/* =====================================================
       ΣΤΥΛ — Αυτό ελέγχει πώς φαίνονται όλα!
       Σκέψου το σαν να διαλέγεις χρώματα για τουβλάκια LEGO.
    ===================================================== */

    @import url('/static/fonts/comfortaa.css'); /* γραμματοσειρά Comfortaa από το hub (όχι Google Fonts) */

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

    body {
      background: #0a0015;
      background-image:
        radial-gradient(ellipse at top, #1a0035 0%, #0a0015 60%),
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='400' height='400'%3E%3Ccircle cx='50' cy='80' r='1.2' fill='white' opacity='0.8'/%3E%3Ccircle cx='120' cy='30' r='0.8' fill='white' opacity='0.6'/%3E%3Ccircle cx='200' cy='110' r='1.5' fill='white' opacity='0.9'/%3E%3Ccircle cx='310' cy='60' r='1' fill='white' opacity='0.7'/%3E%3Ccircle cx='370' cy='150' r='0.7' fill='white' opacity='0.5'/%3E%3Ccircle cx='80' cy='200' r='1.3' fill='white' opacity='0.8'/%3E%3Ccircle cx='250' cy='250' r='1' fill='white' opacity='0.6'/%3E%3Ccircle cx='160' cy='320' r='0.9' fill='white' opacity='0.7'/%3E%3Ccircle cx='340' cy='280' r='1.2' fill='white' opacity='0.9'/%3E%3Ccircle cx='30' cy='350' r='0.8' fill='white' opacity='0.5'/%3E%3Ccircle cx='390' cy='370' r='1.1' fill='white' opacity='0.7'/%3E%3Ccircle cx='220' cy='390' r='0.7' fill='white' opacity='0.6'/%3E%3C/svg%3E");
      font-family: 'Exo 2', 'Comfortaa', 'Arial', sans-serif;
      color: #e8e8ff;
      min-height: 100vh;
      padding: 16px;
      padding-top: 50px;
      overflow-x: hidden;
    }
    /* Όταν το μενού πάει σε 2 ή 3 γραμμές, αφήνουμε περισσότερο χώρο από πάνω */
    @media (max-width: 900px) { body { padding-top: 84px; } }
    @media (max-width: 480px) { body { padding-top: 110px; } }

    /* ── Navbar πλοήγησης ── */
    #top-nav {
      position: fixed; top: 0; left: 0; right: 0; z-index: 9999;
      background: rgba(10, 0, 21, 0.95);
      border-bottom: 1px solid #ffe81f44;
      display: flex; align-items: center; justify-content: center;
      /* Σε μικρή οθόνη (κινητό) οι σύνδεσμοι πάνε σε 2η γραμμή αντί να «κόβονται» */
      flex-wrap: wrap;
      gap: 8px; padding: 6px 12px;
      box-shadow: 0 2px 16px #ffe81f22;
      backdrop-filter: blur(4px);
    }
    #top-nav a {
      font-family: 'Orbitron', 'Comfortaa', monospace;
      font-size: clamp(0.6rem, 2vw, 0.78rem);
      color: #ffe81f;
      text-decoration: none;
      border: 1px solid #ffe81f44;
      border-radius: 4px;
      padding: 4px 10px;
      letter-spacing: 1px;
      transition: all 0.2s;
      white-space: nowrap;
    }
    #top-nav a:hover { border-color: #ffe81f; background: #ffe81f18; box-shadow: 0 0 10px #ffe81f44; }
    #top-nav .nav-divider { color: #ffe81f55; font-size: 1rem; }
    #top-nav .nav-title {
      font-family: 'Orbitron', 'Comfortaa', monospace;
      font-size: clamp(0.55rem, 1.8vw, 0.7rem);
      color: #ffe81f88; letter-spacing: 2px;
      margin: 0 4px;
    }

    /* ── Κεφαλίδα ── */
    header { text-align: center; padding: 24px 12px 16px; }

    .welcome-text {
      font-family: 'Orbitron', 'Comfortaa', monospace;
      font-size: clamp(1rem, 4vw, 1.4rem);
      color: #ffe81f;
      text-shadow: 0 0 12px #ffe81f88;
      letter-spacing: 2px;
      margin-bottom: 8px;
    }

    h1 {
      font-family: 'Orbitron', 'Comfortaa', monospace;
      font-size: clamp(1.4rem, 6vw, 2.6rem);
      background: linear-gradient(90deg, #4af, #9f4, #f4a);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      line-height: 1.2;
      margin-bottom: 6px;
    }

