/* ===== RESET & BASE ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#0a0a1a;--bg2:#12122a;--bg3:#1a1a3e;
  --surface:rgba(255,255,255,0.05);--surface2:rgba(255,255,255,0.08);
  --border:rgba(255,255,255,0.1);--border2:rgba(255,255,255,0.15);
  --text:#e8e8f0;--text2:#a0a0c0;--text3:#6a6a90;
  --primary:#7c5cfc;--primary2:#9d7eff;--primary-glow:rgba(124,92,252,0.3);
  --secondary:#4ecdc4;--secondary2:#6fe8df;
  --accent:#ff6b9d;--warning:#ffc107;--danger:#ff4757;--success:#2ed573;
  --radius:12px;--radius-lg:20px;--radius-xl:28px;
  --shadow:0 8px 32px rgba(0,0,0,0.4);
  --transition:all 0.3s cubic-bezier(0.4,0,0.2,1);
  --font:'Inter',system-ui,-apple-system,sans-serif;
}
html{font-size:16px;scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);min-height:100vh;overflow-x:hidden}
a{color:var(--primary2);text-decoration:none}
a:hover{color:var(--secondary)}
img{max-width:100%;display:block}
input,button,select{font-family:inherit;font-size:inherit}
.hidden{display:none!important}

/* ===== GLASS ===== */
.glass{background:rgba(255,255,255,0.04);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid var(--border);border-radius:var(--radius-lg)}

/* ===== BUTTONS ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 20px;border:none;border-radius:var(--radius);font-weight:600;cursor:pointer;transition:var(--transition);outline:none;position:relative;overflow:hidden;white-space:nowrap}
.btn:active{transform:scale(0.97)}
.btn-primary{background:linear-gradient(135deg,var(--primary),#6442ef);color:#fff;box-shadow:0 4px 20px var(--primary-glow)}
.btn-primary:hover{box-shadow:0 6px 30px rgba(124,92,252,0.5);transform:translateY(-2px)}
.btn-secondary{background:var(--surface2);color:var(--text);border:1px solid var(--border2)}
.btn-secondary:hover{background:rgba(255,255,255,0.12)}
.btn-ghost{background:transparent;color:var(--text2);border:none}
.btn-ghost:hover{color:var(--text);background:var(--surface)}
.btn-warning{background:linear-gradient(135deg,#f0a500,#e8850a);color:#000}
.btn-danger{background:var(--danger);color:#fff}
.btn-full{width:100%}.btn-lg{padding:14px 28px;font-size:1.05rem}.btn-sm{padding:6px 14px;font-size:0.85rem}

/* ===== INPUTS ===== */
.input-group{margin-bottom:16px;position:relative}
.input-group label{display:block;margin-bottom:6px;font-weight:500;color:var(--text2);font-size:0.9rem}
.input-group input[type="text"],.input-group input[type="password"]{width:100%;padding:12px 16px 12px 44px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);color:var(--text);font-size:1rem;transition:var(--transition)}
.input-group input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-glow)}
.input-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);font-size:1.1rem;pointer-events:none}
.auth-form .input-group .input-icon{top:56%}

/* ===== TOAST ===== */
#toast-container{position:fixed;top:20px;right:20px;z-index:10000;display:flex;flex-direction:column;gap:8px}
.toast{padding:14px 20px;border-radius:var(--radius);color:#fff;font-weight:500;animation:slideInRight 0.4s ease;min-width:280px;box-shadow:var(--shadow);display:flex;align-items:center;gap:10px}
.toast-success{background:linear-gradient(135deg,#2ed573,#17a559)}.toast-error{background:linear-gradient(135deg,#ff4757,#c0392b)}.toast-info{background:linear-gradient(135deg,var(--primary),#6442ef)}
.toast.fade-out{animation:slideOutRight 0.4s ease forwards}
@keyframes slideInRight{from{transform:translateX(120%);opacity:0}to{transform:translateX(0);opacity:1}}
@keyframes slideOutRight{to{transform:translateX(120%);opacity:0}}

/* ===== PAGES ===== */
.page{display:none;min-height:100vh;animation:fadeIn 0.4s ease}
.page.active{display:block}
@keyframes fadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}

