/* =============================================
   RESPONSIVE — COMPREHENSIVE MOBILE-FIRST
   Breakpoints: 1200px, 968px, 768px, 640px, 480px
   ============================================= */

/* =============================================
   LARGE DESKTOPS (1200px and below)
   ============================================= */
@media (max-width: 1200px) {
  .hero-layout {
    grid-template-columns: 1fr 380px;
    gap: 48px;
  }
  .hero-card {
    padding: 36px 28px;
  }
}

/* =============================================
   TABLETS / SMALL LAPTOPS (1100px and below)
   ============================================= */
@media (max-width: 1100px) {
  .hero-layout {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .hero-card {
    display: none;
  }
  .focus-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

/* =============================================
   TABLETS (968px and below)
   ============================================= */
@media (max-width: 968px) {
  /* Layout */
  .container {
    padding: 0 24px;
  }

  /* Navigation */
  .nav {
    padding: 0 24px;
  }
  .nav-links {
    gap: 24px;
  }
  .nav-dropdown-menu {
    left: 0;
    transform: translateX(0) translateY(8px);
  }
  .nav-dropdown:hover .nav-dropdown-menu {
    transform: translateX(0) translateY(0);
  }

  /* Hero */
  .hero-title {
    font-size: clamp(32px, 4vw, 48px);
  }
  .hero-subtitle {
    font-size: 16px;
  }
  .hero-proof {
    gap: 20px;
    padding: 14px 24px;
  }

  /* Grids */
  .stakes-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .output-grid {
    grid-template-columns: 1fr;
    gap: 56px;
  }
  .endorsements-grid {
    grid-template-columns: 1fr;
  }
  .focus-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }

  /* Forms */
  .form-row {
    grid-template-columns: 1fr;
  }

  /* Protocol Timeline */
  .protocol-timeline {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 12px;
  }
  .protocol-step {
    min-width: 120px;
  }

  /* System Flow */
  .system-flow {
    max-width: 100%;
  }
  .system-node {
    padding: 24px 28px;
  }

  /* Proof Bar */
  .proof-bar {
    gap: 40px;
    padding: 40px 32px;
  }

  /* Comparison Table */
  .comparison-table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  .comparison-table {
    min-width: 600px;
  }

  /* Output Preview */
  .output-preview {
    padding: 36px;
  }
}

/* =============================================
   TABLETS PORTRAIT (768px and below)
   ============================================= */
@media (max-width: 768px) {
  /* Typography scaling */
  .hero-title {
    font-size: clamp(28px, 5vw, 40px);
  }
  .stakes-title,
  .about-title,
  .comparison-title,
  .output-title,
  .system-title,
  .endorsements-title,
  .focus-title,
  .register-title {
    font-size: clamp(28px, 5vw, 40px);
  }

  /* Section padding */
  .stakes,
  .about,
  .comparison,
  .output,
  .system,
  .endorsements,
  .register,
  .focus {
    padding: 100px 0;
  }

  /* Stats */
  .stat-card {
    padding: 32px 24px;
  }
  .stat-number {
    font-size: 44px;
  }

  /* Endorsements */
  .endorsement-card {
    padding: 36px;
  }
  .endorsement-quote {
    font-size: 18px;
  }

  /* Focus Cards */
  .focus-card {
    padding: 28px 24px;
  }

  /* Register */
  .register-form-wrap {
    padding: 40px 28px;
  }
  .register-details {
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
  }
  .register-detail {
    padding: 20px 16px;
  }

  /* Footer */
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
    text-align: left;
  }
  .footer-brand-name {
    justify-content: flex-start;
  }
}

/* =============================================
   MOBILE LANDSCAPE / LARGE PHONES (640px and below)
   ============================================= */

/* Lock body scroll when mobile menu is open */
body.nav-open {
  overflow: hidden;
  position: fixed;
  width: 100%;
  height: 100%;
}

@media (max-width: 640px) {
  /* Container */
  .container {
    padding: 0 20px;
  }

