/* ---------- CSS Variables ---------- */
    :root {
      --header-height: 64px;

      /* Colors */
      --bg-primary: #ffffff;
      --bg-secondary: #f8fafc;
      --bg-tertiary: #f1f5f9;
      --bg-elevated: #ffffff;

      --text-primary: #191a1b;
      --text-secondary: #64748b;
      --text-tertiary: #94a3b8;
      --text-inverse: #ffffff;

      --border-primary: #e2e8f0;
      --border-secondary: #cbd5e1;
      --border-hover: #94a3b8;

      --accent-primary: #191a1b;
      --accent-primary-hover: #64748b;
      --accent-secondary: #0f6fff;
      --accent-secondary-hover: #005fec;

      --box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
      --gradient-text: linear-gradient(45deg, #1625ff 0%, #2bb4aa 60%, #1625ff 85%);

      /* Layout / Motion */
      --spacing-xs: 0.25rem;
      --spacing-sm: 0.5rem;
      --spacing-md: 1rem;
      --spacing-lg: 1.5rem;
      --spacing-xl: 2rem;
      --spacing-2xl: 3rem;
      --radius-sm: 0rem;
      --radius-md: 0.5rem;
      --radius-lg: 0.75rem;
      --radius-pill: 30px;
      --shadow-md: 0 4px 10px rgba(0, 0, 0, 0.08);
      --transition-fast: 100ms ease-in-out;
      --transition-normal: 250ms ease-in-out;

      /* Type */
      --font-size-sm: 0.875rem;
      --font-size-base: 1rem;
      --font-size-lg: 1.125rem;

      /* Components */
      --flip-speed: 0.25s;
      /* <needed for nav button flip */

      /* Mobile nav */
      --mobile-nav-bg: var(--bg-elevated);

      --color-blur: #ffffffad;
    }

    .dark {
      --gradient-text: linear-gradient(45deg, #fff 0%, #71d3cb 60%, #1625ff 85%);
      --bg-primary: #121416;
      --bg-secondary: #16191b;
      --bg-tertiary: #1e1f22;
      --bg-elevated: #1d2025;
      --color-blur: #121416ad;

      --text-primary: #f2f3f5;
      --text-secondary: #bed3df;
      --text-tertiary: #94aab4;
      --text-inverse: #191a1b;

      --border-primary: #2c3033;
      --border-secondary: #353a3d;
      --border-hover: #424d57;

      --accent-primary: #ffffff;
      --accent-primary-hover: #e9eaec;
      --accent-secondary: #0f6fff;
      --accent-secondary-hover: #005fec;
      --box-shadow: 0 12px 32px rgba(0, 0, 0, 0.58);
      --mobile-nav-bg: var(--bg-elevated);
    }

    /* ---------- Reset-ish ---------- */
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    body {
      font-family: "Inter", sans-serif;
      background: var(--bg-primary);
      color: var(--text-primary);
      line-height: 1.7;
      overflow-x: hidden;
      min-height: 100vh;
    }

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

    button,
    input,
    select,
    textarea {
      font: inherit;
      color: inherit;
      line-height: inherit;
      letter-spacing: inherit;
      background: none;
      border: none;
    }

    i[class^="ti"] {
      font-size: 1em;
      line-height: 1;
    }

    /* ==============================
       HEADER (shared component)
    =============================== */
    .header {
      background-color: transparent;
      /* border-bottom:1px solid var(--border-primary); */
      padding: 0 var(--spacing-lg);
      position: sticky;
      top: 0;
      z-index: 1000;
      transition: all var(--transition-fast);
      border-bottom: 1px solid transparent;
      background: var(--bg-primary);
      border-bottom: 1px solid var(--border-primary);
    }

    .header {
      position: sticky;
      top: 0;
      z-index: 1000;
    }

    .header--fixed {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 2001;
    }

    /* Solid header when scrolled */
    .header--solid {
      background: var(--bg-primary);
      border-bottom: 1px solid var(--border-primary);
    }

    .header-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: var(--header-height);
      margin: 0 auto;
    }

    .header-left {
      display: flex;
      align-items: center;
      gap: var(--spacing-md);
    }

    .logo-btn {
      padding: 0.5rem 0.75rem;
      border-radius: var(--radius-md);
      padding-left: 0;
      border: 1px solid #fff0;
      text-transform: uppercase;
      font-weight: 600;
      letter-spacing: 1px;
      transition: all var(--transition-fast);
      color: var(--text-primary);
      font-size: var(--font-size-lg);
      white-space: nowrap;
    }

