/* ==========================================================================
   Harmony Digital Consults — Style System v2.0
   Premium, polished, professional EdTech website
   ========================================================================== */

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

: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 (4px base) */
  --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;

  /* Font */
  --font-body: 'Plus Jakarta Sans', 'Inter', system-ui, sans-serif;
  --font-display: 'Plus Jakarta Sans', 'Inter', system-ui, sans-serif;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.25rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 350ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 600ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Content widths */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;
}

/* --- Light Mode (Default) --- */
:root, [data-theme="light"] {
  --color-bg: #f5f7f7;
  --color-surface: #ffffff;
  --color-surface-alt: #eef3f3;
  --color-surface-raised: #ffffff;
  --color-border: #d0dada;
  --color-divider: #dce5e5;

  --color-text: #1a2e2f;
  --color-text-muted: #5a7172;
  --color-text-faint: #8fa3a4;

  --color-primary: #01696F;
  --color-primary-hover: #015358;
  --color-primary-active: #003d40;
  --color-primary-light: #e0f0f1;
  --color-primary-subtle: #c4e3e5;
  --color-primary-ultra-light: #f0f8f8;

  --color-accent: #0a8f8f;
  --color-accent-light: #e6f5f5;

  --shadow-xs: 0 1px 2px rgba(1,105,111,0.04);
  --shadow-sm: 0 1px 3px rgba(1,105,111,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 16px rgba(1,105,111,0.08), 0 2px 4px rgba(0,0,0,0.04);
  --shadow-lg: 0 12px 40px rgba(1,105,111,0.10), 0 4px 12px rgba(0,0,0,0.04);
  --shadow-xl: 0 24px 60px rgba(1,105,111,0.12);
}

/* --- Dark Mode --- */
[data-theme="dark"] {
  --color-bg: #0e1a1b;
  --color-surface: #142223;
  --color-surface-alt: #1a2c2d;
  --color-surface-raised: #1e3233;
  --color-border: #2a4243;
  --color-divider: #223738;

  --color-text: #d4e4e5;
  --color-text-muted: #8aabac;
  --color-text-faint: #5a7e7f;

  --color-primary: #2fb8b8;
  --color-primary-hover: #46cdcd;
  --color-primary-active: #1a9e9e;
  --color-primary-light: #1a2f30;
  --color-primary-subtle: #1e3536;
  --color-primary-ultra-light: #152627;

  --color-accent: #3cc8c8;
  --color-accent-light: #162b2b;

  --shadow-xs: 0 1px 2px rgba(0,0,0,0.2);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.35);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.4);
  --shadow-xl: 0 24px 60px rgba(0,0,0,0.45);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-bg: #0e1a1b;
    --color-surface: #142223;
    --color-surface-alt: #1a2c2d;
    --color-surface-raised: #1e3233;
    --color-border: #2a4243;
    --color-divider: #223738;
    --color-text: #d4e4e5;
    --color-text-muted: #8aabac;
    --color-text-faint: #5a7e7f;
    --color-primary: #2fb8b8;
    --color-primary-hover: #46cdcd;
    --color-primary-active: #1a9e9e;
    --color-primary-light: #1a2f30;
    --color-primary-subtle: #1e3536;
    --color-primary-ultra-light: #152627;
    --color-accent: #3cc8c8;
    --color-accent-light: #162b2b;
    --shadow-xs: 0 1px 2px rgba(0,0,0,0.2);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.35);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.4);
    --shadow-xl: 0 24px 60px rgba(0,0,0,0.45);
  }
}

/* ==========================================================================
   Base
   ========================================================================== */

html {
  -webkit-text-size-adjust: none;
  -moz-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-x: hidden;
}

body.nav-open {
  overflow: hidden;
}

img, picture, video, canvas, svg { display: block; max-width: 100%; height: auto; }
button { cursor: pointer; background: none; border: none; font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4, h5, h6 { text-wrap: balance; line-height: 1.2; }
p, li, figcaption { text-wrap: pretty; max-width: 72ch; }

