/* ==========================================================================
   TaxPenang.com - Main Stylesheet
   Mobile-First Responsive Design
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. CSS Custom Properties (Design Tokens)
   -------------------------------------------------------------------------- */
:root {
  /* Colors */
  --color-primary:       #1a3c6e;   /* Deep navy – trust, authority */
  --color-primary-dark:  #122a4f;
  --color-primary-light: #2a5298;
  --color-accent:        #e8a020;   /* Gold – premium, Malaysian warmth */
  --color-accent-dark:   #c4841a;
  --color-accent-light:  #f4c060;
  --color-success:       #2e7d32;
  --color-white:         #ffffff;
  --color-off-white:     #f8f9fc;
  --color-gray-50:       #f9fafb;
  --color-gray-100:      #f3f4f6;
  --color-gray-200:      #e5e7eb;
  --color-gray-300:      #d1d5db;
  --color-gray-400:      #9ca3af;
  --color-gray-500:      #6b7280;
  --color-gray-600:      #4b5563;
  --color-gray-700:      #374151;
  --color-gray-800:      #1f2937;
  --color-gray-900:      #111827;
  --color-text:          #1f2937;
  --color-text-muted:    #6b7280;

  /* Typography */
  --font-sans:   'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-serif:  'Playfair Display', Georgia, serif;
  --font-size-xs:   0.75rem;   /* 12px */
  --font-size-sm:   0.875rem;  /* 14px */
  --font-size-base: 1rem;      /* 16px */
  --font-size-lg:   1.125rem;  /* 18px */
  --font-size-xl:   1.25rem;   /* 20px */
  --font-size-2xl:  1.5rem;    /* 24px */
  --font-size-3xl:  1.875rem;  /* 30px */
  --font-size-4xl:  2.25rem;   /* 36px */
  --font-size-5xl:  3rem;      /* 48px */
  --font-size-6xl:  3.75rem;   /* 60px */

  /* 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;

  /* Layout */
  --max-width:        1200px;
  --max-width-narrow: 760px;
  --container-px:     1rem;

  /* Borders */
  --radius-sm:   0.25rem;
  --radius-md:   0.5rem;
  --radius-lg:   0.75rem;
  --radius-xl:   1rem;
  --radius-2xl:  1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md:  0 4px 12px rgba(0,0,0,0.10), 0 2px 6px rgba(0,0,0,0.06);
  --shadow-lg:  0 10px 30px rgba(0,0,0,0.12), 0 4px 12px rgba(0,0,0,0.08);
  --shadow-xl:  0 20px 50px rgba(0,0,0,0.15), 0 8px 20px rgba(0,0,0,0.08);

  /* Transitions */
  --transition-fast:   150ms ease;
  --transition-base:   250ms ease;
  --transition-slow:   400ms ease;

  /* Nav height */
  --nav-height: 70px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background-color: var(--color-white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, video, svg {
  display: block;
  max-width: 100%;
}

a {
  color: var(--color-primary-light);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

ul, ol { list-style: none; }

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  line-height: 1.2;
  color: var(--color-primary-dark);
}

/* --------------------------------------------------------------------------
   3. Utility Classes
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-px);
  padding-right: var(--container-px);
}

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

.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;
}

.text-center { text-align: center; }
.text-left   { text-align: left; }

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

.section-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: var(--space-4);
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-gray-500);
  max-width: 620px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: var(--font-size-sm);
  letter-spacing: 0.01em;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
  text-decoration: none;
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-primary-dark);
  border-color: var(--color-accent);
}

.btn--primary:hover {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(232, 160, 32, 0.35);
}

.btn--secondary {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255,255,255,0.6);
}

.btn--secondary:hover {
  background: rgba(255,255,255,0.12);
  border-color: var(--color-white);
  color: var(--color-white);
  transform: translateY(-2px);
}

.btn--outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn--outline:hover {
  background: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-2px);
}

.btn--whatsapp {
  background: #25d366;
  color: var(--color-white);
  border-color: #25d366;
}

.btn--whatsapp:hover {
  background: #1ebe5d;
  border-color: #1ebe5d;
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.35);
}

.btn--lg {
  padding: 1rem 2rem;
  font-size: var(--font-size-base);
}

/* --------------------------------------------------------------------------
   4. Navigation
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-white);
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
  height: var(--nav-height);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
}

.nav__logo {
  display: flex;
  flex-direction: column;
  line-height: 1;
  text-decoration: none;
  flex-shrink: 0;
}