/* ===== AUTH ===== */
.auth-bg{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px;background:radial-gradient(ellipse at 30% 20%,rgba(124,92,252,0.15),transparent 60%),radial-gradient(ellipse at 70% 80%,rgba(78,205,196,0.1),transparent 50%),var(--bg)}
.auth-card{width:100%;max-width:420px;padding:40px 32px}
.auth-logo{text-align:center;margin-bottom:32px}
.logo-icon{font-size:3.5rem;display:block;margin-bottom:8px;filter:drop-shadow(0 4px 20px rgba(124,92,252,0.4))}
.auth-logo h1{font-size:2rem;font-weight:800;background:linear-gradient(135deg,var(--primary2),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.auth-subtitle{color:var(--text3);margin-top:4px;font-size:0.95rem}
.auth-form h2{text-align:center;margin-bottom:24px;font-size:1.3rem}
.auth-switch{text-align:center;margin-top:16px;color:var(--text3);font-size:0.9rem}

/* ===== TOP BAR ===== */
.top-bar{display:flex;align-items:center;justify-content:space-between;padding:12px 24px;margin:12px;border-radius:var(--radius-lg);position:sticky;top:12px;z-index:100}
.top-bar-left,.top-bar-right{display:flex;align-items:center;gap:12px}
.logo-icon-sm{font-size:1.5rem}.logo-text{font-weight:700;font-size:1.1rem;background:linear-gradient(135deg,var(--primary2),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.user-profile-btn { display: flex; align-items: center; gap: 8px; background: var(--surface2); padding: 4px 12px 4px 4px; border-radius: 20px; cursor: pointer; transition: var(--transition); border: 1px solid transparent; }
.user-profile-btn:hover { background: var(--surface); border-color: var(--border); }
.header-avatar { width: 28px; height: 28px; border-radius: 50%; object-fit: cover; }
.settings-gear { font-size: 1.1rem; transition: transform 0.3s ease; }
.user-profile-btn:hover .settings-gear { transform: rotate(90deg); }
.user-badge{font-size:0.85rem;color:var(--text);font-weight:600;margin-left:4px}

/* ===== TABS ===== */
.home-content{max-width:1100px;margin:0 auto;padding:20px}
.tab-nav{display:flex;gap:4px;background:var(--surface);border-radius:var(--radius-lg);padding:4px;margin-bottom:24px}
.tab-btn{flex:1;padding:12px;border:none;background:transparent;color:var(--text3);font-weight:600;border-radius:var(--radius);cursor:pointer;transition:var(--transition);font-size:0.95rem}
.tab-btn.active{background:linear-gradient(135deg,var(--primary),#6442ef);color:#fff;box-shadow:0 4px 15px var(--primary-glow)}
.tab-btn:hover:not(.active){color:var(--text);background:var(--surface2)}
.tab-content{display:none;animation:fadeIn 0.3s ease}.tab-content.active{display:block}
.section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.section-header h2{font-size:1.3rem}

/* ===== EMPTY STATE ===== */
.empty-state{text-align:center;padding:60px 20px;color:var(--text3)}
.empty-icon{font-size:3rem;display:block;margin-bottom:12px;opacity:0.5}

/* ===== LOBBIES GRID ===== */
.lobbies-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px}
.lobby-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px;cursor:pointer;transition:var(--transition);position:relative;overflow:hidden}
.lobby-card:hover{border-color:var(--primary);transform:translateY(-3px);box-shadow:0 8px 30px var(--primary-glow)}
.lobby-card-title{font-weight:700;font-size:1.1rem;margin-bottom:8px}
.lobby-card-meta{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}
.badge{display:inline-flex;align-items:center;gap:4px;padding:4px 10px;border-radius:20px;font-size:0.75rem;font-weight:600;background:linear-gradient(135deg,var(--primary),#6442ef);color:#fff}
.badge-outline{background:transparent;border:1px solid var(--border2);color:var(--text2)}
.badge-warning{background:linear-gradient(135deg,#f0a500,#e8850a);color:#000}
.lobby-card-host{font-size:0.85rem;color:var(--text3)}
.lobby-card-players{font-size:0.9rem;color:var(--text2);margin-top:4px}

