STYLES
   Warm, modern aesthetic with personality.
   Mobile-first. All values use CSS custom properties.
   ================================================================ */

/* ==================== CUSTOM PROPERTIES ==================== */

:root {
  /* Colors — warm palette */
  --color-primary: #1B1F2A;
  --color-primary-light: #2D3142;
  --color-accent: #3D8B7A;
  --color-accent-light: #E8F5F1;
  --color-accent-warm: #D4A843;
  --color-text: #1E1E2A;
  --color-text-light: #6B7280;
  --color-bg: #FAF7F2;
  --color-bg-alt: #FFFFFF;
  --color-bg-warm: #F0EDE6;
  --color-white: #ffffff;
  --color-error: #DC3545;
  --color-error-glow: rgba(220, 53, 69, 0.12);

  /* Service card tint backgrounds — rich but still readable */
  --card-tint-1: #DCEFD8;
  --card-tint-2: #FAE8C8;
  --card-tint-3: #D6E7F5;
  --card-tint-4: #E4DBEF;
  --card-tint-5: #FADDD3;
  --card-tint-6: #D2EDE6;
  --card-tint-7: #F5E6C4;
  --card-tint-8: #F0D9E0;

  /* Typography — three font roles */
  --font-display: 'Satoshi', 'Segoe UI', system-ui, sans-serif;
  --font-body: 'DM Sans', 'Segoe UI', system-ui, sans-serif;
  --font-accent: 'DM Serif Display', Georgia, serif;
  --font-size-base: 1rem;
  --font-size-sm: 0.875rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 2.25rem;
  --font-size-hero: 3rem;
  --line-height-body: 1.7;
  --line-height-heading: 1.15;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 3rem;
  --spacing-xl: 5rem;
  --spacing-2xl: 7rem;
  --section-padding: var(--spacing-xl) var(--spacing-md);

  /* Layout */
  --max-width: 1200px;
  --nav-height: 72px;
  --border-radius: 16px;
  --border-radius-lg: 24px;
  --border-radius-pill: 100px;

  /* Shadows — warm and soft */
  --shadow-sm: 0 1px 3px rgba(30, 30, 42, 0.04);
  --shadow-card: 0 2px 12px rgba(30, 30, 42, 0.06);
  --shadow-card-hover: 0 8px 30px rgba(30, 30, 42, 0.1);
  --shadow-nav: 0 1px 12px rgba(30, 30, 42, 0.06);

  /* Transitions */
  --transition-base: 0.3s ease;
  --transition-smooth: 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  --reveal-duration: 700ms;
  --reveal-easing: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ==================== RESET & BASE ==================== */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: var(--line-height-body);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

address {
  font-style: normal;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input,
textarea {
  font-family: inherit;
  font-size: inherit;
}

/* ==================== UTILITY ==================== */

.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--spacing-md);
}

.section {
  position: relative;
  padding: var(--section-padding);
}

.section-header {
  margin-bottom: calc(var(--spacing-lg) + 0.5rem);
}

.section-eyebrow {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-bottom: var(--spacing-xs);
}

.section-eyebrow-light {
  color: var(--color-accent-warm);
}

.section-heading {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--font-size-2xl);
  line-height: var(--line-height-heading);
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
}

.section-heading-light {
  color: var(--color-white);
}

.section-subheading {
  font-size: var(--font-size-lg);
  color: var(--color-text-light);
  max-width: 600px;
}

.section-subheading-light {
  color: rgba(255, 255, 255, 0.65);
}

/* Serif italic accent on keywords */
.serif-accent {
  font-family: var(--font-accent);
  font-style: italic;
  font-weight: 400;
}

/* ==================== SCROLL PROGRESS BAR ==================== */

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: var(--color-accent);
  z-index: 1001;
}

/* ==================== NAVIGATION ==================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: background-color var(--transition-base),
              box-shadow var(--transition-base);
  background-color: transparent;
}