.nav__logo-primary {
  font-family: var(--font-serif);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

.nav__logo-primary span {
  color: var(--color-accent);
}

.nav__logo-sub {
  font-size: var(--font-size-xs);
  color: var(--color-gray-500);
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-top: 2px;
}

.nav__menu {
  display: none;
  align-items: center;
  gap: var(--space-1);
}

.nav__link {
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-gray-700);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.nav__link:hover,
.nav__link.active {
  color: var(--color-primary);
  background: var(--color-gray-100);
}

.nav__link--cta {
  background: var(--color-primary);
  color: var(--color-white) !important;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  margin-left: var(--space-2);
}

.nav__link--cta:hover {
  background: var(--color-accent) !important;
  color: var(--color-primary-dark) !important;
}

.nav__toggle {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.nav__toggle span {
  display: block;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.nav__toggle.open span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.nav__toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav__toggle.open span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Mobile nav drawer */
.nav__mobile {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: var(--color-white);
  border-top: 1px solid var(--color-gray-200);
  box-shadow: var(--shadow-lg);
  padding: var(--space-4) var(--container-px) var(--space-6);
  z-index: 999;
  flex-direction: column;
  gap: var(--space-1);
}

.nav__mobile.open {
  display: flex;
}

.nav__mobile .nav__link {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  border-bottom: 1px solid var(--color-gray-100);
}

.nav__mobile .nav__link:last-child {
  border-bottom: none;
}

.nav__mobile .nav__link--cta {
  margin-top: var(--space-3);
  text-align: center;
  border-radius: var(--radius-full);
  border-bottom: none;
}

/* --------------------------------------------------------------------------
   5. Hero Section
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, var(--color-primary-light) 100%);
  color: var(--color-white);
  padding: var(--space-16) 0 var(--space-20);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}

.hero__inner {
  position: relative;
  display: grid;
  gap: var(--space-10);
  align-items: center;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: rgba(232, 160, 32, 0.15);
  border: 1px solid rgba(232, 160, 32, 0.4);
  border-radius: var(--radius-full);
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-accent-light);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}

.hero__badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.3); }
}

.hero__title {
  font-family: var(--font-serif);
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--color-white);
  line-height: 1.15;
  margin-bottom: var(--space-6);
}

.hero__title em {
  font-style: normal;
  color: var(--color-accent-light);
}

.hero__subtitle {
  font-size: var(--font-size-lg);
  color: rgba(255,255,255,0.82);
  margin-bottom: var(--space-8);
  max-width: 560px;
  line-height: 1.7;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-10);
}

.hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
  padding-top: var(--space-8);
  border-top: 1px solid rgba(255,255,255,0.15);
}

.hero__stat-value {
  font-family: var(--font-serif);
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--color-accent-light);
  line-height: 1;
  margin-bottom: var(--space-1);
}

.hero__stat-label {
  font-size: var(--font-size-xs);
  color: rgba(255,255,255,0.65);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* Hero visual card */
.hero__visual {
  display: none;
}

.hero-card {
  background: rgba(255,255,255,0.08);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-2xl);
  padding: var(--space-6);
  color: var(--color-white);
}

.hero-card__title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-accent-light);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}

.hero-card__item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  font-size: var(--font-size-sm);
}

.hero-card__item:last-child { border-bottom: none; }

.hero-card__icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   6. Trust Bar
   -------------------------------------------------------------------------- */
.trust-bar {
  background: var(--color-gray-50);
  border-bottom: 1px solid var(--color-gray-200);
  padding: var(--space-4) 0;
}

.trust-bar__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
}

.trust-bar__item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-gray-600);
}

.trust-bar__item svg,
.trust-bar__item .icon {
  color: var(--color-accent);
  font-size: var(--font-size-lg);
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   7. Section Layout
   -------------------------------------------------------------------------- */
.section {
  padding: var(--space-16) 0;
}

.section--alt {
  background: var(--color-gray-50);
}

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

.section__header {
  margin-bottom: var(--space-12);
}

/* --------------------------------------------------------------------------
   8. Services Grid
   -------------------------------------------------------------------------- */
.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.service-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

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

.service-card:hover::before {
  transform: scaleX(1);
}

.service-card__icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: var(--space-4);
  background: var(--color-off-white);
}

.service-card__title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: var(--space-3);
  font-family: var(--font-sans);
}

