/* ============================================
   HACK THE SYSTEM - Responsive CSS
   Media Queries for Mobile-First Design
   ============================================ */

/* ============================================
   TABLET (640px and up)
   ============================================ */

@media (min-width: 640px) {
  
  .hero__title {
    font-size: var(--font-size-5xl);
  }
  
  .hero__subtitle {
    font-size: var(--font-size-xl);
  }
  
  .grid--2 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .nav__dropdown {
    min-width: 250px;
  }
  
}

/* ============================================
   TABLET (768px and up)
   ============================================ */

@media (min-width: 768px) {
  
  /* Navigation */
  .nav__menu {
    display: flex;
  }
  
  .nav__toggle {
    display: none;
  }
  
  /* Hero */
  .hero {
    padding: 140px 0 100px;
  }
  
  .hero__title {
    font-size: var(--font-size-5xl);
  }
  
  .hero__content {
    max-width: 700px;
  }
  
  /* Grid */
  .grid--2 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .grid--3 {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .grid--4 {
    grid-template-columns: repeat(4, 1fr);
  }
  
  /* Cards */
  .card {
    padding: var(--spacing-2xl);
  }
  
  /* Metrics */
  .metric__value {
    font-size: var(--font-size-5xl);
  }
  
  /* Footer */
  .footer__container {
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-3xl);
  }
  
  /* Forms */
  .form {
    max-width: 600px;
  }
  
}

/* ============================================
   DESKTOP (1024px and up)
   ============================================ */

@media (min-width: 1024px) {
  
  /* Hero */
  .hero {
    padding: 160px 0 120px;
  }
  
  .hero__title {
    font-size: var(--font-size-5xl);
  }
  
  .hero__content {
    max-width: 800px;
  }
  
  /* Container */
  .container {
    max-width: 1200px;
  }
  
  .container--wide {
    max-width: 1400px;
  }
  
  /* Grid */
  .grid--auto-fit {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  }
  
  /* Partners */
  .partners__grid {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  }
  
  /* Timeline */
  .timeline::before {
    left: 50%;
    transform: translateX(-50%);
  }
  
  .timeline__item {
    width: 50%;
    padding: 0 var(--spacing-2xl);
  }
  
  .timeline__item--left {
    left: 0;
    text-align: right;
  }
  
  .timeline__item--right {
    left: 50%;
    text-align: left;
  }
  
  .timeline__marker {
    position: absolute;
    top: 0;
    width: 20px;
    height: 20px;
  }
  
  .timeline__item--left .timeline__marker {
    right: -10px;
  }
  
  .timeline__item--right .timeline__marker {
    left: -10px;
  }
  
}

/* ============================================
   LARGE DESKTOP (1280px and up)
   ============================================ */

@media (min-width: 1280px) {
  
  /* Hero */
  .hero__title {
    font-size: var(--font-size-5xl);
  }
  
  /* Typography */
  h1 {
    font-size: var(--font-size-5xl);
  }
  
  h2 {
    font-size: var(--font-size-4xl);
  }
  
}

/* ============================================
   MOBILE (max-width: 767px)
   ============================================ */

@media (max-width: 767px) {
  
  /* Navigation */
  .nav__container {
    padding: var(--spacing-sm) var(--spacing-md);
  }
  
  .nav__toggle {
    display: flex;
  }
  
  .nav__menu {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: var(--color-primary);
    padding: var(--spacing-md);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
  }
  
  .nav__menu--active {
    max-height: calc(100vh - 60px);
    overflow-y: auto;
  }
  
  .nav__item {
    width: 100%;
  }
  
  .nav__link {
    display: block;
    width: 100%;
    padding: var(--spacing-md);
    border-radius: 0;
  }
  
  .nav__dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    background: rgba(0, 0, 0, 0.2);
    max-height: 0;
    overflow: hidden;
  }
  
  .nav__dropdown-item {
    padding-left: var(--spacing-2xl);
  }
  
  .nav__cta {
    width: 100%;
    margin-top: var(--spacing-md);
    text-align: center;
  }
  
  /* Hero */
  .hero {
    padding: 100px 0 60px;
  }
  
  .hero__title {
    font-size: var(--font-size-3xl);
  }
  
  .hero__subtitle {
    font-size: var(--font-size-lg);
  }
  
  .hero__actions {
    flex-direction: column;
    width: 100%;
  }
  
  .hero__actions .btn {
    width: 100%;
    justify-content: center;
  }
  
  .hero__metrics {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
  }
  
  /* Grid */
  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }
  
  .grid--auto-fit {
    grid-template-columns: 1fr;
  }
  
  /* Cards */
  .card {
    padding: var(--spacing-lg);
  }
  
  /* Partners */
  .partners__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
  }
  