    .logo-span {
      color: var(--text-tertiary);
      transition: all var(--transition-fast);
    }

    .logo-btn:hover .logo-span {
      color: var(--accent-secondary);
    }

    .header-right {
      display: flex;
      gap: 0.75rem;
      align-items: center;
    }

    @media (max-width: 860px) {
      .header {
        padding: 0 var(--spacing-sm);
      }
    }

    button {
      cursor: pointer
    }

    .btn {
      display: inline-flex;
      align-items: center;
      gap: 0.25rem;
      padding: 0.5rem 1rem;
      border-radius: var(--radius-md);
      font-size: var(--font-size-base);
      transition: all var(--transition-fast);
    }

    .btn-secondary {
      background: var(--bg-secondary);
      color: var(--text-primary);
      border: 1px solid var(--border-primary);
    }

    .btn-secondary:hover {
      background: var(--bg-tertiary);
      border-color: var(--border-hover);
    }

    .btn-open {
      position: relative;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 0.5rem 1.25rem;
      border: 1px solid transparent;
      background: var(--accent-primary);
      color: var(--text-inverse);
      border-radius: var(--radius-pill);
      overflow: hidden;
      transition: all 0.35s ease;
      white-space: nowrap;
    }

    .btn-open.fill-sweep::before {
      content: "";
      position: absolute;
      inset: 0;
      width: 0%;
      height: 100%;
      background: var(--text-inverse);
      transition: width 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
      z-index: 0;
    }

    .btn-open.fill-sweep span {
      position: relative;
      z-index: 1;
      transition: color 0.35s ease;
    }

    .btn-open.fill-sweep:hover {}

    .btn-open.fill-sweep:hover::before {
      width: 100%;
    }

    .btn-open.fill-sweep:hover span {
      color: var(--accent-primary);
    }

    @media (prefers-reduced-motion: reduce) {
      .btn-open.fill-sweep::before {
        transition: none;
        width: 100%;
      }

      .btn-open.fill-sweep {
        transition: none;
      }
    }

    @media (max-width: 550px) {
      .btn-open {
        padding: 0.5rem 0.75rem;
        font-size: var(--font-size-sm);
      }

      .logo-btn {
        padding: 0.5rem 0.5rem;
        padding-left: 0;
        font-size: var(--font-size-md);
      }
    }

    /* Primary nav (desktop) */
    .nav-menu {
      display: flex;
      gap: 1rem;
      padding: 0 0rem;
    }

    .nav-item {
      position: relative;
      display: inline-block;
      line-height: var(--font-size-base);
      perspective: 800px;
    }

    .nav-active.btn-flip::before {
      color: var(--text-primary);
    }

    .btn-flip::before {
      content: attr(data-front);
      display: block;
      padding: 0.5rem 0.75rem;
      background: transparent;
      color: var(--text-secondary);
      transition: transform var(--flip-speed) ease, opacity var(--flip-speed) ease;
      transform: translateY(0) rotateX(0);
      will-change: transform, opacity;
      backface-visibility: hidden;
    }

    .btn-flip::after {
      content: attr(data-back);
      position: absolute;
      inset: 0;
      display: flex;
      justify-content: center;
      align-items: center;
      background: transparent;
      color: var(--text-primary);
      opacity: 0;
      transform: translateY(100%) rotateX(-90deg);
      transition: transform var(--flip-speed) ease, opacity var(--flip-speed) ease;
      will-change: transform, opacity;
      backface-visibility: hidden;
    }

    .btn-flip:hover::after,
    .btn-flip:focus-visible::after {
      opacity: 1;
      transform: translateY(0) rotateX(0);
    }

    .btn-flip:hover::before,
    .btn-flip:focus-visible::before {
      opacity: 0;
      transform: translateY(-100%) rotateX(-90deg);
    }

    /* Dropdown */
    .dropdown {
      position: relative;
    }

    .dropdown-trigger {
      cursor: pointer;
      padding: 0.5rem;
      border-radius: var(--radius-md);
      background: var(--bg-secondary);
    }

    .dropdown-trigger:hover {
      background: var(--bg-tertiary);
    }

    .profile-avatar {
      width: 32px;
      height: 32px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--text-inverse);
      font-weight: 600;
      font-size: var(--font-size-sm);
    }