  /* Navigation - Mobile Menu */
  .nav {
    padding: 0 20px;
    height: 72px;
    z-index: 1002;
  }
  .nav--scrolled {
    height: 64px;
  }
  .nav-links {
    display: none;
  }
  .nav-hamburger {
    display: flex;
  }
  .nav-links--open {
    display: flex !important;
    flex-direction: column;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.98);
    padding: 32px 24px;
    gap: 0;
    border-top: 1px solid var(--hairline);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    overflow-y: auto;
    z-index: 1001;
  }
  .nav-links--open .nav-link {
    padding: 16px 0;
    border-bottom: 1px solid var(--hairline);
    font-size: 15px;
  }
  .nav-links--open .nav-cta {
    margin-top: 24px;
    text-align: center;
    width: 100%;
    justify-content: center;
  }
  /* Mobile dropdown */
  .nav-links--open .nav-dropdown {
    width: 100%;
  }
  .nav-links--open .nav-link--dropdown {
    width: 100%;
    justify-content: space-between;
    padding: 16px 0;
    border-bottom: 1px solid var(--hairline);
  }
  .nav-links--open .nav-dropdown-menu {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    box-shadow: none;
    border: none;
    border-radius: 0;
    padding: 0 0 0 20px;
    background: transparent;
    display: none;
  }
  .nav-links--open .nav-dropdown.open .nav-dropdown-menu {
    display: block;
  }
  .nav-links--open .nav-dropdown-item {
    padding: 12px 0;
    border-bottom: 1px solid var(--ink-08);
  }

  /* Hero */
  .hero-content {
    padding: 120px 0 80px;
  }
  .hero-title {
    font-size: clamp(26px, 7vw, 36px);
    margin-bottom: 24px;
  }
  .hero-subtitle {
    font-size: 15px;
    margin-bottom: 36px;
    max-width: 100%;
    width: 100%;
    word-wrap: break-word;
    overflow-wrap: break-word;
  }
  .hero-badge {
    padding: 8px 16px;
    margin-bottom: 28px;
  }
  .hero-badge-text {
    font-size: 11px;
  }

  /* Countdown */
  .countdown {
    gap: 8px;
    margin-bottom: 32px;
    justify-content: center;
  }
  .countdown-unit {
    min-width: 68px;
    padding: 14px 10px;
  }
  .countdown-value {
    font-size: 26px;
  }
  .countdown-label {
    font-size: 8px;
    margin-top: 6px;
  }

  /* Buttons */
  .btn {
    padding: 16px 28px;
    font-size: 11px;
    width: 100%;
    justify-content: center;
  }
  .hero-actions {
    flex-direction: column;
    gap: 16px;
    width: 100%;
  }
  .hero-meta {
    text-align: center;
    white-space: nowrap;
    font-size: 12px;
  }

  /* Manifesto */
  .manifesto {
    padding: 80px 0;
  }
  .manifesto-text {
    font-size: clamp(22px, 6vw, 32px);
  }

  /* Section Padding */
  .stakes,
  .about,
  .comparison,
  .output,
  .system,
  .endorsements,
  .register,
  .focus {
    padding: 80px 0;
  }

  /* Stakes */
  .stakes-title {
    font-size: clamp(26px, 7vw, 36px);
    margin-bottom: 32px;
  }
  .stakes-text {
    font-size: 15px;
  }
  .stakes-quote {
    padding: 28px;
    border-radius: 16px;
  }
  .stakes-quote p {
    font-size: clamp(16px, 4vw, 20px);
  }

  /* Stats */
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  .stat-card {
    padding: 24px 16px;
    border-radius: 16px;
  }
  .stat-number {
    font-size: 36px;
    margin-bottom: 8px;
  }
  .stat-label {
    font-size: 13px;
  }
  .stat-desc {
    font-size: 11px;
  }

  /* Protocol */
  .protocol {
    padding: 32px 20px;
    border-radius: 16px;
  }
  .protocol-label {
    font-size: 10px;
    margin-bottom: 16px;
  }
  .protocol-title {
    font-size: clamp(20px, 5vw, 26px);
    margin-bottom: 28px;
  }
  .protocol-step {
    min-width: 100px;
    padding: 16px 10px;
  }
  .protocol-step-num {
    width: 28px;
    height: 28px;
    font-size: 11px;
    margin-bottom: 10px;
  }
  .protocol-step-name {
    font-size: 12px;
    margin-bottom: 4px;
  }
  .protocol-step-desc {
    font-size: 10px;
  }
  .protocol-footer {
    font-size: 12px;
    margin-top: 24px;
  }

  /* Comparison */
  .comparison-title {
    font-size: clamp(24px, 6vw, 36px);
  }
  .comparison-table-wrap {
    border-radius: 16px;
  }
  .comparison-table th,
  .comparison-table td {
    padding: 14px 16px;
    font-size: 11px;
  }

  /* Output */
  .output-title {
    font-size: clamp(26px, 7vw, 36px);
  }
  .output-text {
    font-size: 15px;
  }
  .output-features li {
    font-size: 14px;
  }
  .output-preview {
    padding: 28px;
    border-radius: 16px;
  }
  .output-preview-card {
    padding: 24px;
    border-radius: 12px;
  }
  .output-preview-title {
    font-size: 18px;
  }

