/* ══════════════════════════════════════════════
   BrandsWeb 品牌聯網 — Main Stylesheet
   AEO/GEO Optimized Homepage v1.0
   ══════════════════════════════════════════════ */

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

:root {
  /* Brand Colors */
  --color-primary:    #1a1a2e;   /* Deep Navy */
  --color-accent:     #c8a96e;   /* Gold */
  --color-accent-dk:  #a8894e;
  --color-surface:    #f8f7f4;   /* Warm Off-White */
  --color-surface-2:  #eeece7;
  --color-text:       #1f1f1f;
  --color-text-muted: #6b6b6b;
  --color-border:     #ddd8cf;
  --color-white:      #ffffff;

  /* Typography */
  --font-body: 'Noto Sans TC', 'Inter', sans-serif;
  --font-display: 'Inter', 'Noto Sans TC', sans-serif;

  /* Spacing */
  --space-xs:  0.5rem;
  --space-sm:  1rem;
  --space-md:  1.5rem;
  --space-lg:  2.5rem;
  --space-xl:  4rem;
  --space-2xl: 6rem;

  /* Layout */
  --max-width: 1200px;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  /* Transitions */
  --transition: 0.25s ease;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-white);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}

ul { list-style: none; }

/* ── Accessibility ── */
:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 3px;
}

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

/* ── Container ── */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* ── Section Base ── */
.section {
  padding: var(--space-2xl) 0;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--space-xl);
}

.section-tag {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  background: rgba(200, 169, 110, 0.12);
  padding: 0.35em 1em;
  border-radius: 100px;
  margin-bottom: var(--space-sm);
}

.section-header h2 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.25;
  margin-bottom: var(--space-sm);
}

.section-desc {
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  line-height: 1.8;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  padding: 0.875em 2em;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  text-decoration: none;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-primary);
  border-color: var(--color-accent);
}
.btn-primary:hover {
  background: var(--color-accent-dk);
  border-color: var(--color-accent-dk);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(200, 169, 110, 0.35);
}

.btn-outline {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255,255,255,0.55);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.12);
  border-color: var(--color-white);
}

.btn-full { width: 100%; justify-content: center; }

/* ══════════════════════════════════════════════
   HEADER & NAVBAR
   ══════════════════════════════════════════════ */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  transition: background var(--transition), box-shadow var(--transition);
}

.site-header.scrolled {
  background: rgba(26, 26, 46, 0.97);
  backdrop-filter: blur(12px);
  box-shadow: 0 2px 20px rgba(0,0,0,0.25);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.25rem var(--space-md);
  gap: var(--space-lg);
}

.logo {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
  color: var(--color-white);
}

.logo-text {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--color-white);
}

.logo-sub {
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  font-weight: 500;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-menu a {
  display: inline-block;
  padding: 0.5em 0.875em;
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255,255,255,0.85);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.nav-menu a:hover {
  color: var(--color-white);
  background: rgba(255,255,255,0.08);
}

.nav-cta {
  background: var(--color-accent) !important;
  color: var(--color-primary) !important;
  font-weight: 700 !important;
  padding: 0.5em 1.25em !important;
}

.nav-cta:hover {
  background: var(--color-accent-dk) !important;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ══════════════════════════════════════════════
   HERO SECTION
   ══════════════════════════════════════════════ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #0d0d1a 0%, #1a1a2e 45%, #16213e 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 70% 40%, rgba(200,169,110,0.12) 0%, transparent 60%),
    radial-gradient(ellipse 40% 60% at 20% 70%, rgba(100,120,200,0.08) 0%, transparent 60%);
  pointer-events: none;
}

.hero-bg-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(200,169,110,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(200,169,110,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  opacity: 0.5;
}

.hero-content {
  position: relative;
  z-index: 1;
  padding-top: 6rem;
  padding-bottom: var(--space-2xl);
  max-width: 860px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-accent);
  background: rgba(200,169,110,0.12);
  border: 1px solid rgba(200,169,110,0.25);
  border-radius: 100px;
  padding: 0.4em 1.2em;
  margin-bottom: var(--space-md);
  letter-spacing: 0.03em;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  color: var(--color-white);
  line-height: 1.15;
  margin-bottom: var(--space-md);
  letter-spacing: -0.02em;
}