    .dropdown-menu {
      position: absolute;
      top: calc(100% + 4px);
      right: 0;
      min-width: 240px;
      background: var(--bg-primary);
      border: 1px solid var(--border-primary);
      border-radius: 8px;
      box-shadow: var(--box-shadow);
      z-index: 1000;
      overflow: hidden;
      transform-origin: 90% 0;
      transform: translateY(-6px) scaleY(0.96);
      opacity: 0;
      visibility: hidden;
      transition: transform 100ms cubic-bezier(0.18, 0.89, 0.32, 1.28),
        opacity 120ms cubic-bezier(0.2, 0.8, 0.2, 1), visibility 0s linear 100ms;
      will-change: transform, opacity;
    }

    .dropdown-menu.active {
      visibility: visible;
      transform: translateY(0) scaleY(1);
      opacity: 1;
      transition: transform 100ms cubic-bezier(0.18, 0.89, 0.32, 1.28),
        opacity 80ms cubic-bezier(0.2, 0.8, 0.2, 1), visibility 0s;
    }

    .dropdown-item {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      padding: 1rem;
      width: 100%;
      color: var(--text-primary);
      text-align: left;
      cursor: pointer;
      font-size: var(--font-size-base);
      line-height: 1.25;
    }

    .dropdown-item:hover {
      background: var(--bg-secondary);
    }

    .dropdown-item.hidden {
      display: none;
    }

    .dropdown-divider {
      height: 1px;
      background: var(--border-primary);
    }

    /* Theme switch (inside dropdown) */
    .theme-switch {
      --switch-h: 28px;
      --switch-w: 54px;
      --knob: 22px;
      position: relative;
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
      gap: 0.75rem;
    }

    .theme-switch .label {
      flex: 1;
    }

    .switch {
      position: relative;
      width: var(--switch-w);
      height: var(--switch-h);
      background: var(--bg-secondary);
      border: 1px solid var(--border-primary);
      border-radius: 999px;
      transition: background var(--transition-fast), border-color var(--transition-fast);
      flex: 0 0 auto;
      cursor: pointer;
    }

    .switch-knob {
      position: absolute;
      top: 50%;
      transform: translateY(-50%);
      left: 3px;
      width: var(--knob);
      height: var(--knob);
      border-radius: 50%;
      background: var(--accent-primary);
      transition: left var(--transition-fast), background var(--transition-fast);
      box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
      cursor: pointer;
    }

    body.dark .switch-knob {
      background: var(--accent-secondary);
    }

    .switch--on .switch-knob {
      left: calc(var(--switch-w) - var(--knob) - 6px);
    }

    .switch-icons {
      position: absolute;
      inset: 0;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 7px;
      pointer-events: none;
      font-size: 14px;
      color: var(--text-secondary);
    }

    /* ==============================
       MOBILE NAV (shared)
    =============================== */
    .hamburger {
      display: none;
      align-items: center;
      justify-content: center;
      width: 40px;
      height: 40px;
      border-radius: var(--radius-md);
      cursor: pointer;
    }

    .hamburger:hover {
      background: var(--bg-secondary);
    }

    .hamburger .bar {
      width: 20px;
      height: 2px;
      background: var(--text-primary);
      position: relative;
    }

    .hamburger .bar::before,
    .hamburger .bar::after {
      content: "";
      position: absolute;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--text-primary);
      transition: transform var(--transition-fast), opacity var(--transition-fast);
    }

    .hamburger .bar::before {
      top: -6px;
    }

    .hamburger .bar::after {
      top: 6px;
    }

    .hamburger[aria-expanded="true"] .bar {
      background: transparent;
    }

    .hamburger[aria-expanded="true"] .bar::before {
      transform: translateY(6px) rotate(45deg);
    }

    .hamburger[aria-expanded="true"] .bar::after {
      transform: translateY(-6px) rotate(-45deg);
    }

    .mobile-nav {
      position: fixed;
      top: var(--header-height);
      left: 0;
      right: 0;
      background: var(--mobile-nav-bg);
      border-bottom: 1px solid var(--border-primary);
      transform: translateY(-110%);
      opacity: 0;
      visibility: hidden;
      transition: transform var(--transition-normal), opacity var(--transition-fast),
        visibility var(--transition-fast);
      z-index: 900;
    }

    .mobile-nav.open {
      transform: translateY(0);
      opacity: 1;
      visibility: visible;
    }

    .mobile-nav-inner {
      max-width: 1200px;
      margin: 0 auto;
      padding: var(--spacing-md) var(--spacing-lg);
    }

    .mobile-nav a {
      display: block;
      padding: 0.875rem 0;
      border-top: 1px solid var(--border-primary);
      color: var(--text-secondary);
    }