  .partner {
    min-height: 80px;
    padding: var(--spacing-sm);
  }
  
  .partner__logo {
    max-width: 120px;
    max-height: 50px;
  }
  
  /* Metrics */
  .metric__value {
    font-size: var(--font-size-3xl);
  }
  
  .metric__label {
    font-size: var(--font-size-xs);
  }
  
  /* Timeline */
  .timeline {
    padding: var(--spacing-lg) 0;
  }
  
  .timeline::before {
    left: 20px;
    transform: none;
  }
  
  .timeline__item {
    width: 100%;
    padding-left: 50px;
    text-align: left;
  }
  
  .timeline__item--left,
  .timeline__item--right {
    left: 0;
    text-align: left;
  }
  
  .timeline__marker {
    left: 10px !important;
  }
  
  .timeline__content {
    padding: var(--spacing-lg);
  }
  
  /* Tabs */
  .tabs__list {
    padding: var(--spacing-xs);
  }
  
  .tabs__button {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-sm);
  }
  
  /* Forms */
  .form {
    max-width: 100%;
  }
  
  /* Footer */
  .footer {
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
  }
  
  .footer__container {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }
  
  .footer__brand {
    max-width: 100%;
  }
  
  .footer__bottom {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }
  
  /* Sections */
  .section {
    padding: var(--spacing-3xl) 0;
  }
  
  /* Container */
  .container {
    padding: 0 var(--spacing-md);
  }
  
}

/* ============================================
   SMALL MOBILE (max-width: 375px)
   ============================================ */

@media (max-width: 375px) {
  
  /* Hero */
  .hero__title {
    font-size: var(--font-size-2xl);
  }
  
  .hero__subtitle {
    font-size: var(--font-size-base);
  }
  
  /* Metrics */
  .hero__metrics {
    grid-template-columns: 1fr;
  }
  
  /* Partners */
  .partners__grid {
    grid-template-columns: 1fr;
  }
  
  /* Buttons */
  .btn {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
  }
  
  /* Cards */
  .card {
    padding: var(--spacing-md);
  }
  
  /* Footer */
  .footer__social {
    flex-wrap: wrap;
  }
  
}

/* ============================================
   LANDSCAPE MOBILE (max-height: 500px)
   ============================================ */

@media (max-height: 500px) and (orientation: landscape) {
  
  .hero {
    padding: 60px 0 40px;
  }
  
  .hero__title {
    font-size: var(--font-size-3xl);
  }
  
  .hero__subtitle {
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-lg);
  }
  
  .hero__actions {
    flex-direction: row;
    margin-bottom: var(--spacing-lg);
  }
  
  .hero__metrics {
    margin-top: var(--spacing-lg);
  }
  
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
  
  .nav,
  .hero,
  .footer,
  .btn,
  .accordion__header {
    display: none;
  }
  
  body {
    background: white;
    color: black;
  }
  
  .card,
  .accordion__content {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid #ccc;
  }
  
}

/* ============================================
   REDUCED MOTION
   ============================================ */

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

/* ============================================
   HIGH CONTRAST MODE
   ============================================ */

@media (prefers-contrast: high) {
  
  :root {
    --color-primary: #000000;
    --color-secondary: #0000ff;
    --color-accent: #8b5cf6;
    --color-bg: #ffffff;
    --color-text: #000000;
    --color-text-light: #333333;
  }
  
  .card,
  .feature,
  .timeline__content {
    border: 2px solid var(--color-text);
  }
  
}

/* ============================================
   FOCUS VISIBLE (for keyboard navigation)
   ============================================ */

@media (hover: none) {
  
  .card:hover,
  .partner:hover {
    transform: none;
    box-shadow: var(--shadow-sm);
  }
  
  .btn:hover {
    transform: none;
  }
  
}

/* ============================================
   ACCESSIBILITY - TOUCH TARGETS
   ============================================ */

@media (hover: none) and (pointer: coarse) {
  
  .btn,
  .nav__link,
  .tabs__button,
  .accordion__header,
  .footer__social-link {
    min-height: 44px;
    min-width: 44px;
  }
  
}