    .subtitle {
      font-size: clamp(0.75rem, 2.5vw, 1rem);
      color: #88aaff;
      margin-top: 6px;
    }

    /* ── Διαχωριστής φωτόσπαθου ── */
    .lightsaber {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      margin: 18px auto;
      max-width: 600px;
    }
    .saber-line { flex: 1; height: 3px; border-radius: 2px; box-shadow: 0 0 8px currentColor; }
    .saber-line.blue  { background: #4af; color: #4af; }
    .saber-line.green { background: #4f8; color: #4f8; }
    .saber-handle { font-size: 1.4rem; }

    /* ── Καρτέλες ── */
    .tabs {
      display: flex;
      justify-content: center;
      gap: 10px;
      margin-bottom: 20px;
      flex-wrap: wrap;
    }

    .tab-btn {
      font-family: 'Orbitron', 'Comfortaa', monospace;
      font-size: clamp(0.72rem, 2.2vw, 0.95rem);
      padding: 10px 20px;
      border: 2px solid;
      border-radius: 30px;
      cursor: pointer;
      background: transparent;
      transition: all 0.25s;
      letter-spacing: 1px;
    }

    .tab-btn.animals { color: #4af; border-color: #4af; }
    .tab-btn.animals:hover, .tab-btn.animals.active {
      background: #4af; color: #000; box-shadow: 0 0 18px #4af;
    }

    .tab-btn.plants { color: #4f8; border-color: #4f8; }
    .tab-btn.plants:hover, .tab-btn.plants.active {
      background: #4f8; color: #000; box-shadow: 0 0 18px #4f8;
    }

    /* Καρτέλα Δεινόσαυροι — μωβ/κόκκινο */
    .tab-btn.dino { color: #c084fc; border-color: #c084fc; }
    .tab-btn.dino:hover, .tab-btn.dino.active {
      background: #c084fc; color: #000; box-shadow: 0 0 18px #c084fc;
    }

    /* Καρτέλα Quiz — πορτοκαλί/χρυσό Star Wars */
    .tab-btn.quiz { color: #ffa500; border-color: #ffa500; }
    .tab-btn.quiz:hover, .tab-btn.quiz.active {
      background: #ffa500; color: #000; box-shadow: 0 0 18px #ffa500;
    }

    /* ── Πλέγμα καρτών ── */
    .grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
      gap: 14px;
      max-width: 900px;
      margin: 0 auto 24px;
    }

    .card {
      background: rgba(255,255,255,0.05);
      border: 1.5px solid rgba(255,255,255,0.12);
      border-radius: 16px;
      padding: 18px 10px 14px;
      text-align: center;
      cursor: pointer;
      transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
      user-select: none;
    }
    .card:hover { transform: translateY(-4px) scale(1.04); }

    /* Κάρτες ζώων — μπλε φωτόσπαθο */
    .card.animal { border-color: rgba(68,170,255,0.3); }
    .card.animal:hover { border-color: #4af; box-shadow: 0 0 20px #44aaff55; }

    /* Κάρτες φυτών — πράσινο φωτόσπαθο */
    .card.plant { border-color: rgba(68,255,136,0.3); }
    .card.plant:hover { border-color: #4f8; box-shadow: 0 0 20px #44ff8855; }

    /* Κάρτες δεινόσαυρων — μωβ λάμψη */
    .card.dino { border-color: rgba(192,132,252,0.3); }
    .card.dino:hover { border-color: #c084fc; box-shadow: 0 0 20px #c084fc55; }

    .card-emoji {
      font-size: 3rem; line-height: 1; margin-bottom: 8px; display: block;
      transition: transform 0.15s;
    }
    .card:hover .card-emoji { transform: scale(1.15) rotate(-5deg); }
    .card:active .card-emoji { transform: scale(0.9); }

    .card-name {
      font-family: 'Orbitron', 'Comfortaa', monospace;
      font-size: 0.7rem; letter-spacing: 1px; color: #cce; margin-top: 4px;
    }

    /* ── Πάνελ γεγονότος ── */
    #fact-panel {
      max-width: 680px;
      margin: 0 auto 28px;
      background: rgba(10,0,30,0.92);
      border: 2px solid #ffe81f;
      border-radius: 20px;
      padding: 22px 24px;
      box-shadow: 0 0 28px #ffe81f44, inset 0 0 30px rgba(255,232,31,0.04);
      display: none;
      animation: fadeIn 0.3s ease;
    }