::selection {
  background: rgba(1,105,111,0.2);
  color: var(--color-text);
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

a, button, [role="button"] {
  transition: color var(--transition-fast),
              background var(--transition-fast),
              border-color var(--transition-fast),
              box-shadow var(--transition-fast),
              transform var(--transition-fast),
              opacity var(--transition-fast);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border-width: 0;
}

/* ==========================================================================
   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-16), 8vw, var(--space-24));
}

.section-header {
  margin-bottom: clamp(var(--space-8), 4vw, var(--space-16));
  max-width: 640px;
}

.section-label {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}

.section-title {
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: var(--space-4);
  letter-spacing: -0.01em;
}

.section-desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 60ch;
  line-height: 1.7;
}

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

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

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(245,247,247,0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: transform 0.35s cubic-bezier(0.16,1,0.3,1),
              background 0.35s cubic-bezier(0.16,1,0.3,1),
              border-color 0.35s cubic-bezier(0.16,1,0.3,1),
              box-shadow 0.35s cubic-bezier(0.16,1,0.3,1);
}

.header--scrolled {
  border-bottom-color: var(--color-divider);
  box-shadow: var(--shadow-xs);
}

[data-theme="dark"] .header {
  background: rgba(14,26,27,0.85);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .header {
    background: rgba(14,26,27,0.85);
  }
}

.header--hidden {
  transform: translateY(-100%);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 3.5rem;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

@media (min-width: 768px) {
  .header__inner {
    height: 4rem;
    padding-inline: var(--space-8);
  }
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 700;
  font-size: var(--text-sm);
  color: var(--color-text);
  white-space: nowrap;
}

.header__logo-icon { flex-shrink: 0; }

.header__logo-text {
  display: none;
}

@media (min-width: 640px) {
  .header__logo-text { display: inline; }
}

.header__nav {
  display: none;
  align-items: center;
  gap: var(--space-6);
}

@media (min-width: 1024px) {
  .header__nav { display: flex; }
}

.header__nav a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  position: relative;
  padding-bottom: 2px;
}

.header__nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
  transition: width 0.3s cubic-bezier(0.16,1,0.3,1);
}

.header__nav a:hover,
.header__nav a.is-active {
  color: var(--color-primary);
}

.header__nav a:hover::after,
.header__nav a.is-active::after {
  width: 100%;
}

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

/* Theme toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
}

.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-alt);
}

/* Mobile menu toggle */
.menu-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
}

.menu-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-alt);
}

@media (min-width: 1024px) {
  .menu-toggle { display: none; }
}

/* Mobile menu */
.mobile-nav {
  position: fixed;
  top: 3.5rem;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-bg);
  z-index: 99;
  display: flex;
  flex-direction: column;
  padding: var(--space-8) var(--space-6);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-12px);
  transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease;
}

.mobile-nav.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.mobile-nav a {
  display: block;
  padding: var(--space-4) 0;
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-divider);
}

.mobile-nav a:hover {
  color: var(--color-primary);
}

@media (min-width: 1024px) {
  .mobile-nav { display: none !important; }
}

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

.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: calc(4rem + var(--space-8));
  padding-bottom: 0;
  overflow: hidden;
}

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

.hero__pattern {
  position: absolute;
  inset: 0;
  opacity: 0.03;
  background-image:
    repeating-linear-gradient(0deg, var(--color-primary) 0, var(--color-primary) 1px, transparent 1px, transparent 64px),
    repeating-linear-gradient(90deg, var(--color-primary) 0, var(--color-primary) 1px, transparent 1px, transparent 64px);
}

.hero__gradient {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 20% 40%, rgba(1,105,111,0.07), transparent 70%),
    radial-gradient(ellipse 60% 40% at 80% 70%, rgba(1,105,111,0.05), transparent 70%);
}

[data-theme="dark"] .hero__gradient {
  background:
    radial-gradient(ellipse 80% 50% at 20% 40%, rgba(47,184,184,0.05), transparent 70%),
    radial-gradient(ellipse 60% 40% at 80% 70%, rgba(47,184,184,0.04), transparent 70%);
}

