/* ========================================
   TELCOMET - B2B VoIP Solutions
   Main Stylesheet
   ======================================== */

/* ----------------------------------------
   CSS Custom Properties (Variables)
   ---------------------------------------- */
:root {
  /* Colors */
  --color-primary: #1a365d;
  --color-primary-light: #2d4a7c;
  --color-primary-dark: #0f2744;
  --color-secondary: #2563eb;
  --color-secondary-light: #3b82f6;
  --color-accent: #10b981;
  --color-accent-hover: #059669;
  --color-bg: #f8fafc;
  --color-bg-alt: #f1f5f9;
  --color-text: #1e293b;
  --color-text-light: #64748b;
  --color-text-muted: #94a3b8;
  --color-white: #ffffff;
  --color-border: #e2e8f0;
  --color-error: #ef4444;
  --color-success: #22c55e;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-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-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;

  /* Spacing */
  --spacing-1: 0.25rem;   /* 4px */
  --spacing-2: 0.5rem;    /* 8px */
  --spacing-3: 0.75rem;   /* 12px */
  --spacing-4: 1rem;      /* 16px */
  --spacing-5: 1.25rem;   /* 20px */
  --spacing-6: 1.5rem;    /* 24px */
  --spacing-8: 2rem;      /* 32px */
  --spacing-10: 2.5rem;   /* 40px */
  --spacing-12: 3rem;     /* 48px */
  --spacing-16: 4rem;     /* 64px */
  --spacing-20: 5rem;     /* 80px */
  --spacing-24: 6rem;     /* 96px */

  /* Layout */
  --container-max: 1280px;
  --container-padding: var(--spacing-4);
  --header-height: 72px;

  /* Borders & Radius */
  --radius-sm: 0.25rem;   /* 4px */
  --radius-md: 0.5rem;    /* 8px */
  --radius-lg: 0.75rem;   /* 12px */
  --radius-xl: 1rem;      /* 16px */
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 300ms ease;
  --transition-slow: 500ms ease;

  /* Z-index */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal: 400;
  --z-overlay: 500;
}

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

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

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

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  background: none;
  border: none;
}

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

ul,
ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  color: var(--color-primary);
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
  margin-bottom: var(--spacing-4);
}

p:last-child {
  margin-bottom: 0;
}

/* ----------------------------------------
   Utility Classes
   ---------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.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; }
.text-right { text-align: right; }

.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-secondary); }
.text-accent { color: var(--color-accent); }
.text-muted { color: var(--color-text-muted); }

.bg-primary { background-color: var(--color-primary); }
.bg-secondary { background-color: var(--color-secondary); }
.bg-accent { background-color: var(--color-accent); }
.bg-light { background-color: var(--color-bg); }
.bg-white { background-color: var(--color-white); }

/* ----------------------------------------
   Buttons
   ---------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  padding: var(--spacing-3) var(--spacing-6);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  line-height: 1;
  text-align: center;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

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

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

.btn-secondary {
  background-color: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

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

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

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

.btn-outline-white {
  background-color: transparent;
  color: var(--color-white);
  border: 2px solid var(--color-white);
}

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

.btn-lg {
  padding: var(--spacing-4) var(--spacing-8);
  font-size: var(--font-size-lg);
}

.btn-sm {
  padding: var(--spacing-2) var(--spacing-4);
  font-size: var(--font-size-sm);
}

/* ----------------------------------------
   Header & Navigation
   ---------------------------------------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  z-index: var(--z-fixed);
  transition: box-shadow var(--transition-normal);
}

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

.header__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
}

.header__logo img,
.header__logo svg {
  height: 40px;
  width: auto;
}

.header__logo-text {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

.header__nav {
  display: none;
}

.header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--spacing-8);
}

.header__nav-item {
  position: relative;
}

.header__nav-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-1);
  padding: var(--spacing-2) 0;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  transition: color var(--transition-fast);
}

.header__nav-link:hover,
.header__nav-link.active {
  color: var(--color-secondary);
}

.header__nav-link svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-fast);
}

.header__nav-item:hover .header__nav-link svg {
  transform: rotate(180deg);
}

/* Dropdown */
.header__dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  min-width: 220px;
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: var(--spacing-2);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
  z-index: var(--z-dropdown);
}