.service-card__desc {
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  margin-bottom: var(--space-4);
  line-height: 1.7;
}

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

.service-card__list li {
  font-size: var(--font-size-sm);
  color: var(--color-gray-700);
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
}

.service-card__list li::before {
  content: '✓';
  color: var(--color-success);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}

/* --------------------------------------------------------------------------
   9. Why Choose Us
   -------------------------------------------------------------------------- */
.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.feature-card {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
  padding: var(--space-5);
  border-radius: var(--radius-xl);
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  transition: all var(--transition-base);
}

.feature-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary-light);
}

.feature-card__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
  background: var(--color-primary);
  color: var(--color-white);
}

.feature-card__body {}

.feature-card__title {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: var(--space-2);
  font-family: var(--font-sans);
}

.feature-card__desc {
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  line-height: 1.7;
}

.feature-card__badge {
  display: inline-block;
  margin-top: var(--space-2);
  font-size: var(--font-size-xs);
  font-weight: 700;
  color: var(--color-accent-dark);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* --------------------------------------------------------------------------
   10. Process Steps
   -------------------------------------------------------------------------- */
.process-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  position: relative;
}

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

.process-step__number {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-white);
  font-weight: 700;
  font-size: var(--font-size-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  position: relative;
}

.process-step__number::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  height: var(--space-6);
  background: var(--color-gray-200);
}

.process-step:last-child .process-step__number::after {
  display: none;
}

.process-step__content {}

.process-step__title {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: var(--space-2);
  font-family: var(--font-sans);
}

.process-step__desc {
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   11. Testimonials
   -------------------------------------------------------------------------- */
.testimonials-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}

.testimonial-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  position: relative;
  transition: all var(--transition-base);
}

.testimonial-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary-light);
}

.testimonial-card__quote {
  font-size: 2.5rem;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: var(--space-3);
  font-family: Georgia, serif;
}

.testimonial-card__text {
  font-size: var(--font-size-sm);
  color: var(--color-gray-700);
  line-height: 1.8;
  margin-bottom: var(--space-4);
  font-style: italic;
}

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

.testimonial-card__avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-weight: 700;
  font-size: var(--font-size-sm);
  flex-shrink: 0;
}

.testimonial-card__name {
  font-weight: 600;
  font-size: var(--font-size-sm);
  color: var(--color-primary-dark);
}

.testimonial-card__stars {
  color: var(--color-accent);
  font-size: var(--font-size-xs);
  margin-top: 2px;
}

/* --------------------------------------------------------------------------
   12. Case Studies
   -------------------------------------------------------------------------- */
.case-studies-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.case-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-base);
}

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

.case-card__header {
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--color-gray-100);
}

.case-card__tag {
  display: inline-block;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: var(--font-size-xs);
  font-weight: 600;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}

.case-card__title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-primary-dark);
  font-family: var(--font-sans);
  line-height: 1.3;
}

.case-card__body {
  padding: var(--space-5) var(--space-6);
}

.case-card__desc {
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  line-height: 1.8;
  margin-bottom: var(--space-4);
}

.case-card__result {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  background: var(--color-gray-50);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  border-left: 3px solid var(--color-success);
}

.case-card__result-icon {
  font-size: 1.2rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.case-card__result-text {
  font-size: var(--font-size-sm);
  color: var(--color-gray-700);
  line-height: 1.6;
}

.case-card__result-text strong {
  color: var(--color-success);
}

/* --------------------------------------------------------------------------
   13. FAQ Accordion
   -------------------------------------------------------------------------- */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.faq-item.open {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-sm);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  cursor: pointer;
  background: var(--color-white);
  gap: var(--space-4);
  border: none;
  width: 100%;
  text-align: left;
  user-select: none;
  -webkit-user-select: none;
}

.faq-question:hover {
  background: var(--color-gray-50);
}

.faq-question__text {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-primary-dark);
  line-height: 1.4;
}

.faq-question__icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: var(--font-size-lg);
  color: var(--color-primary);
  transition: all var(--transition-base);
  font-weight: 300;
  line-height: 1;
}

.faq-item.open .faq-question__icon {
  background: var(--color-primary);
  color: var(--color-white);
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow);
}

.faq-answer__inner {
  padding: 0 var(--space-5) var(--space-5);
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  line-height: 1.8;
}

/* --------------------------------------------------------------------------
   14. Clients Logo Grid
   -------------------------------------------------------------------------- */
.clients-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