.site-header.nav-scrolled {
  background-color: rgba(250, 247, 242, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow-nav);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin-inline: auto;
  padding: 0 var(--spacing-md);
  height: var(--nav-height);
}

.nav-logo {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--font-size-xl);
  color: var(--color-text);
  z-index: 1001;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.nav-links a {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  padding: var(--spacing-xs) 0;
  transition: color var(--transition-base);
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--color-text);
}

.site-header:not(.nav-scrolled) .nav-logo {
  color: var(--color-white);
}

.site-header:not(.nav-scrolled) .nav-links a {
  color: rgba(255, 255, 255, 0.85);
}

.site-header:not(.nav-scrolled) .nav-links a:hover,
.site-header:not(.nav-scrolled) .nav-links a:focus-visible {
  color: var(--color-white);
}

.nav-links .nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: 0.7rem 1.5rem;
  border-radius: var(--border-radius-pill);
  transition: background-color var(--transition-base), color var(--transition-base);
}

.nav-links .nav-cta .btn-arrow {
  transition: transform var(--transition-base);
  flex-shrink: 0;
}

.nav-links .nav-cta:hover .btn-arrow,
.nav-links .nav-cta:focus-visible .btn-arrow {
  transform: translateX(3px);
}

.nav-links .nav-cta:hover,
.nav-links .nav-cta:focus-visible {
  background-color: var(--color-accent);
  color: var(--color-white);
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  z-index: 1001;
}

.nav-toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition-base),
              opacity var(--transition-base);
}

.nav-toggle.active .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

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

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background-color: var(--color-bg);
  overflow: hidden;
  padding: calc(var(--nav-height) + var(--spacing-lg)) var(--spacing-md) var(--spacing-xl);
}

/* Hero background image */
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center right;
}

/* Gradient overlay: solid on left, fades to transparent on right */
.hero-gradient {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    to right,
    var(--color-bg) 0%,
    var(--color-bg) 20%,
    rgba(250, 247, 242, 0.85) 35%,
    rgba(250, 247, 242, 0.4) 50%,
    transparent 65%
  );
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: var(--max-width);
  width: 100%;
  margin-inline: auto;
  padding-inline: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.hero-text {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.hero-eyebrow {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: var(--spacing-xs);
}

.hero-headline {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--font-size-hero);
  line-height: var(--line-height-heading);
  color: var(--color-text);
  max-width: 650px;
  margin-bottom: var(--spacing-sm);
}

.hero-subheadline {
  font-size: var(--font-size-lg);
  color: var(--color-text-light);
  max-width: 520px;
  line-height: var(--line-height-body);
  margin-bottom: var(--spacing-md);
}

.hero-actions {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}



/* ==================== SERVICES TICKER ==================== */

@keyframes ticker-scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

.ticker {
  overflow: hidden;
  background-color: var(--color-bg-warm);
  padding: 1.125rem 0;
  border-top: 1px solid rgba(30, 30, 42, 0.06);
  border-bottom: 1px solid rgba(30, 30, 42, 0.06);
}

.ticker-track {
  display: flex;
  gap: 1.5rem;
  white-space: nowrap;
  animation: ticker-scroll 10s linear infinite;
  will-change: transform;
}

.ticker-item {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--font-size-lg);
  color: var(--color-text);
}

.ticker-sep {
  font-weight: 700;
  font-size: var(--font-size-lg);
  color: var(--color-accent);
}

@media (prefers-reduced-motion: reduce) {
  .ticker-track {
    animation: none;
  }
}

/* ==================== BUTTONS ==================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--font-size-sm);
  padding: 0.8rem 1.75rem;
  border-radius: var(--border-radius-pill);
  cursor: pointer;
  transition: all var(--transition-base);
  border: none;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background-color: var(--color-accent);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(61, 139, 122, 0.25);
}

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

/* Button arrow icon */
.btn-arrow {
  transition: transform var(--transition-base);
  flex-shrink: 0;
}

.btn:hover .btn-arrow,
.btn:focus-visible .btn-arrow {
  transform: translateX(3px);
}