.header__nav-item:hover .header__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.header__dropdown-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  padding: var(--spacing-3) var(--spacing-4);
  font-size: var(--font-size-sm);
  color: var(--color-text);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.header__dropdown-link:hover {
  background-color: var(--color-bg);
  color: var(--color-secondary);
}

.header__dropdown-link svg {
  width: 20px;
  height: 20px;
  color: var(--color-secondary);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
}

.header__cta {
  display: none;
}

/* Mobile Menu Button */
.header__menu-btn {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 28px;
  height: 28px;
  padding: 0;
}

.header__menu-btn span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-primary);
  transition: all var(--transition-fast);
}

.header__menu-btn.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.header__menu-btn.active span:nth-child(2) {
  opacity: 0;
}

.header__menu-btn.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Navigation */
.mobile-nav {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--color-white);
  padding: var(--spacing-6);
  transform: translateX(100%);
  transition: transform var(--transition-normal);
  z-index: var(--z-fixed);
  overflow-y: auto;
}

.mobile-nav.active {
  transform: translateX(0);
}

.mobile-nav__list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
}

.mobile-nav__item {
  border-bottom: 1px solid var(--color-border);
}

.mobile-nav__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-4) 0;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
}

.mobile-nav__link svg {
  width: 20px;
  height: 20px;
  transition: transform var(--transition-fast);
}

.mobile-nav__link.active svg {
  transform: rotate(180deg);
}

.mobile-nav__submenu {
  display: none;
  padding-bottom: var(--spacing-4);
}

.mobile-nav__submenu.active {
  display: block;
}

.mobile-nav__submenu-link {
  display: block;
  padding: var(--spacing-3) var(--spacing-4);
  font-size: var(--font-size-base);
  color: var(--color-text-light);
  transition: color var(--transition-fast);
}

.mobile-nav__submenu-link:hover {
  color: var(--color-secondary);
}

.mobile-nav__cta {
  margin-top: var(--spacing-6);
}

.mobile-nav__cta .btn {
  width: 100%;
}

/* ----------------------------------------
   Hero Section
   ---------------------------------------- */
.hero {
  position: relative;
  padding: calc(var(--header-height) + var(--spacing-16)) 0 var(--spacing-20);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle at 20% 80%, rgba(37, 99, 235, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(16, 185, 129, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

/* Grid pattern overlay */
.hero::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.hero__title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  margin-bottom: var(--spacing-6);
}

.hero__subtitle {
  font-size: var(--font-size-lg);
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: var(--spacing-8);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero__actions {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
  justify-content: center;
}

/* Page Hero (for inner pages) */
.page-hero {
  padding: calc(var(--header-height) + var(--spacing-12)) 0 var(--spacing-12);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  text-align: center;
}

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

.page-hero__subtitle {
  font-size: var(--font-size-lg);
  color: rgba(255, 255, 255, 0.85);
  max-width: 600px;
  margin: 0 auto;
}

/* ----------------------------------------
   Sections
   ---------------------------------------- */
.section {
  padding: var(--spacing-16) 0;
}

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

.section__header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--spacing-12);
}

.section__title {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-4);
}

.section__subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-light);
}

/* ----------------------------------------
   Service Cards
   ---------------------------------------- */
.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-6);
}

.service-card {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-6);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: all var(--transition-normal);
}

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

.service-card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-bg);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-4);
  color: var(--color-secondary);
}

.service-card__icon svg {
  width: 24px;
  height: 24px;
}

.service-card__title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-3);
}

.service-card__description {
  font-size: var(--font-size-base);
  color: var(--color-text-light);
  margin-bottom: var(--spacing-4);
}

.service-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-secondary);
  transition: gap var(--transition-fast);
}

.service-card__link:hover {
  gap: var(--spacing-3);
}

.service-card__link svg {
  width: 16px;
  height: 16px;
}

/* ----------------------------------------
   Features
   ---------------------------------------- */
.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-8);
}

.feature-item {
  display: flex;
  gap: var(--spacing-4);
}

.feature-item__icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-accent);
  border-radius: var(--radius-full);
  color: var(--color-white);
}

.feature-item__icon svg {
  width: 24px;
  height: 24px;
}

.feature-item__content {
  flex: 1;
}

.feature-item__title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-2);
}

.feature-item__description {
  font-size: var(--font-size-base);
  color: var(--color-text-light);
}

/* ----------------------------------------
   How It Works (Steps)
   ---------------------------------------- */
.steps {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-8);
}