.hero__layout {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  align-items: center;
  flex: 1;
}

@media (min-width: 1024px) {
  .hero__layout {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
  }
}

.hero__content {
  max-width: 620px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.375rem var(--space-4);
  border-radius: var(--radius-full);
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: var(--text-xs);
  font-weight: 600;
  margin-bottom: var(--space-6);
  letter-spacing: 0.01em;
}

.hero__badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-primary);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.hero__title {
  font-size: var(--text-3xl);
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: -0.025em;
  margin-bottom: var(--space-6);
  line-height: 1.08;
}

.hero__title em {
  font-style: normal;
  color: var(--color-primary);
  position: relative;
}

.hero__subtitle {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-8);
  max-width: 520px;
}

.hero__ctas {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

/* Hero Illustration */
.hero__illustration {
  display: none;
  justify-content: center;
  align-items: center;
}

@media (min-width: 1024px) {
  .hero__illustration {
    display: flex;
  }
}

.hero__illustration svg {
  width: 100%;
  max-width: 440px;
  height: auto;
}

/* Hero Stats Bar */
.hero__stats {
  position: relative;
  z-index: 1;
  margin-top: auto;
  padding-block: var(--space-6);
}

.hero__stats-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-6);
  padding: var(--space-5) var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
}

@media (min-width: 768px) {
  .hero__stats-inner {
    flex-wrap: nowrap;
    justify-content: center;
    gap: 0;
    padding: var(--space-5) var(--space-8);
  }
}

.hero__stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding-inline: var(--space-6);
  min-width: 0;
}

@media (max-width: 767px) {
  .hero__stat {
    padding-inline: var(--space-3);
    flex: 0 0 auto;
  }
}

.hero__stat-value {
  font-size: var(--text-sm);
  font-weight: 800;
  color: var(--color-primary);
  white-space: nowrap;
}

.hero__stat-label {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  font-weight: 500;
  white-space: nowrap;
}

.hero__stat-divider {
  width: 1px;
  background: var(--color-divider);
  align-self: stretch;
  display: none;
}

@media (min-width: 768px) {
  .hero__stat-divider { display: block; }
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.75rem 1.5rem;
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  white-space: nowrap;
  border: none;
  cursor: pointer;
  line-height: 1.2;
}

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

.btn--primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

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

.btn--outline {
  border: 1.5px solid var(--color-border);
  color: var(--color-text);
  background: var(--color-surface);
}

.btn--outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-1px);
}

.btn--full {
  width: 100%;
}

.btn__icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* ==========================================================================
   Trust Strip
   ========================================================================== */

.trust-strip {
  border-bottom: 1px solid var(--color-divider);
  padding-block: var(--space-5);
  background: var(--color-surface-alt);
}

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

@media (min-width: 768px) {
  .trust-strip__inner {
    flex-direction: row;
    gap: var(--space-8);
  }
}

.trust-strip__label {
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-faint);
  white-space: nowrap;
}

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

@media (min-width: 768px) {
  .trust-strip__logos {
    gap: var(--space-6);
  }
}

.trust-strip__logo {
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-text-faint);
  letter-spacing: 0.04em;
  white-space: nowrap;
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}

.trust-strip__logo:hover {
  opacity: 1;
}

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

.about__grid {
  display: grid;
  gap: var(--space-8);
}

@media (min-width: 768px) {
  .about__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
    align-items: start;
  }
}

.about__text p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
  line-height: 1.7;
}

.about__text p:last-of-type { margin-bottom: 0; }

.about__mission {
  padding: var(--space-5) var(--space-6);
  background: var(--color-primary-light);
  border-radius: var(--radius-lg);
  margin-top: var(--space-6);
  position: relative;
  overflow: hidden;
}

.about__mission::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--color-primary);
  border-radius: 2px;
}

.about__mission-label {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.about__mission p {
  color: var(--color-text);
  font-weight: 500;
  font-size: var(--text-sm);
  line-height: 1.6;
}