.client-item {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-gray-600);
  min-height: 60px;
  transition: all var(--transition-base);
}

.client-item:hover {
  border-color: var(--color-primary-light);
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

/* --------------------------------------------------------------------------
   15. CTA Section
   -------------------------------------------------------------------------- */
.cta-section {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary-light) 100%);
  padding: var(--space-16) 0;
  text-align: center;
  color: var(--color-white);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}

.cta-section__inner {
  position: relative;
}

.cta-section__title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: var(--space-4);
}

.cta-section__subtitle {
  font-size: var(--font-size-base);
  color: rgba(255,255,255,0.8);
  max-width: 520px;
  margin: 0 auto var(--space-8);
  line-height: 1.7;
}

.cta-section__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: center;
}

/* --------------------------------------------------------------------------
   16. Page Hero (inner pages)
   -------------------------------------------------------------------------- */
.page-hero {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  padding: var(--space-12) 0;
  color: var(--color-white);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}

.page-hero__inner { position: relative; }

.breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.65);
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}

.breadcrumb a {
  color: rgba(255,255,255,0.65);
  text-decoration: none;
}

.breadcrumb a:hover { color: var(--color-accent-light); }

.breadcrumb__sep { color: rgba(255,255,255,0.3); }

.breadcrumb__current { color: var(--color-accent-light); }

.page-hero__title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: var(--space-4);
}

.page-hero__subtitle {
  font-size: var(--font-size-base);
  color: rgba(255,255,255,0.8);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   17. Stats Row
   -------------------------------------------------------------------------- */
.stats-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

.stat-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-xl);
  padding: var(--space-5) var(--space-4);
  text-align: center;
  transition: all var(--transition-base);
}

.stat-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-md);
}

.stat-card__value {
  font-family: var(--font-serif);
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--space-2);
}

.stat-card__label {
  font-size: var(--font-size-xs);
  color: var(--color-gray-500);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* --------------------------------------------------------------------------
   18. Service Detail (services.html)
   -------------------------------------------------------------------------- */
.service-detail {
  padding: var(--space-10) 0;
}

.service-detail__header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.service-detail__icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  flex-shrink: 0;
}

.service-detail__title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: var(--space-2);
}

.service-detail__intro {
  font-size: var(--font-size-base);
  color: var(--color-gray-600);
  line-height: 1.8;
  max-width: 800px;
  margin-bottom: var(--space-6);
}

.service-includes {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

.service-includes li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--color-gray-50);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
  color: var(--color-gray-700);
  border-left: 3px solid var(--color-accent);
}

.service-includes li::before {
  content: '✓';
  color: var(--color-success);
  font-weight: 700;
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   19. About page
   -------------------------------------------------------------------------- */
.about-values {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}

.value-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  text-align: center;
  transition: all var(--transition-base);
}

.value-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary-light);
  transform: translateY(-3px);
}

.value-card__icon {
  font-size: 2rem;
  margin-bottom: var(--space-4);
}

.value-card__title {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: var(--space-3);
  font-family: var(--font-sans);
}

.value-card__desc {
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   20. Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background: var(--color-gray-900);
  color: rgba(255,255,255,0.7);
  padding: var(--space-12) 0 var(--space-6);
}

.footer__top {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-10);
}

.footer__brand {}

.footer__logo {
  font-family: var(--font-serif);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: var(--space-3);
  text-decoration: none;
  display: inline-block;
}

.footer__logo span { color: var(--color-accent); }

.footer__tagline {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.55);
  line-height: 1.7;
  margin-bottom: var(--space-5);
  max-width: 280px;
}

.footer__contact-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.6);
  margin-bottom: var(--space-3);
}

.footer__contact-item a {
  color: rgba(255,255,255,0.7);
}

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

.footer__col-title {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}

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

.footer__links a {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.6);
  transition: color var(--transition-fast);
}

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

.footer__bottom {
  padding-top: var(--space-6);
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  font-size: var(--font-size-xs);
  color: rgba(255,255,255,0.4);
}

.footer__bottom a {
  color: rgba(255,255,255,0.4);
}

.footer__bottom a:hover { color: var(--color-accent-light); }

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

/* --------------------------------------------------------------------------
   21. WhatsApp Float
   -------------------------------------------------------------------------- */
.whatsapp-float {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-4);
  z-index: 900;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  background: #25d366;
  color: var(--color-white);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 600;
  box-shadow: 0 4px 20px rgba(37,211,102,0.4);
  text-decoration: none;
  transition: all var(--transition-base);
  animation: float 3s ease-in-out infinite;
}