.btn-ghost {
  background-color: transparent;
  color: var(--color-text);
  border: 1.5px solid rgba(30, 30, 42, 0.15);
}

.btn-ghost:hover,
.btn-ghost:focus-visible {
  border-color: var(--color-text);
  background-color: var(--color-white);
}

/* ==================== ABOUT SECTION ==================== */

.section-about {
  background-color: var(--color-bg-alt);
}

.about-layout {
  display: grid;
  gap: var(--spacing-lg);
}

.about-text .section-heading {
  max-width: 500px;
}

.about-paragraph {
  font-size: var(--font-size-base);
  color: var(--color-text-light);
  line-height: var(--line-height-body);
  margin-bottom: var(--spacing-sm);
}

.about-paragraph:last-child {
  margin-bottom: 0;
}

/* Stats strip — 4-item horizontal layout */
.stat-strip {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.5rem;
}

.stat-icon-circle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  margin-bottom: 0.25rem;
}

.stat-icon-circle svg {
  width: 24px;
  height: 24px;
}

.stat-icon-circle--teal {
  background-color: var(--color-accent-light);
  color: var(--color-accent);
}

.stat-icon-circle--green {
  background-color: var(--card-tint-1);
  color: #3d7a3d;
}

.stat-icon-circle--gold {
  background-color: var(--card-tint-7);
  color: #8B6914;
}

.stat-icon-circle--blue {
  background-color: var(--card-tint-3);
  color: #3a6fa8;
}

.stat-title {
  display: block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--font-size-xl);
  color: var(--color-text);
  margin-bottom: 0.125rem;
}

.stat-label {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  line-height: 1.4;
}

/* ==================== SERVICES SECTION ==================== */

.section-services {
  background-color: var(--color-bg);
}

.services-grid {
  display: grid;
  gap: var(--spacing-md);
}

.service-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 2rem;
  border-radius: var(--border-radius-lg);
  transition: transform var(--transition-base),
              box-shadow var(--transition-base);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

/* Per-card color tints */
.service-card--tint-1 { background-color: var(--card-tint-1); }
.service-card--tint-2 { background-color: var(--card-tint-2); }
.service-card--tint-3 { background-color: var(--card-tint-3); }
.service-card--tint-4 { background-color: var(--card-tint-4); }
.service-card--tint-5 { background-color: var(--card-tint-5); }
.service-card--tint-6 { background-color: var(--card-tint-6); }
.service-card--tint-7 { background-color: var(--card-tint-7); }
.service-card--tint-8 { background-color: var(--card-tint-8); }

.service-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  background-color: rgba(255, 255, 255, 0.7);
  border-radius: 50%;
  margin-bottom: var(--spacing-md);
  color: var(--color-accent);
}

.service-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--font-size-lg);
  color: var(--color-text);
  margin-bottom: 0.5rem;
}

.service-description {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  line-height: 1.6;
  flex-grow: 1;
}

.services-swipe-hint {
  display: none;
}

/* ==================== PARTNERS SECTION ==================== */

.section-partners {
  background-color: var(--color-primary);
  padding: var(--spacing-2xl) var(--spacing-md);
}

/* Partner grid layout */
.partner-grid {
  display: grid;
  gap: var(--spacing-md);
}

/* 3D flip card container */
.partner-card {
  perspective: 1000px;
  min-height: 360px;
}

.partner-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 360px;
  transition: transform 0.8s cubic-bezier(0.4, 0.0, 0.2, 1);
  transform-style: preserve-3d;
  -webkit-transform-style: preserve-3d;
}

.partner-card:hover .partner-card-inner {
  transform: rotateY(180deg);
  transition-delay: 0.15s;
}

.partner-card.flipped .partner-card-inner {
  transform: rotateY(180deg);
}

/* Shared face styles */
.partner-card-front,
.partner-card-back {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: var(--border-radius-lg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* Front face */
.partner-card-front {
  background-color: var(--color-white);
  padding: 2rem;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 1rem;
}