    @keyframes fadeIn {
      from { opacity: 0; transform: translateY(10px); }
      to   { opacity: 1; transform: translateY(0); }
    }

    .fact-header { display: flex; align-items: center; gap: 14px; margin-bottom: 12px; }
    .fact-big-emoji { font-size: 3rem; line-height: 1; flex-shrink: 0; }
    .fact-title { font-family: 'Orbitron', 'Comfortaa', monospace; font-size: clamp(1rem, 3vw, 1.4rem); color: #ffe81f; }
    .fact-text { font-size: clamp(0.9rem, 2.5vw, 1.05rem); line-height: 1.65; color: #dde8ff; }
    .fact-jedi-tip { margin-top: 12px; font-size: 0.82rem; color: #88aaff; font-style: italic; }

    /* ── Quiz section ── */
    #quiz-section {
      max-width: 680px;
      margin: 0 auto 28px;
      background: rgba(10,0,30,0.92);
      border: 2px solid #ffa500;
      border-radius: 20px;
      padding: 28px 24px;
      box-shadow: 0 0 28px #ffa50044;
      animation: fadeIn 0.3s ease;
    }

    .quiz-progress {
      text-align: center;
      font-size: 0.85rem;
      color: #888;
      margin-bottom: 6px;
      letter-spacing: 1px;
    }

    .quiz-score-display {
      text-align: center;
      font-family: 'Orbitron', 'Comfortaa', monospace;
      font-size: 1rem;
      color: #ffa500;
      margin-bottom: 18px;
    }

    .quiz-question-text {
      font-family: 'Orbitron', 'Comfortaa', monospace;
      font-size: clamp(0.95rem, 2.8vw, 1.25rem);
      color: #ffe81f;
      margin-bottom: 22px;
      text-align: center;
      line-height: 1.4;
    }

    .quiz-options {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      margin-bottom: 10px;
    }
    @media (max-width: 400px) { .quiz-options { grid-template-columns: 1fr; } }

    .quiz-option-btn {
      font-family: 'Exo 2', 'Comfortaa', sans-serif;
      font-size: clamp(0.85rem, 2.5vw, 1rem);
      padding: 14px 10px;
      background: rgba(255,165,0,0.08);
      border: 2px solid #ffa500;
      border-radius: 12px;
      color: #ffe8cc;
      cursor: pointer;
      transition: all 0.2s;
      text-align: center;
    }
    .quiz-option-btn:hover:not(:disabled) {
      background: #ffa500; color: #000; box-shadow: 0 0 12px #ffa500;
    }
    .quiz-option-btn.correct { background: #4f8; border-color: #4f8; color: #000; }
    .quiz-option-btn.wrong   { background: #f44; border-color: #f44; color: #fff; }
    .quiz-option-btn:disabled { cursor: default; }

    #quiz-result { text-align: center; padding-top: 8px; }
    .quiz-result-score-text { color: #88aaff; font-size: 1rem; margin-bottom: 10px; }

    .quiz-result-rank {
      font-family: 'Orbitron', 'Comfortaa', monospace;
      font-size: clamp(1.1rem, 3.5vw, 1.7rem);
      color: #ffe81f;
      margin: 8px 0 12px;
      text-shadow: 0 0 16px #ffe81f88;
      line-height: 1.3;
    }

    .quiz-final-score {
      font-size: 1.3rem;
      color: #ffa500;
      font-family: 'Orbitron', 'Comfortaa', monospace;
      margin-bottom: 16px;
    }

    .quiz-restart-btn {
      font-family: 'Orbitron', 'Comfortaa', monospace;
      padding: 12px 28px;
      background: transparent;
      border: 2px solid #ffa500;
      color: #ffa500;
      border-radius: 30px;
      cursor: pointer;
      font-size: 0.9rem;
      transition: all 0.2s;
    }
    .quiz-restart-btn:hover { background: #ffa500; color: #000; box-shadow: 0 0 16px #ffa500; }

    /* ── LEGO Builder ── */
    #lego-section { max-width: 680px; margin: 0 auto 32px; text-align: center; }

    #lego-toggle-btn {
      display: inline-block;
      padding: 10px 28px;
      background: transparent;
      border: 2px solid #f97316;
      color: #f97316;
      border-radius: 30px;
      font-family: 'Orbitron', 'Comfortaa', monospace;
      font-size: 0.88rem;
      cursor: pointer;
      transition: all 0.2s;
      margin-bottom: 16px;
    }
    #lego-toggle-btn:hover { background: #f97316; color: #000; box-shadow: 0 0 16px #f97316; }