.whatsapp-float:hover {
  background: #1ebe5d;
  color: var(--color-white);
  transform: scale(1.04);
  box-shadow: 0 6px 28px rgba(37,211,102,0.5);
}

.whatsapp-float__icon {
  font-size: 1.3rem;
  flex-shrink: 0;
}

.whatsapp-float__label {
  display: none;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}

/* --------------------------------------------------------------------------
   22. Animations & Helpers
   -------------------------------------------------------------------------- */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.divider {
  width: 60px;
  height: 3px;
  background: var(--color-accent);
  border-radius: 2px;
  margin: var(--space-4) auto;
}

.divider--left { margin-left: 0; }

.tag {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: 600;
  padding: 0.2em 0.7em;
  border-radius: var(--radius-full);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.tag--blue { background: #dbeafe; color: #1d4ed8; }
.tag--green { background: #d1fae5; color: #065f46; }
.tag--amber { background: #fef3c7; color: #92400e; }
.tag--purple { background: #ede9fe; color: #5b21b6; }
.tag--red { background: #fee2e2; color: #991b1b; }
.tag--teal { background: #ccfbf1; color: #134e4a; }

/* Alert/notice box */
.notice {
  background: var(--color-gray-50);
  border: 1px solid var(--color-gray-200);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-5);
  font-size: var(--font-size-sm);
  color: var(--color-gray-700);
  line-height: 1.7;
}

.notice a { color: var(--color-primary-light); font-weight: 500; }
.notice a:hover { color: var(--color-accent); }

/* --------------------------------------------------------------------------
   23. Responsive Breakpoints — Tablet (768px+)
   -------------------------------------------------------------------------- */
@media (min-width: 768px) {
  :root {
    --container-px: 2rem;
  }

  .section-title { font-size: var(--font-size-3xl); }
  .section-subtitle { font-size: var(--font-size-lg); }

  /* Nav */
  .nav__toggle { display: none; }
  .nav__menu { display: flex; }

  /* Hero */
  .hero__inner {
    grid-template-columns: 1fr 1fr;
  }
  .hero__title { font-size: var(--font-size-4xl); }
  .hero__visual { display: block; }

  /* Grids */
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonials-grid { grid-template-columns: repeat(2, 1fr); }
  .case-studies-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .about-values { grid-template-columns: repeat(2, 1fr); }
  .stats-row { grid-template-columns: repeat(4, 1fr); }
  .clients-grid { grid-template-columns: repeat(3, 1fr); }
  .footer__top { grid-template-columns: 2fr 1fr 1fr 1fr; }
  .footer__bottom { flex-direction: row; justify-content: space-between; align-items: center; }

  /* CTA */
  .cta-section__title { font-size: var(--font-size-3xl); }

  /* Page hero */
  .page-hero__title { font-size: var(--font-size-4xl); }

  /* WhatsApp */
  .whatsapp-float__label { display: block; }

  /* Process */
  .process-step__number::after {
    top: 50%;
    left: 100%;
    transform: translateY(-50%) translateX(0);
    width: var(--space-6);
    height: 2px;
  }
}

/* --------------------------------------------------------------------------
   24. Responsive Breakpoints — Desktop (1024px+)
   -------------------------------------------------------------------------- */
@media (min-width: 1024px) {
  :root {
    --container-px: 2.5rem;
  }

  .services-grid { grid-template-columns: repeat(3, 1fr); }
  .features-grid { grid-template-columns: repeat(4, 1fr); }
  .testimonials-grid { grid-template-columns: repeat(3, 1fr); }
  .case-studies-grid { grid-template-columns: repeat(2, 1fr); }
  .about-values { grid-template-columns: repeat(4, 1fr); }
  .clients-grid { grid-template-columns: repeat(4, 1fr); }
  .hero__title { font-size: var(--font-size-5xl); }
}

@media (min-width: 1280px) {
  .case-studies-grid { grid-template-columns: repeat(3, 1fr); }
}

/* --------------------------------------------------------------------------
   25. Print styles
   -------------------------------------------------------------------------- */
@media print {
  .site-header, .whatsapp-float, .cta-section, .site-footer { display: none; }
  body { color: #000; }
  a { color: #000; text-decoration: underline; }
}