.partner-card-hint {
  position: absolute;
  top: 1rem;
  right: 1rem;
  color: var(--color-text-light);
  opacity: 0.4;
}

.partner-card-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.partner-card-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--font-size-lg);
  color: var(--color-text);
}

/* Back face */
.partner-card-back {
  transform: rotateY(180deg);
  padding: 1.25rem;
  justify-content: center;
  gap: 0.75rem;
}

.partner-card-back-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--font-size-sm);
  color: var(--color-white);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.partner-card-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.partner-card-list li {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.4;
  padding-left: 1rem;
  position: relative;
}

.partner-card-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.45em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.5);
}

.partner-card-stat {
  font-size: 0.8125rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.8);
  padding-top: 0.625rem;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  margin-top: auto;
  font-style: italic;
}

/* Card accent colors — Front icon backgrounds + top border */
.partner-card-front--1 { border-top: 4px solid var(--color-accent); }
.partner-card-front--1 .partner-card-icon { background-color: var(--color-accent-light); color: var(--color-accent); }

.partner-card-front--2 { border-top: 4px solid var(--color-accent-warm); }
.partner-card-front--2 .partner-card-icon { background-color: #FBF4E4; color: #8B6914; }

.partner-card-front--3 { border-top: 4px solid #9B8FD4; }
.partner-card-front--3 .partner-card-icon { background-color: #F0ECFB; color: #6B5CA5; }

.partner-card-front--4 { border-top: 4px solid #5BA4CF; }
.partner-card-front--4 .partner-card-icon { background-color: #E8F4FA; color: #2E7EAF; }

.partner-card-front--5 { border-top: 4px solid #6BAF7A; }
.partner-card-front--5 .partner-card-icon { background-color: #EDF7EF; color: #3D7A4C; }

/* Card accent colors — Back face backgrounds (warm mid-tones) */
.partner-card-back--1 { background-color: #3D8B7A; }
.partner-card-back--2 { background-color: #B8883B; }
.partner-card-back--3 { background-color: #7B6BAE; }
.partner-card-back--4 { background-color: #4A8DB5; }
.partner-card-back--5 { background-color: #5A9A6B; }

/* ==================== CONTACT SECTION ==================== */

.section-contact {
  background-color: var(--color-bg-alt);
}

.contact-grid {
  display: grid;
  gap: var(--spacing-lg);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.form-row {
  display: grid;
  gap: var(--spacing-sm);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.form-group label {
  font-weight: 500;
  font-size: var(--font-size-sm);
  color: var(--color-text);
}

.required {
  color: var(--color-accent);
}

.optional {
  color: var(--color-text-light);
  font-weight: 400;
}

.form-group input,
.form-group textarea {
  padding: 0.75rem var(--spacing-sm);
  border: 1.5px solid rgba(30, 30, 42, 0.1);
  border-radius: var(--border-radius);
  background-color: var(--color-bg);
  color: var(--color-text);
  transition: border-color var(--transition-base),
              box-shadow var(--transition-base);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(30, 30, 42, 0.3);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(61, 139, 122, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-group input.field-error,
.form-group textarea.field-error {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px var(--color-error-glow);
}

.btn-submit {
  align-self: flex-start;
  margin-top: var(--spacing-xs);
  padding: 0.875rem 2rem;
  font-size: var(--font-size-base);
}

.form-success {
  margin-top: var(--spacing-sm);
  padding: var(--spacing-sm);
  background-color: var(--color-accent-light);
  border: 1px solid var(--color-accent);
  border-radius: var(--border-radius);
  color: var(--color-accent);
  font-weight: 500;
}

.form-error {
  margin-top: var(--spacing-sm);
  padding: var(--spacing-sm);
  background-color: rgba(220, 53, 69, 0.06);
  border: 1px solid var(--color-error);
  border-radius: var(--border-radius);
  color: var(--color-error);
  font-weight: 500;
}