.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.stat-card {
  padding: var(--space-6);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-divider);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.stat-card__value {
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: var(--space-1);
}

.stat-card__label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-weight: 500;
}

/* ==========================================================================
   Products
   ========================================================================== */

.products-grid {
  display: grid;
  gap: var(--space-5);
  grid-template-columns: 1fr;
}

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

@media (min-width: 1024px) {
  .products-grid { grid-template-columns: repeat(3, 1fr); }
}

.product-card {
  display: flex;
  flex-direction: column;
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-xl);
  transition: box-shadow var(--transition-smooth), transform var(--transition-smooth), border-color var(--transition-smooth);
}

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

.product-card__icon-wrap {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
  background: var(--color-primary-light);
  border-radius: var(--radius-lg);
  color: var(--color-primary);
}

.product-card__icon-wrap svg,
.product-card__icon-wrap i {
  width: 24px;
  height: 24px;
}

.product-card__name {
  font-size: var(--text-base);
  font-weight: 700;
  margin-bottom: var(--space-2);
  color: var(--color-text);
}

.product-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
  flex: 1;
}

.product-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin-top: var(--space-4);
}

.product-card__tag {
  padding: 0.2rem 0.55rem;
  font-size: 0.7rem;
  font-weight: 600;
  background: var(--color-primary-ultra-light);
  color: var(--color-primary);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-primary-light);
}

.product-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-divider);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
  transition: gap var(--transition-fast);
}

.product-card__link:hover {
  gap: var(--space-2);
}

.product-card__link svg {
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.product-card__link:hover svg {
  transform: translateX(3px);
}

/* ==========================================================================
   Services
   ========================================================================== */

.services-grid {
  display: grid;
  gap: var(--space-5);
  grid-template-columns: 1fr;
}

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

@media (min-width: 1024px) {
  .services-grid { grid-template-columns: repeat(3, 1fr); }
}

.service-card {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-xl);
  transition: border-color var(--transition-smooth), box-shadow var(--transition-smooth), transform var(--transition-smooth);
}

.service-card:hover {
  border-color: var(--color-primary-subtle);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

.service-card__icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-light);
  border-radius: var(--radius-md);
  color: var(--color-primary);
}

.service-card__icon svg,
.service-card__icon i {
  width: 20px;
  height: 20px;
}

.service-card__content {
  flex: 1;
  min-width: 0;
}

.service-card__title {
  font-size: var(--text-sm);
  font-weight: 700;
  margin-bottom: var(--space-2);
  color: var(--color-text);
}

.service-card__desc {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* ==========================================================================
   Process / How We Work
   ========================================================================== */

.process-grid {
  display: grid;
  gap: var(--space-5);
  grid-template-columns: 1fr;
  position: relative;
}

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

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

/* Connector line between steps on desktop */
@media (min-width: 1024px) {
  .process-grid::before {
    content: '';
    position: absolute;
    top: 40px;
    left: calc(12.5% + 20px);
    right: calc(12.5% + 20px);
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary-subtle), var(--color-primary), var(--color-primary-subtle));
    opacity: 0.3;
    z-index: 0;
  }
}

.process-step {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-xl);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

.process-step:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.process-step__number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: #fff;
  font-size: var(--text-xs);
  font-weight: 800;
  margin-bottom: var(--space-4);
}

.process-step__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-inline: auto;
  width: 44px;
  height: 44px;
  background: var(--color-primary-light);
  border-radius: var(--radius-lg);
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.process-step__icon svg,
.process-step__icon i {
  width: 22px;
  height: 22px;
}

.process-step__title {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.process-step__desc {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.65;
  max-width: 280px;
  margin-inline: auto;
}

/* ==========================================================================
   Why Choose Us
   ========================================================================== */

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

@media (min-width: 768px) {
  .why__layout {
    grid-template-columns: repeat(2, 1fr);
  }
}

.why-card {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-6);
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-divider);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth);
}