.hero-highlight {
  color: var(--color-accent);
  display: block;
  font-size: 0.78em;
  font-weight: 500;
  margin-top: 0.3em;
  letter-spacing: -0.01em;
}

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: rgba(255,255,255,0.72);
  line-height: 1.7;
  max-width: 600px;
  margin-bottom: var(--space-lg);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: var(--space-lg);
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 0.2em;
}

.stat-item strong {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
}

.stat-item span {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.02em;
}

/* ══════════════════════════════════════════════
   SERVICES SECTION
   ══════════════════════════════════════════════ */
.services-section {
  background: var(--color-surface);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-md);
}

.service-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  border: 1px solid var(--color-border);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.service-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(26,26,46,0.1);
}

.service-icon {
  width: 52px;
  height: 52px;
  color: var(--color-accent);
}

.service-card h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.4;
}

.service-card h3 span {
  display: block;
  font-size: 0.8125rem;
  font-weight: 400;
  color: var(--color-text-muted);
  margin-top: 0.15em;
}

.service-summary {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.75;
  flex: 1;
}

.service-features {
  display: flex;
  flex-direction: column;
  gap: 0.4em;
}

.service-features li {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  padding-left: 1.1em;
  position: relative;
}

.service-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
  font-size: 0.8em;
  top: 0.1em;
}

.service-link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-accent);
  margin-top: auto;
  transition: gap var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
}

.service-link:hover { color: var(--color-accent-dk); gap: 0.7em; }

/* ══════════════════════════════════════════════
   METHODOLOGY SECTION
   ══════════════════════════════════════════════ */
.methodology-section {
  background: var(--color-primary);
  color: var(--color-white);
}

.methodology-section .section-header h2 {
  color: var(--color-white);
}

.methodology-section .section-desc {
  color: rgba(255,255,255,0.65);
}

.methodology-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-md);
}

.method-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.method-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(200,169,110,0.08) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--transition);
}

.method-card:hover::before { opacity: 1; }

.method-card:hover {
  border-color: rgba(200,169,110,0.4);
  transform: translateY(-4px);
}

.method-number {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 800;
  color: rgba(200,169,110,0.2);
  line-height: 1;
  margin-bottom: var(--space-sm);
}

.method-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-white);
  line-height: 1.4;
  margin-bottom: var(--space-sm);
}

.method-card h3 span {
  display: block;
  font-size: 0.8125rem;
  font-weight: 400;
  color: var(--color-accent);
  margin-top: 0.1em;
}

.method-card > p {
  font-size: 0.9375rem;
  color: rgba(255,255,255,0.7);
  line-height: 1.75;
  margin-bottom: var(--space-sm);
}

.method-card ul {
  display: flex;
  flex-direction: column;
  gap: 0.4em;
}

.method-card li {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.55);
  padding-left: 1.1em;
  position: relative;
}

.method-card li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-size: 0.8em;
}

/* ══════════════════════════════════════════════
   ABOUT SECTION
   ══════════════════════════════════════════════ */
.about-section {
  background: var(--color-white);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: var(--space-2xl);
  align-items: center;
}

.about-visual {
  position: relative;
}

.about-visual-inner {
  background: var(--color-primary);
  border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  position: relative;
  overflow: hidden;
}

.about-visual-inner::after {
  content: '';
  position: absolute;
  bottom: -30px; right: -30px;
  width: 200px; height: 200px;
  background: radial-gradient(circle, rgba(200,169,110,0.2) 0%, transparent 70%);
  pointer-events: none;
}

.about-stat-block {
  border-left: 3px solid var(--color-accent);
  padding-left: var(--space-sm);
}

.about-stat-block strong {
  display: block;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 0.2em;
}

.about-stat-block span {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.6);
}

.about-content .section-tag {
  display: inline-block;
  margin-bottom: var(--space-xs);
}

.about-content h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.25rem);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.25;
  margin-bottom: var(--space-md);
}

.about-lead {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.about-content p {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: var(--space-sm);
}

.about-content em {
  font-style: normal;
  color: var(--color-accent-dk);
  font-weight: 500;
}