.btn-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* Contact info */
.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.partnership-cta {
  background-color: var(--color-accent-light);
  border-radius: var(--border-radius-lg);
  padding: 1.5rem;
  margin-bottom: var(--spacing-md);
  border-left: 4px solid var(--color-accent);
}

.partnership-cta-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: var(--spacing-sm);
}

.contact-info-heading {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--font-size-xl);
  color: var(--color-text);
  margin-bottom: var(--spacing-xs);
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  color: var(--color-text);
}

.contact-info-item svg {
  flex-shrink: 0;
  color: var(--color-accent);
  margin-top: 2px;
}

.contact-info-item a {
  transition: color var(--transition-base);
}

.contact-info-item a:hover,
.contact-info-item a:focus-visible {
  color: var(--color-accent);
}

.contact-note {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  line-height: var(--line-height-body);
  padding-top: var(--spacing-sm);
  border-top: 1px solid rgba(30, 30, 42, 0.08);
}

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

.site-footer {
  background-color: var(--color-bg-warm);
  padding: var(--spacing-xl) var(--spacing-md) var(--spacing-lg);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
  text-align: center;
}

.footer-logo {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--font-size-xl);
  color: var(--color-text);
}

.footer-links {
  display: flex;
  gap: var(--spacing-md);
}

.footer-links a {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  transition: color var(--transition-base);
}

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

.footer-contact {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

.footer-contact a {
  transition: color var(--transition-base);
}

.footer-contact a:hover {
  color: var(--color-accent);
}

.footer-separator {
  opacity: 0.4;
}

.footer-bottom {
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(30, 30, 42, 0.08);
  width: 100%;
  text-align: center;
}

.footer-copyright {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

.footer-tagline {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  opacity: 0.6;
  margin-top: 0.25rem;
}

/* ==================== SCROLL REVEAL ==================== */

@keyframes fadeSlideUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
}

.reveal.revealed {
  animation: fadeSlideUp var(--reveal-duration) var(--reveal-easing) forwards;
}

/* ==================== RESPONSIVE — TABLET (768px+) ==================== */

@media (min-width: 768px) {

  :root {
    --font-size-hero: 3.5rem;
    --font-size-3xl: 2.75rem;
    --font-size-2xl: 2.5rem;
  }

  /* Hero: single column on tablet */
  .hero-content {
    flex-direction: column;
  }

  /* About: side by side */
  .about-layout {
    grid-template-columns: 1.2fr 1fr;
    align-items: start;
  }

  /* Stats: 2x2 grid on tablet */
  .stat-strip {
    grid-template-columns: 1fr 1fr;
  }

  /* Services: 2 columns */
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Partners: 3 columns on tablet */
  .partner-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  /* Contact: two columns */
  .contact-grid {
    grid-template-columns: 1.2fr 1fr;
    align-items: start;
  }

  .form-row {
    grid-template-columns: 1fr 1fr;
  }
}

/* ==================== RESPONSIVE — LAPTOP (1024px+) ==================== */

@media (min-width: 1024px) {

  :root {
    --font-size-hero: 4.25rem;
    --font-size-2xl: 3rem;
    --section-padding: var(--spacing-2xl) var(--spacing-md);
  }

  .hero {
    min-height: 92vh;
  }

  .hero-text {
    max-width: 55%;
  }

  /* Services: 4 columns */
  .services-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  /* Partners: 5 columns on laptop+ */
  .partner-grid {
    grid-template-columns: repeat(5, 1fr);
    gap: var(--spacing-sm);
  }