.why-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
  border-color: var(--color-primary-subtle);
}

.why-card__marker {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.why-card__marker svg,
.why-card__marker i {
  width: 20px;
  height: 20px;
}

.why-card__title {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.why-card__desc {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* ==========================================================================
   Publications
   ========================================================================== */

.publications-grid {
  display: grid;
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .publications-grid { grid-template-columns: repeat(2, 1fr); }
}

.pub-card {
  display: flex;
  flex-direction: column;
  padding: var(--space-6) var(--space-8);
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-xl);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

.pub-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.pub-card__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.pub-card__badge svg,
.pub-card__badge i {
  width: 16px;
  height: 16px;
}

.pub-card__title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-3);
  line-height: 1.35;
}

.pub-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
  flex: 1;
}

.pub-card__meta {
  display: flex;
  gap: var(--space-4);
  margin-top: var(--space-5);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-divider);
}

.pub-card__meta-item {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  font-weight: 500;
}

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

.contact__layout {
  display: grid;
  gap: var(--space-8);
}

@media (min-width: 768px) {
  .contact__layout {
    grid-template-columns: 1.1fr 0.9fr;
    gap: var(--space-12);
  }
}

/* Contact Form */
.contact__form {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: 0.01em;
}

.form-input {
  width: 100%;
  padding: 0.75rem var(--space-4);
  font-size: var(--text-sm);
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  line-height: 1.5;
}

.form-input::placeholder {
  color: var(--color-text-faint);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(1,105,111,0.1);
}

[data-theme="dark"] .form-input:focus {
  box-shadow: 0 0 0 3px rgba(47,184,184,0.15);
}

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

/* Contact Info */
.contact__info-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  padding: var(--space-6) var(--space-8);
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-xl);
}

.contact__info-group {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.contact__info-icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-light);
  border-radius: var(--radius-md);
  color: var(--color-primary);
}

.contact__info-icon svg,
.contact__info-icon i {
  width: 18px;
  height: 18px;
}

.contact__info-label {
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-faint);
  margin-bottom: 0.125rem;
}

.contact__info-value {
  font-size: var(--text-sm);
  color: var(--color-text);
  line-height: 1.6;
}

.contact__info-value a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-color: rgba(1,105,111,0.3);
}

.contact__info-value a:hover {
  color: var(--color-primary-hover);
  text-decoration-color: var(--color-primary);
}

.contact__social {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.contact__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-md);
  background: var(--color-surface-alt);
  color: var(--color-text-muted);
  border: 1px solid var(--color-divider);
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.contact__social-link:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
  transform: translateY(-2px);
}

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

.footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
  padding-top: var(--space-12);
  padding-bottom: var(--space-6);
}

.footer__top {
  display: grid;
  gap: var(--space-8);
  margin-bottom: var(--space-8);
}

@media (min-width: 768px) {
  .footer__top {
    grid-template-columns: 2fr 1fr 1.5fr;
    gap: var(--space-12);
  }
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 700;
  font-size: var(--text-sm);
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.footer__brand svg { flex-shrink: 0; }

.footer__tagline {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
  font-style: italic;
}

.footer__rc {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.footer__nav-heading {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__links a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-weight: 500;
}

.footer__links a:hover {
  color: var(--color-primary);
}

.footer__contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.footer__contact-info a {
  color: var(--color-text-muted);
}

.footer__contact-info a:hover {
  color: var(--color-primary);
}

.footer__bottom {
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-divider);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-align: center;
}

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

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.12s; }
.reveal-delay-2 { transition-delay: 0.24s; }
.reveal-delay-3 { transition-delay: 0.36s; }
.reveal-delay-4 { transition-delay: 0.48s; }
.reveal-delay-5 { transition-delay: 0.6s; }

/* ==========================================================================
   Custom Scrollbar (webkit)
   ========================================================================== */

::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-faint);
}

/* ==========================================================================
   Lucide icon sizing consistency
   ========================================================================== */

[data-lucide] {
  display: inline-block;
  vertical-align: middle;
}