.about-values {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
  margin: var(--space-lg) 0;
  padding: var(--space-md) 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.value-item h4 {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.4;
  margin-bottom: 0.4em;
}

.value-item h4 span {
  display: block;
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--color-accent);
}

.value-item p {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin: 0;
}

/* ══════════════════════════════════════════════
   PORTFOLIO SECTION
   ══════════════════════════════════════════════ */
.portfolio-section {
  background: var(--color-surface);
}

.portfolio-intro {
  background: rgba(200,169,110,0.08);
  border-left: 4px solid var(--color-accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: var(--space-md) var(--space-lg);
  margin-top: var(--space-sm);
  text-align: left;
}

.portfolio-intro p {
  font-size: 0.9375rem;
  color: var(--color-text);
  line-height: 1.8;
}

.portfolio-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: var(--space-lg);
}

.tab-btn {
  padding: 0.6em 1.4em;
  font-size: 0.875rem;
  font-weight: 500;
  font-family: var(--font-body);
  border-radius: 100px;
  border: 1.5px solid var(--color-border);
  background: var(--color-white);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition);
}

.tab-btn.active,
.tab-btn:hover {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-md);
}

.portfolio-item {
  background: var(--color-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}

.portfolio-card-link {
  display: block;
  text-decoration: none;
  color: inherit;
}

.portfolio-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(26,26,46,0.12);
}

.portfolio-img-wrap {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--color-surface-2);
}

.portfolio-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.portfolio-item:hover .portfolio-img-wrap img {
  transform: scale(1.04);
}

.portfolio-overlay {
  position: absolute;
  inset: 0;
  background: rgba(26,26,46,0.65);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition);
}

.portfolio-item:hover .portfolio-overlay { opacity: 1; }

.portfolio-overlay span {
  color: var(--color-white);
  font-size: 0.9rem;
  font-weight: 600;
  border: 1.5px solid rgba(255,255,255,0.7);
  padding: 0.5em 1.2em;
  border-radius: 100px;
}

.portfolio-info {
  padding: var(--space-md);
}

.portfolio-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-accent-dk);
  background: rgba(200,169,110,0.1);
  padding: 0.25em 0.8em;
  border-radius: 100px;
  margin-bottom: 0.6em;
  letter-spacing: 0.03em;
}

.portfolio-info h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.4em;
  line-height: 1.35;
}

.portfolio-desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

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

.portfolio-cta .btn-outline {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.portfolio-cta .btn-outline:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

/* ══════════════════════════════════════════════
   FAQ SECTION
   ══════════════════════════════════════════════ */
.faq-section {
  background: var(--color-white);
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition);
}

.faq-item[open] {
  border-color: var(--color-accent);
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-primary);
  cursor: pointer;
  list-style: none;
  gap: var(--space-sm);
  transition: background var(--transition);
  user-select: none;
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::after {
  content: '+';
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--color-accent);
  flex-shrink: 0;
  transition: transform var(--transition);
  line-height: 1;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item summary:hover {
  background: var(--color-surface);
}

.faq-answer {
  padding: 0 var(--space-lg) var(--space-md);
}

.faq-answer p {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.8;
}

/* ══════════════════════════════════════════════
   CONTACT SECTION
   ══════════════════════════════════════════════ */
.contact-section {
  background: var(--color-primary);
  color: var(--color-white);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-2xl);
  align-items: start;
}

.contact-info .section-tag {
  background: rgba(200,169,110,0.15);
  color: var(--color-accent);
}

.contact-info h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.25rem);
  font-weight: 700;
  color: var(--color-white);
  line-height: 1.25;
  margin: var(--space-sm) 0 var(--space-md);
}

.contact-lead {
  font-size: 1rem;
  color: rgba(255,255,255,0.7);
  line-height: 1.75;
  margin-bottom: var(--space-lg);
}

.contact-details {
  font-style: normal;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.contact-item {
  display: flex;
  flex-direction: column;
  gap: 0.2em;
}

.contact-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.contact-item a,
.contact-item span {
  font-size: 1rem;
  color: rgba(255,255,255,0.85);
  transition: color var(--transition);
}