    #lego-builder {
      background: rgba(10,0,30,0.92);
      border: 2px solid #f97316;
      border-radius: 20px;
      padding: 22px;
      box-shadow: 0 0 24px #f9731644;
      animation: fadeIn 0.3s ease;
    }

    .lego-label {
      font-family: 'Orbitron', 'Comfortaa', monospace;
      font-size: 0.82rem;
      color: #f97316;
      margin-bottom: 14px;
      letter-spacing: 1px;
    }

    .lego-palette {
      display: flex;
      justify-content: center;
      gap: 8px;
      flex-wrap: wrap;
      margin-bottom: 14px;
    }

    .palette-color {
      width: 38px;
      height: 38px;
      border-radius: 6px;
      cursor: pointer;
      border: 3px solid transparent;
      position: relative;
      transition: transform 0.15s, border-color 0.15s, box-shadow 0.15s;
    }
    .palette-color::after {
      content: '';
      position: absolute;
      top: 50%; left: 50%;
      transform: translate(-50%, -50%);
      width: 50%; height: 50%;
      border-radius: 50%;
      background: rgba(255,255,255,0.25);
      pointer-events: none;
    }
    .palette-color:hover { transform: scale(1.15); }
    .palette-color.selected { border-color: #ffe81f; box-shadow: 0 0 10px #ffe81f; transform: scale(1.2); }

    .lego-grid {
      display: grid;
      grid-template-columns: repeat(10, 1fr);
      gap: 3px;
      margin: 0 auto 14px;
      max-width: 500px;
    }

    .lego-cell {
      aspect-ratio: 1;
      border-radius: 4px;
      border: 1.5px solid rgba(255,255,255,0.1);
      cursor: pointer;
      position: relative;
      background: rgba(255,255,255,0.04);
      transition: transform 0.1s;
    }
    .lego-cell::after {
      content: '';
      position: absolute;
      top: 50%; left: 50%;
      transform: translate(-50%, -50%);
      width: 38%; height: 38%;
      border-radius: 50%;
      background: rgba(255,255,255,0.12);
      pointer-events: none;
    }
    .lego-cell:hover { transform: scale(1.08); border-color: #ffe81f44; }

    .lego-clear-btn {
      padding: 8px 22px;
      background: transparent;
      border: 1.5px solid #f44;
      color: #f44;
      border-radius: 20px;
      font-family: 'Exo 2', 'Comfortaa', sans-serif;
      font-size: 0.85rem;
      cursor: pointer;
      transition: all 0.2s;
    }
    .lego-clear-btn:hover { background: #f44; color: #fff; }

    /* ── Φράση Δύναμης ── */
    .force-quote {
      text-align: center;
      font-family: 'Orbitron', 'Comfortaa', monospace;
      font-size: clamp(0.7rem, 2vw, 0.95rem);
      color: #ffe81f;
      text-shadow: 0 0 10px #ffe81f66;
      margin: 10px 0 6px;
      letter-spacing: 1px;
    }

    /* ── Κουμπί ήχου ── */
    #sound-btn {
      display: block;
      margin: 14px auto 20px;
      padding: 8px 20px;
      background: transparent;
      border: 1.5px solid #9f4;
      color: #9f4;
      border-radius: 20px;
      font-family: 'Exo 2', 'Comfortaa', sans-serif;
      font-size: 0.85rem;
      cursor: pointer;
      transition: all 0.2s;
    }
    #sound-btn:hover { background: #9f4; color: #000; box-shadow: 0 0 12px #9f4; }