.step {
  display: flex;
  gap: var(--spacing-6);
  align-items: flex-start;
}

.step__number {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-secondary);
  color: var(--color-white);
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  border-radius: var(--radius-full);
}

.step__content {
  flex: 1;
}

.step__title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-2);
}

.step__description {
  font-size: var(--font-size-base);
  color: var(--color-text-light);
}

/* ----------------------------------------
   CTA Section
   ---------------------------------------- */
.cta-section {
  padding: var(--spacing-16) 0;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  text-align: center;
}

.cta-section__title {
  font-size: var(--font-size-3xl);
  color: var(--color-white);
  margin-bottom: var(--spacing-4);
}

.cta-section__subtitle {
  font-size: var(--font-size-lg);
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: var(--spacing-8);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-section__actions {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
  justify-content: center;
  align-items: center;
}

/* ----------------------------------------
   Diagram / Flow
   ---------------------------------------- */
.diagram {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-8);
  border: 1px solid var(--color-border);
  margin: var(--spacing-8) 0;
}

.diagram__title {
  font-size: var(--font-size-lg);
  text-align: center;
  margin-bottom: var(--spacing-6);
}

.diagram__flow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-4);
}

.diagram__node {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-4) var(--spacing-6);
  background-color: var(--color-bg);
  border-radius: var(--radius-md);
  border: 2px solid var(--color-border);
  min-width: 160px;
  text-align: center;
}

.diagram__node--primary {
  background-color: var(--color-secondary);
  border-color: var(--color-secondary);
  color: var(--color-white);
}

.diagram__node-icon {
  width: 32px;
  height: 32px;
  margin-bottom: var(--spacing-2);
}

.diagram__node-label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

.diagram__arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-secondary);
}

.diagram__arrow svg {
  width: 24px;
  height: 24px;
  transform: rotate(90deg);
}

/* ----------------------------------------
   Benefits List
   ---------------------------------------- */
.benefits-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
}

.benefits-list__item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-3);
}

.benefits-list__icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  color: var(--color-accent);
  margin-top: 2px;
}

.benefits-list__text {
  font-size: var(--font-size-base);
  color: var(--color-text);
}

/* ----------------------------------------
   Table
   ---------------------------------------- */
.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

.table th,
.table td {
  padding: var(--spacing-4);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.table th {
  background-color: var(--color-bg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
}

.table tbody tr:hover {
  background-color: var(--color-bg);
}

.table tbody tr:last-child td {
  border-bottom: none;
}

/* ----------------------------------------
   Contact Form
   ---------------------------------------- */
.contact-form {
  max-width: 600px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: var(--spacing-5);
}

.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  margin-bottom: var(--spacing-2);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--spacing-3) var(--spacing-4);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-secondary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-muted);
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

.form-submit {
  width: 100%;
}

/* Contact Info */
.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-6);
}

.contact-info__item {
  display: flex;
  gap: var(--spacing-4);
}

.contact-info__icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-bg);
  border-radius: var(--radius-md);
  color: var(--color-secondary);
}

.contact-info__icon svg {
  width: 24px;
  height: 24px;
}

.contact-info__content {
  flex: 1;
}

.contact-info__title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-1);
}

.contact-info__text {
  font-size: var(--font-size-base);
  color: var(--color-text-light);
}

.contact-info__text a {
  color: var(--color-secondary);
  transition: color var(--transition-fast);
}

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

/* ----------------------------------------
   About Page
   ---------------------------------------- */
.about-content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-8);
}

.about-section {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-8);
  border: 1px solid var(--color-border);
}

.about-section__title {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-4);
}

.about-section__text {
  font-size: var(--font-size-base);
  color: var(--color-text-light);
  line-height: var(--line-height-relaxed);
}

/* Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-6);
}

.stat-item {
  text-align: center;
  padding: var(--spacing-6);
  background-color: var(--color-bg);
  border-radius: var(--radius-lg);
}

.stat-item__number {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-secondary);
  margin-bottom: var(--spacing-2);
}

.stat-item__label {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

/* ----------------------------------------
   Footer
   ---------------------------------------- */
.footer {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-16) 0 var(--spacing-8);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-8);
  margin-bottom: var(--spacing-12);
}

.footer__brand {
  max-width: 300px;
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  margin-bottom: var(--spacing-4);
}