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

.contact-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.contact-tags span {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.5);
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.12);
  padding: 0.3em 0.9em;
  border-radius: 100px;
}

/* Contact Form */
.contact-form {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4em;
}

.form-group label {
  font-size: 0.875rem;
  font-weight: 500;
  color: rgba(255,255,255,0.75);
}

.form-group label span { color: var(--color-accent); }

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75em 1em;
  font-size: 0.9375rem;
  font-family: var(--font-body);
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-sm);
  color: var(--color-white);
  transition: border-color var(--transition), background var(--transition);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23c8a96e' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1em center;
  padding-right: 2.5em;
}

.form-group select option {
  background: var(--color-primary);
  color: var(--color-white);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(255,255,255,0.3);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--color-accent);
  background: rgba(255,255,255,0.1);
}

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

/* ══════════════════════════════════════════════
   FOOTER
   ══════════════════════════════════════════════ */
.site-footer {
  background: #0d0d1a;
  color: rgba(255,255,255,0.65);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: var(--space-xl);
  padding: var(--space-2xl) var(--space-md);
}

.footer-logo-text {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-white);
  line-height: 1.2;
  margin-bottom: 0.5rem;
}

.footer-logo-text span {
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--color-accent);
}

.footer-tagline {
  font-size: 0.875rem;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
  font-style: italic;
}

.footer-desc {
  font-size: 0.875rem;
  line-height: 1.7;
  color: rgba(255,255,255,0.45);
}

.footer-nav h3 {
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.9);
  margin-bottom: var(--space-sm);
}

.footer-nav ul {
  display: flex;
  flex-direction: column;
  gap: 0.5em;
}

.footer-nav a {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.5);
  transition: color var(--transition);
  line-height: 1.5;
}

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

.footer-keywords li { display: block; }

.footer-contact address {
  font-style: normal;
  display: flex;
  flex-direction: column;
  gap: 0.5em;
  margin-bottom: var(--space-sm);
}

.footer-contact address a {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.6);
  transition: color var(--transition);
}

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

.footer-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.footer-badges span {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.45);
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  padding: 0.25em 0.75em;
  border-radius: 100px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: var(--space-md) 0;
}

.footer-bottom .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.footer-bottom p {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.35);
}

.footer-related a {
  color: var(--color-accent);
  transition: color var(--transition);
}

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

/* ══════════════════════════════════════════════
   RESPONSIVE — Tablet
   ══════════════════════════════════════════════ */
@media (max-width: 900px) {
  .about-grid {
    grid-template-columns: 1fr;
  }

  .about-visual {
    order: -1;
  }

  .about-visual-inner {
    flex-direction: row;
    flex-wrap: wrap;
    padding: var(--space-lg);
  }

  .about-stat-block {
    flex: 1;
    min-width: 140px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
  }
}

/* ══════════════════════════════════════════════
   RESPONSIVE — Mobile
   ══════════════════════════════════════════════ */
@media (max-width: 640px) {
  :root {
    --space-xl: 3rem;
    --space-2xl: 4rem;
  }

  /* Mobile Nav */
  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    display: none;
    position: fixed;
    inset: 0;
    top: 0;
    background: rgba(13,13,26,0.98);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    z-index: 999;
    padding: 2rem;
  }

  .nav-menu.open {
    display: flex;
  }

  .nav-menu a {
    font-size: 1.125rem;
    color: var(--color-white);
  }

  .hero-stats {
    gap: var(--space-md);
  }

  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .methodology-grid {
    grid-template-columns: 1fr;
  }

  .about-values {
    grid-template-columns: 1fr;
  }

  .portfolio-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .footer-bottom .container {
    flex-direction: column;
    text-align: center;
  }

  .contact-tags span {
    font-size: 0.75rem;
  }
}

/* ══════════════════════════════════════════════
   PRINT STYLES
   ══════════════════════════════════════════════ */
@media print {
  .site-header,
  .nav-toggle,
  .hero-actions,
  .portfolio-tabs,
  .contact-form,
  .btn { display: none; }

  body { font-size: 12pt; color: #000; background: #fff; }
  .section { padding: 2rem 0; }
}