/* ============================================================
   REN Platform - Base Styles & Design Tokens
   'The Digital Village' - Interactive Editorial
   ============================================================ */

/* ---- Design Tokens ---- */
:root {
    /* Primary palette */
    --navy:          #0f1729;
    --navy-light:    #1a2540;
    --navy-mid:      #243352;
    --sage:          #8ba888;
    --sage-light:    #a8c4a5;
    --sage-pale:     #d4e5d1;
    --sage-muted:    rgba(139, 168, 136, 0.15);
    --amber:         #d4a035;
    --amber-light:   #e8bc5a;
    --amber-glow:    rgba(212, 160, 53, 0.25);
  
    /* Neutral palette */
    --cream:         #f5f0e8;
    --cream-light:   #faf7f2;
    --warm-white:    #fffdf9;
    --slate:         #94a3b8;
    --slate-dark:    #64748b;
  
    /* Text */
    --text-primary:   #0f1729;
    --text-secondary: #475569;
    --text-tertiary:  #94a3b8;
    --text-on-dark:   #e2e8f0;
    --text-on-dark-secondary: rgba(226, 232, 240, 0.7);
  
    /* Glass surfaces */
    --glass-bg:       rgba(255, 253, 249, 0.55);
    --glass-bg-hover: rgba(255, 253, 249, 0.8);
    --glass-border:   rgba(139, 168, 136, 0.2);
    --glass-border-hover: rgba(139, 168, 136, 0.45);
  
    /* Shadows (layered depth system) */
    --shadow-sm:  0 1px 3px rgba(15, 23, 41, 0.06);
    --shadow-md:  0 4px 16px rgba(15, 23, 41, 0.08);
    --shadow-lg:  0 8px 32px rgba(15, 23, 41, 0.10);
    --shadow-xl:  0 16px 48px rgba(15, 23, 41, 0.12);
    --shadow-float: 0 24px 64px rgba(15, 23, 41, 0.16);
  
    /* Radii */
    --radius-sm:  8px;
    --radius-md:  12px;
    --radius-lg:  20px;
    --radius-xl:  28px;
  
    /* Transitions */
    --ease-out:   cubic-bezier(0.22, 1, 0.36, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
    --transition: all 0.4s var(--ease-out);
    --transition-fast: all 0.2s var(--ease-out);
  
    /* Fluid type scale */
    --fs-xs:   clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
    --fs-sm:   clamp(0.875rem, 0.82rem + 0.28vw, 1rem);
    --fs-base: clamp(1rem, 0.92rem + 0.4vw, 1.125rem);
    --fs-lg:   clamp(1.125rem, 1rem + 0.6vw, 1.375rem);
    --fs-xl:   clamp(1.5rem, 1.2rem + 1.5vw, 2.25rem);
    --fs-2xl:  clamp(2rem, 1.5rem + 2.5vw, 3.25rem);
    --fs-3xl:  clamp(2.5rem, 1.8rem + 3.5vw, 4.5rem);
    --fs-display: clamp(3rem, 2rem + 5vw, 6rem);
  
    /* Layout */
    --max-width: 1280px;
    --section-padding: clamp(4rem, 8vw, 9rem);
  }
  
  /* ---- Reset ---- */
  *,
  *::before,
  *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }
  
  body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    font-size: var(--fs-base);
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--warm-white);
    overflow-x: hidden;
  }
  
  h1, h2, h3, h4, h5, h6 {
    font-family: 'Space Grotesk', system-ui, sans-serif;
    font-weight: 600;
    line-height: 1.15;
    text-wrap: balance;
  }
  
  img {
    max-width: 100%;
    height: auto;
    display: block;
  }
  
  a {
    color: inherit;
    text-decoration: none;
  }
  
  ul, ol {
    list-style: none;
  }
  
  button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
  }
  
  /* ---- Utility Classes ---- */
  .container {
    width: 100%;
    max-width: var(--max-width);
    margin-inline: auto;
    padding-inline: clamp(1.25rem, 3vw, 2.5rem);
  }
  
  .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;
  }
  
  /* ---- Scroll Progress Bar ---- */
  .scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    width: 0%;
    background: linear-gradient(90deg, var(--sage), var(--amber));
    z-index: 10001;
    transition: width 0.1s linear;
    pointer-events: none;
  }
  
  /* ---- Custom Cursor ---- */
  .cursor-dot {
    position: fixed;
    top: 0;
    left: 0;
    width: 8px;
    height: 8px;
    background: var(--sage);
    border-radius: 50%;
    pointer-events: none;
    z-index: 99999;
    opacity: 0;
    transition: opacity 0.3s, width 0.3s var(--ease-spring), height 0.3s var(--ease-spring), background 0.3s;
    transform: translate(-50%, -50%);
    mix-blend-mode: difference;
  }
  
  .cursor-ring {
    position: fixed;
    top: 0;
    left: 0;
    width: 36px;
    height: 36px;
    border: 1.5px solid rgba(139, 168, 136, 0.4);
    border-radius: 50%;
    pointer-events: none;
    z-index: 99998;
    opacity: 0;
    transition: opacity 0.3s, width 0.4s var(--ease-out), height 0.4s var(--ease-out), border-color 0.3s;
    transform: translate(-50%, -50%);
  }
  
  body:hover .cursor-dot,
  body:hover .cursor-ring {
    opacity: 1;
  }
  
  body.cursor-hover .cursor-dot {
    width: 48px;
    height: 48px;
    background: rgba(139, 168, 136, 0.15);
  }
  
  body.cursor-hover .cursor-ring {
    width: 60px;
    height: 60px;
    border-color: var(--sage);
  }
  