  .partner-card {
    min-height: 340px;
  }

  .partner-card-inner {
    min-height: 340px;
  }

  .partner-card-back {
    padding: 1rem;
  }

  .partner-card-list li {
    font-size: 0.75rem;
  }

  .partner-card-stat {
    font-size: 0.75rem;
  }
}

/* ==================== RESPONSIVE — DESKTOP (1440px+) ==================== */

@media (min-width: 1440px) {

  :root {
    --font-size-hero: 5rem;
    --max-width: 1280px;
  }

  .container {
    padding-inline: var(--spacing-lg);
  }
}

/* ==================== RESPONSIVE — MOBILE (<768px) ==================== */

@media (max-width: 767px) {

  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: 0;
    width: 280px;
    height: 100vh;
    height: 100dvh;
    flex-direction: column;
    background-color: var(--color-bg-alt);
    padding: calc(var(--nav-height) + var(--spacing-md)) var(--spacing-md) var(--spacing-md);
    gap: var(--spacing-xs);
    transform: translateX(100%);
    transition: transform var(--transition-smooth);
    box-shadow: -8px 0 30px rgba(30, 30, 42, 0.08);
    align-items: flex-start;
  }

  .nav-links.nav-open {
    transform: translateX(0);
  }

  .nav-links a {
    font-size: var(--font-size-lg);
    color: var(--color-text);
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid rgba(30, 30, 42, 0.06);
    width: 100%;
  }

  .nav-links .nav-cta {
    margin-top: var(--spacing-sm);
    text-align: center;
    width: auto;
  }

  .hero-headline {
    font-size: var(--font-size-2xl);
  }

  /* Nav: white logo + hamburger over dark hero on mobile */
  .site-header:not(.nav-scrolled) .nav-logo {
    color: var(--color-white);
  }

  .site-header:not(.nav-scrolled) .nav-toggle-bar {
    background-color: var(--color-white);
  }

  .site-header:not(.nav-scrolled) .nav-toggle.active .nav-toggle-bar {
    background-color: var(--color-text);
  }

  .site-header:not(.nav-scrolled) .nav-links.nav-open a:not(.nav-cta) {
    color: var(--color-text);
  }

  .site-header:not(.nav-scrolled) .nav-links.nav-open a:not(.nav-cta):hover,
  .site-header:not(.nav-scrolled) .nav-links.nav-open a:not(.nav-cta):focus-visible {
    color: var(--color-accent);
  }

  /* Hero: dark overlay on mobile so white text is readable over image */
  .hero-gradient {
    background: linear-gradient(
      to bottom,
      rgba(20, 20, 30, 0.7) 0%,
      rgba(20, 20, 30, 0.55) 50%,
      rgba(20, 20, 30, 0.3) 100%
    );
  }

  .hero-eyebrow {
    color: var(--color-accent);
    font-size: 0.75rem;
  }

  .hero-headline {
    color: var(--color-white);
  }

  .hero-subheadline {
    color: rgba(255, 255, 255, 0.85);
  }

  .hero .btn-ghost {
    color: var(--color-white);
    border-color: rgba(255, 255, 255, 0.4);
  }

  .hero .btn-ghost:hover,
  .hero .btn-ghost:focus-visible {
    border-color: var(--color-white);
    background-color: rgba(255, 255, 255, 0.1);
  }

  /* Ticker: smaller text on mobile */
  .ticker-item,
  .ticker-sep {
    font-size: var(--font-size-base);
  }

  /* Services: horizontal smooth scroll carousel */
  .services-grid {
    display: flex;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) 0 var(--spacing-sm);
    scrollbar-width: none;
    overscroll-behavior-y: contain;
    touch-action: pan-x;
  }

  .services-grid::-webkit-scrollbar {
    display: none;
  }

  .service-card {
    flex: 0 0 280px;
  }

  .services-swipe-hint {
    display: block;
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin-top: var(--spacing-sm);
    opacity: 0.7;
  }

  /* Disable hover effects on touch devices */
  .service-card:hover {
    transform: none;
    box-shadow: none;
  }

  /* Partners: reduce min-height on mobile (wider cards need less height) */
  .partner-card,
  .partner-card-inner {
    min-height: 300px;
  }

  /* Partners: disable hover flip on mobile, use tap instead */
  .partner-card:hover .partner-card-inner {
    transform: none;
  }

  .partner-card.flipped .partner-card-inner {
    transform: rotateY(180deg);
  }

}

/* Body scroll lock */
body.nav-locked {
  overflow: hidden;
}