.footer__logo img,
.footer__logo svg {
  height: 32px;
  width: auto;
}

.footer__logo-text {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
}

.footer__description {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.7);
  line-height: var(--line-height-relaxed);
}

.footer__column-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
  margin-bottom: var(--spacing-4);
}

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

.footer__link {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--color-white);
}

.footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-3);
  margin-bottom: var(--spacing-3);
}

.footer__contact-item svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--color-accent);
  margin-top: 2px;
}

.footer__contact-text {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.7);
}

.footer__contact-text a {
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition-fast);
}

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

.footer__bottom {
  padding-top: var(--spacing-8);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
  align-items: center;
  text-align: center;
}

.footer__copyright {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.5);
}

/* ----------------------------------------
   Responsive Styles
   ---------------------------------------- */

/* Tablet (768px) */
@media (min-width: 768px) {
  :root {
    --container-padding: var(--spacing-6);
  }

  h1 { font-size: var(--font-size-5xl); }
  h2 { font-size: var(--font-size-4xl); }

  .hero {
    padding: calc(var(--header-height) + var(--spacing-20)) 0 var(--spacing-24);
  }

  .hero__title {
    font-size: var(--font-size-5xl);
  }

  .hero__actions {
    flex-direction: row;
  }

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

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .steps {
    flex-direction: row;
    justify-content: center;
  }

  .step {
    flex-direction: column;
    align-items: center;
    text-align: center;
    max-width: 250px;
  }

  .cta-section__actions {
    flex-direction: row;
  }

  .diagram__flow {
    flex-direction: row;
  }

  .diagram__arrow svg {
    transform: rotate(0);
  }

  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .footer__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer__bottom {
    flex-direction: row;
    justify-content: space-between;
  }
}

/* Desktop (1024px) */
@media (min-width: 1024px) {
  :root {
    --container-padding: var(--spacing-8);
  }

  .header__nav {
    display: block;
  }

  .header__cta {
    display: inline-flex;
  }

  .header__menu-btn {
    display: none;
  }

  .services-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .footer__grid {
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
  }

  .contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-12);
  }
}

/* Large Desktop (1280px) */
@media (min-width: 1280px) {
  .services-grid--5 {
    grid-template-columns: repeat(5, 1fr);
  }
}

/* ----------------------------------------
   Legal Pages (Terms, Privacy)
   ---------------------------------------- */
.legal-content {
  max-width: 800px;
  margin: 0 auto;
}

.legal-content__updated {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  font-style: italic;
  margin-bottom: var(--spacing-8);
  padding-bottom: var(--spacing-4);
  border-bottom: 1px solid var(--color-border);
}

.legal-section {
  margin-bottom: var(--spacing-8);
  padding-bottom: var(--spacing-8);
  border-bottom: 1px solid var(--color-border);
}

.legal-section:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.legal-section__title {
  font-size: var(--font-size-xl);
  color: var(--color-primary);
  margin-bottom: var(--spacing-4);
}

.legal-section__subtitle {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  margin-top: var(--spacing-6);
  margin-bottom: var(--spacing-3);
}

.legal-section__text {
  font-size: var(--font-size-base);
  color: var(--color-text-light);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-4);
}

.legal-section__text:last-child {
  margin-bottom: 0;
}

.legal-section__text a {
  color: var(--color-secondary);
  text-decoration: underline;
  transition: color var(--transition-fast);
}

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

.legal-list {
  margin: var(--spacing-4) 0;
  padding-left: var(--spacing-6);
  list-style-type: disc;
}

.legal-list li {
  font-size: var(--font-size-base);
  color: var(--color-text-light);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-2);
}

.legal-list li:last-child {
  margin-bottom: 0;
}

/* Nested lists */
.legal-list .legal-list {
  margin-top: var(--spacing-2);
  margin-bottom: var(--spacing-2);
  list-style-type: circle;
}

/* Ordered lists for numbered sections */
ol.legal-list {
  list-style-type: decimal;
}

/* ----------------------------------------
   Print Styles
   ---------------------------------------- */
@media print {
  .header,
  .footer,
  .mobile-nav {
    display: none;
  }

  .hero {
    padding-top: var(--spacing-8);
    background: none;
    color: var(--color-text);
  }

  .hero__title,
  .hero__subtitle {
    color: var(--color-text);
  }

  .section {
    padding: var(--spacing-8) 0;
  }
}