  /* ---- Glass Card Base ---- */
  .glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
  }
  
  .glass-card:hover {
    background: var(--glass-bg-hover);
    border-color: var(--glass-border-hover);
    box-shadow: var(--shadow-lg);
  }
  
  /* ---- Messages ---- */
  .messages {
    max-width: var(--max-width);
    margin-inline: auto;
    padding: 1rem clamp(1.25rem, 3vw, 2.5rem);
  }
  
  .message {
    padding: 0.875rem 1.25rem;
    border-radius: var(--radius-md);
    margin-bottom: 0.5rem;
    font-size: var(--fs-sm);
    font-weight: 500;
    animation: slideDown 0.4s var(--ease-spring);
  }
  
  .message.success {
    background: rgba(139, 168, 136, 0.15);
    color: #2d5a27;
    border: 1px solid rgba(139, 168, 136, 0.3);
  }
  
  .message.error {
    background: rgba(220, 53, 69, 0.1);
    color: #9b1c2b;
    border: 1px solid rgba(220, 53, 69, 0.2);
  }
  
  .message.warning {
    background: var(--amber-glow);
    color: #8a6914;
    border: 1px solid rgba(212, 160, 53, 0.3);
  }
  
  .message.info {
    background: rgba(15, 23, 41, 0.06);
    color: var(--navy);
    border: 1px solid rgba(15, 23, 41, 0.1);
  }
  
  /* ---- Toast ---- */
  .toast-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
  }
  
  /* ---- Keyframes ---- */
  @keyframes slideDown {
    from {
      opacity: 0;
      transform: translateY(-12px) scale(0.97);
    }
    to {
      opacity: 1;
      transform: translateY(0) scale(1);
    }
  }
  
  @keyframes fadeInUp {
    from {
      opacity: 0;
      transform: translateY(30px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
  
  @keyframes fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
  }
  
  @keyframes scaleIn {
    from {
      opacity: 0;
      transform: scale(0.9);
    }
    to {
      opacity: 1;
      transform: scale(1);
    }
  }
  
  @keyframes shimmer {
    0%   { background-position: -200% 0; }
    100% { background-position: 200% 0; }
  }
  
  @keyframes float {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(-12px); }
  }
  
  /* ---- Selection ---- */
  ::selection {
    background: var(--sage-pale);
    color: var(--navy);
  }
  
  /* ---- Focus Styles ---- */
  :focus-visible {
    outline: 2px solid var(--sage);
    outline-offset: 3px;
    border-radius: 4px;
  }
  
  /* ---- Scrollbar ---- */
  ::-webkit-scrollbar {
    width: 8px;
  }
  
  ::-webkit-scrollbar-track {
    background: var(--cream);
  }
  
  ::-webkit-scrollbar-thumb {
    background: var(--slate);
    border-radius: 4px;
  }
  
  ::-webkit-scrollbar-thumb:hover {
    background: var(--slate-dark);
  }
  
  /* ---- Hide custom cursor on touch devices ---- */
  @media (hover: none), (pointer: coarse) {
    .cursor-dot,
    .cursor-ring {
      display: none !important;
    }
  }

  /* ---- Navbar user dropdown (all pages with nav) ---- */
  .site-nav-user-wrap {
    position: relative;
    display: inline-flex;
    align-items: center;
  }

  .site-nav-greeting,
  .site-nav-greeting-btn {
    font-weight: 700;
    font-size: var(--fs-sm);
    color: var(--navy);
    letter-spacing: 0.02em;
    padding: 0;
    padding-bottom: 2px;
    background: none;
    border: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s ease, opacity 0.2s ease;
    animation: navGreetingFadeIn 0.5s ease-out;
  }

  .site-nav-greeting-btn {
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font: inherit;
  }

  .site-nav-greeting-btn:hover {
    border-bottom-color: currentColor;
    opacity: 0.9;
  }

  .site-nav-greeting-chevron {
    display: inline-flex;
    opacity: 0.7;
    transition: transform 0.2s ease, opacity 0.2s ease;
  }

  .site-nav-greeting-btn:hover .site-nav-greeting-chevron,
  .site-nav-greeting-btn[aria-expanded="true"] .site-nav-greeting-chevron {
    opacity: 1;
  }

  .site-nav-greeting-btn[aria-expanded="true"] .site-nav-greeting-chevron {
    transform: rotate(180deg);
  }

  .site-nav-greeting-btn:focus-visible {
    outline: 2px solid var(--sage);
    outline-offset: 2px;
  }

  @keyframes navGreetingFadeIn {
    from {
      opacity: 0;
      transform: translateY(-4px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  .site-nav-user-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 0.5rem;
    min-width: 180px;
    background: var(--warm-white);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    padding: 0.5rem 0;
    z-index: 1000;
  }

  .site-nav-user-menu[hidden] {
    display: none;
  }

  .site-nav-user-menu:not([hidden]) {
    display: block;
  }

  .site-nav-user-menu-item {
    display: block;
    padding: 0.5rem 1rem;
    font-size: var(--fs-sm);
    color: var(--text-primary);
    text-decoration: none;
    transition: background 0.15s ease;
  }

  .site-nav-user-menu-item:hover {
    background: var(--sage-muted);
    color: var(--text-primary);
  }

  .site-nav-user-menu-item-logout {
    color: var(--text-secondary);
    border-top: 1px solid var(--glass-border);
  }

  .site-nav-user-menu-item-logout:hover {
    color: var(--navy);
  }