  /* System */
  .system-title {
    font-size: clamp(26px, 7vw, 36px);
  }
  .system-subtitle {
    font-size: 15px;
  }
  .system-node {
    padding: 20px 24px;
    border-radius: 16px;
    flex-direction: column;
    text-align: center;
    gap: 16px;
  }
  .system-node-marker {
    margin: 0 auto;
  }
  .system-node-title {
    font-size: 16px;
  }
  .system-node-desc {
    font-size: 13px;
  }
  .system-connector {
    height: 28px;
  }
  .system-footer {
    font-size: 13px;
    margin-top: 40px;
  }

  /* Endorsements */
  .endorsements-title {
    font-size: clamp(26px, 7vw, 36px);
  }
  .endorsement-card {
    padding: 28px;
    border-radius: 16px;
  }
  .endorsement-quote {
    font-size: 16px;
    margin-bottom: 20px;
  }
  .endorsement-name {
    font-size: 14px;
  }
  .endorsement-role {
    font-size: 12px;
  }

  /* Proof Bar */
  .proof-bar {
    padding: 28px 20px;
    border-radius: 16px;
    gap: 20px;
    flex-direction: column;
  }
  .proof-stat-number {
    font-size: 36px;
  }
  .proof-stat-label {
    font-size: 11px;
  }
  .proof-sep {
    width: 60px;
    height: 1px;
  }

  /* Focus */
  .focus-title {
    font-size: clamp(26px, 7vw, 36px);
  }
  .focus-subtitle {
    font-size: 15px;
  }
  .focus-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .focus-card {
    padding: 24px;
    border-radius: 16px;
  }
  .focus-card-num {
    font-size: 10px;
    margin-bottom: 16px;
  }
  .focus-card-title {
    font-size: 18px;
  }
  .focus-card-text {
    font-size: 13px;
  }

  /* Register */
  .register-title {
    font-size: clamp(26px, 7vw, 36px);
  }
  .register-subtitle {
    font-size: 15px;
  }
  .register-form-wrap {
    padding: 28px 20px;
    border-radius: 16px;
  }
  .form-label {
    font-size: 9px;
  }
  .form-input,
  .form-select,
  .form-textarea {
    padding: 14px 16px;
    font-size: 14px;
  }
  .form-submit {
    padding: 16px 24px;
  }
  .form-note {
    font-size: 11px;
  }
  .register-details {
    grid-template-columns: 1fr;
    gap: 10px;
  }
  .register-detail {
    padding: 20px 16px;
    border-radius: 12px;
  }
  .register-detail-label {
    font-size: 9px;
  }
  .register-detail-value {
    font-size: 14px;
  }

  /* Footer */
  .footer {
    padding: 56px 0 36px;
  }
  .footer-grid {
    gap: 28px;
    margin-bottom: 36px;
  }
  .footer-brand-name img {
    height: 32px;
  }
  .footer-tagline {
    font-size: 13px;
  }
  .footer-desc {
    font-size: 12px;
  }
  .footer-col-title {
    font-size: 11px;
    margin-bottom: 14px;
  }
  .footer-link {
    font-size: 12px;
    margin-bottom: 10px;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: left;
    align-items: flex-start;
    padding-top: 20px;
  }
  .footer-copy {
    font-size: 11px;
  }
}

/* =============================================
   SMALL PHONES (480px and below)
   ============================================= */
@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }
  .nav {
    padding: 0 16px;
  }

  .hero-title {
    font-size: clamp(28px, 8vw, 36px);
  }

  .hero-meta {
    font-size: 11px;
  }

  .countdown {
    flex-wrap: wrap;
    justify-content: center;
  }
  .countdown-unit {
    min-width: 65px;
    padding: 14px 10px;
  }
  .countdown-value {
    font-size: 28px;
  }

  .stats-grid {
    gap: 10px;
  }
  .stat-card {
    padding: 20px 12px;
  }
  .stat-number {
    font-size: 30px;
  }

  .comparison-table th,
  .comparison-table td {
    padding: 12px;
    font-size: 10px;
  }

  .proof-bar {
    padding: 24px 16px;
  }
  .proof-stat-number {
    font-size: 32px;
  }

  .endorsement-quote {
    font-size: 15px;
  }

  .register-form-wrap {
    padding: 24px 16px;
  }
}

/* =============================================
   PRINT STYLES
   ============================================= */
@media print {
  .nav,
  .hero-proof,
  .countdown,
  .hero-actions,
  .btn,
  .form-submit,
  .footer {
    display: none !important;
  }

  .hero {
    min-height: auto;
    padding: 40px 0;
  }

  section {
    padding: 40px 0 !important;
    page-break-inside: avoid;
  }

  * {
    color: #000 !important;
    background: #fff !important;
  }
}