    /* ── LEGO Save/Load ── */
    .lego-save-area {
      margin-top: 14px;
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      justify-content: center;
      align-items: center;
    }
    .lego-save-btn {
      padding: 8px 18px;
      background: transparent;
      border: 1.5px solid #ffe81f;
      color: #ffe81f;
      border-radius: 20px;
      font-family: 'Exo 2', 'Comfortaa', sans-serif;
      font-size: 0.85rem;
      cursor: pointer;
      transition: all 0.2s;
    }
    .lego-save-btn:hover { background: #ffe81f; color: #000; box-shadow: 0 0 12px #ffe81f; }
    .lego-load-btn {
      padding: 8px 18px;
      background: transparent;
      border: 1.5px solid #4af;
      color: #4af;
      border-radius: 20px;
      font-family: 'Exo 2', 'Comfortaa', sans-serif;
      font-size: 0.85rem;
      cursor: pointer;
      transition: all 0.2s;
    }
    .lego-load-btn:hover { background: #4af; color: #000; box-shadow: 0 0 12px #4af; }
    .lego-counter {
      font-family: 'Orbitron', 'Comfortaa', monospace;
      font-size: 0.75rem;
      color: #f97316;
      letter-spacing: 1px;
      width: 100%;
      text-align: center;
      margin-top: 4px;
    }
    .lego-save-input-area {
      display: none;
      margin-top: 12px;
      flex-direction: column;
      align-items: center;
      gap: 8px;
    }
    .lego-save-input-area.open { display: flex; }
    .lego-name-input {
      background: rgba(255,255,255,0.07);
      border: 1.5px solid #ffe81f;
      border-radius: 10px;
      color: #fff;
      font-family: 'Exo 2', 'Comfortaa', sans-serif;
      font-size: 0.9rem;
      padding: 8px 14px;
      width: 100%;
      max-width: 320px;
      outline: none;
    }
    .lego-name-input::placeholder { color: #888; }
    .lego-confirm-save-btn {
      padding: 8px 22px;
      background: #ffe81f;
      border: none;
      border-radius: 20px;
      font-family: 'Exo 2', 'Comfortaa', sans-serif;
      font-size: 0.85rem;
      color: #000;
      cursor: pointer;
      font-weight: 600;
      transition: box-shadow 0.2s;
    }
    .lego-confirm-save-btn:hover { box-shadow: 0 0 14px #ffe81f; }
    .lego-load-panel {
      display: none;
      margin-top: 16px;
      background: rgba(0,0,10,0.6);
      border: 1.5px solid #4af;
      border-radius: 14px;
      padding: 16px;
      max-height: 420px;
      overflow-y: auto;
      text-align: left;
    }
    .lego-load-panel.open { display: block; }
    .lego-load-title {
      font-family: 'Orbitron', 'Comfortaa', monospace;
      font-size: 0.8rem;
      color: #4af;
      text-align: center;
      margin-bottom: 12px;
    }
    .lego-save-item {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 10px;
      border-radius: 10px;
      border: 1px solid rgba(68,170,255,0.2);
      margin-bottom: 8px;
      background: rgba(68,170,255,0.04);
    }
    .lego-thumb {
      display: grid;
      grid-template-columns: repeat(10, 4px);
      gap: 0.5px;
      flex-shrink: 0;
    }
    .lego-thumb-cell { width: 4px; height: 4px; border-radius: 0.5px; }
    .lego-save-info { flex: 1; min-width: 0; }
    .lego-save-name {
      font-family: 'Orbitron', 'Comfortaa', monospace;
      font-size: 0.72rem;
      color: #ffe81f;
      margin-bottom: 3px;
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
    }
    .lego-save-date { font-size: 0.7rem; color: #8a8aaa; }
    .lego-load-design-btn {
      padding: 5px 12px;
      background: transparent;
      border: 1.5px solid #4af;
      color: #4af;
      border-radius: 14px;
      font-size: 0.75rem;
      cursor: pointer;
      transition: all 0.15s;
      white-space: nowrap;
    }
    .lego-load-design-btn:hover { background: #4af; color: #000; }
    .lego-delete-btn {
      padding: 5px 10px;
      background: transparent;
      border: 1.5px solid #f44;
      color: #f44;
      border-radius: 14px;
      font-size: 0.8rem;
      cursor: pointer;
      transition: all 0.15s;
    }
    .lego-delete-btn:hover { background: #f44; color: #fff; }
    .lego-empty-msg { text-align: center; color: #8a8aaa; font-size: 0.85rem; padding: 12px; }

    .hidden { display: none !important; }

    /* ── Υποσέλιδο ── */
    /* Χρώμα κειμένου αρκετά φωτεινό ώστε να διαβάζεται εύκολα (αντίθεση ≥ 4.5:1) */
    footer { text-align: center; padding: 20px 10px 30px; font-size: 0.78rem; color: #8a8aaa; }
    footer span { color: #ffe81f; }

    /* ── Προσβασιμότητα ── */
    /* Καθαρό περίγραμμα όταν κάτι έχει «focus» από το πληκτρολόγιο (Tab) */
    .lego-name-input:focus-visible,
    .card:focus-visible,
    .palette-color:focus-visible {
      outline: 3px solid #ffe81f;
      outline-offset: 2px;
    }

    /* Αν ο υπολογιστής ζητά «λιγότερη κίνηση», σταματάμε τα κινούμενα εφέ */
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
      }
    }