    .mobile-nav a:hover {
      color: var(--text-primary);
    }

    .mobile-nav a:first-child {
      border-top: none;
    }

    .notif-badge {
      position: absolute;
      top: 3px;
      right: -3px;
      min-width: 24px;
      height: 24px;
      padding: 0 4px;
      line-height: 19px;
      font-size: 12px;
      font-weight: 500;
      color: white;
      background: var(--accent-secondary);
      border-radius: 999px;
      text-align: center;
      pointer-events: none;
      border: 2px solid var(--bg-primary);
    }

    .notif-badge.hidden {
      display: none !important;
    }

    .notif-badge.dot {
      min-width: 10px;
      width: 10px;
      height: 10px;
      padding: 0;
      line-height: 10px;
      font-size: 0;
      border-radius: 50%;
    }

    /* ==============================
       PAGE SHELL (shared for non-home)
    =============================== */
    .page {
      min-height: calc(100vh - var(--header-height));
      background: var(--bg-primary);
    }

    .container {
      width: 100%;
      max-width: 1400px;
      margin: 0 auto;
      padding: clamp(14px, 4vw, 40px) clamp(16px, 4vw, 24px);
      padding-top: 0px;
    }

    .container-status {
      padding: clamp(14px, 4vw, 40px) clamp(16px, 4vw, 24px);

      padding-bottom: 0;
    }

    .page-title {
      font-family: "Google Sans", sans-serif;
      font-size: clamp(24px, 5vw, 40px);
      font-weight: 500;
      line-height: 1.2;
      margin-bottom: 0.5rem;
      color: var(--text-primary);
    }

    .page-subtitle {
      color: var(--text-secondary);
      margin-bottom: clamp(12px, 2vw, 24px);
      max-width: 65ch;
    }

    /* Responsive */
    @media (max-width: 980px) {
      .nav-menu {
        display: none;
      }

      .hamburger {
        display: flex;
      }
    }

    /* ==============================
   FOOTER
============================== */
    .site-footer {
      position: relative;
      z-index: 1;
      background: var(--color-blur);
      backdrop-filter: blur(25px);
      border-top: 1px solid var(--border-primary);
    }

    .footer-container {
      max-width: 1200px;
      margin: 0 auto;
      padding: clamp(18px, 3vw, 28px) clamp(16px, 4vw, 24px);
      display: grid;
      grid-template-columns: 1fr auto;
      align-items: center;
      gap: 12px 24px;
    }

    .footer-logo {
      padding-left: 0;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      border: 1px solid #fff0;
      /* keep hover behavior consistent */
      font-size: 1.05rem;
    }

    .footer-logo i {
      font-size: 1.15rem;
    }

    .footer-tagline {
      grid-column: 1 / 2;
      margin: 0;
      color: var(--text-tertiary);
      font-size: 0.95rem;
      line-height: 1.4;
    }

    .footer-right {
      grid-column: 2 / 3;
      display: flex;
      align-items: center;
      gap: 14px;
    }

    .footer-links {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      color: var(--text-secondary);
      font-size: 0.95rem;
    }

    .footer-link {
      color: var(--text-secondary);
      border-bottom: 1px solid transparent;
      transition: color var(--transition-fast), border-color var(--transition-fast);
    }

    .footer-link:hover {
      color: var(--text-primary);
      border-color: var(--border-hover);
    }

    .footer-links .dot {
      color: var(--border-hover);
    }

    .footer-socials {
      display: inline-flex;
      gap: 8px;
      margin-left: 6px;
    }

    .social-btn {
      width: 36px;
      height: 36px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 10px;
      background: var(--bg-secondary);
      border: 1px solid var(--border-primary);
      color: var(--text-primary);
      transition: transform var(--transition-fast), background var(--transition-fast),
        border-color var(--transition-fast), color var(--transition-fast);
    }

    .social-btn:hover {
      background: var(--bg-tertiary);
      border-color: var(--border-hover);
      transform: translateY(-1px);
    }

    .footer-bottom {
      border-top: 1px solid var(--border-primary);
      padding: 10px clamp(16px, 4vw, 24px);
      color: var(--text-tertiary);
      font-size: 0.85rem;
      text-align: center;
    }

    /* Responsive */
    @media (max-width: 860px) {
      .footer-container {
        grid-template-columns: 1fr;
        align-items: start;
      }

      .footer-right {
        grid-column: 1 / -1;
        justify-content: space-between;
        gap: 10px;
      }
    }

    @media (max-width: 520px) {
      .footer-right {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
      }

      .footer-links {
        gap: 8px;
      }
    }