/* ===== QUIZZES GRID ===== */
.quizzes-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}
.quiz-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:var(--transition)}
.quiz-card:hover{border-color:var(--primary);transform:translateY(-3px);box-shadow:0 8px 30px var(--primary-glow)}
.quiz-card-cover{width:100%;height:160px;object-fit:contain;background:rgba(0,0,0,0.3)}
.quiz-card-body{padding:16px}
.quiz-card-title{font-weight:700;font-size:1.05rem;margin-bottom:4px}
.quiz-card-info{display:flex;flex-direction:column;gap:8px;font-size:0.85rem;color:var(--text3);margin-bottom:12px}
.player-badge { display: inline-flex; align-items: center; gap: 8px; background: var(--surface2); padding: 6px 14px 6px 6px; border-radius: 28px; color: var(--text); font-weight: 500; font-size: 1rem; border: 1px solid var(--border); transition: var(--transition); width: fit-content; max-width: 100%; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.player-badge:hover { background: var(--surface); border-color: var(--primary); }
.player-avatar { width: 30px; height: 30px; min-width: 30px; border-radius: 50%; object-fit: cover; display: flex; align-items: center; justify-content: center; background: var(--surface); font-size: 1.2rem; }
.player-badge .badge-icon { font-size: 1.1rem; margin-left: 4px; }
.quiz-card-actions{display:flex;gap:8px}

/* ===== CREATE QUIZ ===== */
.create-quiz-container{max-width:700px;margin:0 auto}
.create-quiz-container h2{margin-bottom:24px;font-size:1.4rem}
.file-upload-area{position:relative;border:2px dashed var(--border2);border-radius:var(--radius-lg);overflow:hidden;cursor:pointer;transition:var(--transition)}
.file-upload-area:hover{border-color:var(--primary)}
.file-upload-area input[type="file"]{position:absolute;inset:0;opacity:0;cursor:pointer;z-index:2}
.file-upload-placeholder{padding:40px;text-align:center;color:var(--text3)}
.file-upload-placeholder span{font-size:2.5rem;display:block;margin-bottom:8px}
.file-upload-placeholder.has-image{padding:0}
.file-upload-placeholder.has-image img{width:100%;height:200px;object-fit:cover}
.option-count-selector{display:flex;gap:8px}
.count-btn{flex:1;padding:14px;border:2px solid var(--border);background:var(--surface);color:var(--text);border-radius:var(--radius);font-weight:700;font-size:1.2rem;cursor:pointer;transition:var(--transition)}
.count-btn.active{border-color:var(--primary);background:var(--primary-glow);color:var(--primary2)}
.count-btn:hover:not(.active){border-color:var(--text3)}
.options-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px;max-height:500px;overflow-y:auto;padding-right:8px}
.option-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:12px;display:flex;flex-direction:column;gap:8px}
.option-item .option-number{font-size:0.75rem;color:var(--text3);font-weight:600}
.option-item input[type="text"]{width:100%;padding:8px 12px;background:var(--bg2);border:1px solid var(--border);border-radius:8px;color:var(--text);font-size:0.85rem}
.option-item input[type="text"]:focus{outline:none;border-color:var(--primary)}
.option-item .option-file-area{position:relative;height:80px;border:1px dashed var(--border);border-radius:8px;display:flex;align-items:center;justify-content:center;color:var(--text3);font-size:0.8rem;overflow:hidden;cursor:pointer}
.option-item .option-file-area input{position:absolute;inset:0;opacity:0;cursor:pointer;z-index:2}
.option-item .option-file-area img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;z-index:1;pointer-events:none}

/* ===== PROGRESS ===== */
.progress-overlay{position:fixed;inset:0;background:rgba(0,0,0,0.8);display:flex;align-items:center;justify-content:center;z-index:9999}
.progress-card{padding:40px;text-align:center;min-width:350px}
.progress-spinner{width:50px;height:50px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin 0.8s linear infinite;margin:0 auto 20px}
@keyframes spin{to{transform:rotate(360deg)}}
.progress-bar-container{width:100%;height:6px;background:var(--surface2);border-radius:3px;margin-top:16px;overflow:hidden}
.progress-bar{height:100%;background:linear-gradient(90deg,var(--primary),var(--secondary));border-radius:3px;transition:width 0.3s ease;width:0%}
.progress-detail{font-size:0.85rem;color:var(--text3);margin-top:8px;display:block}

/* ===== LOBBY PAGE ===== */
.lobby-content{max-width:600px;margin:0 auto;padding:20px}
.lobby-info{padding:24px;text-align:center;margin-bottom:16px}
.lobby-info h2{margin-bottom:12px}
.lobby-meta{display:flex;gap:8px;justify-content:center}
.lobby-code{background:linear-gradient(135deg,var(--primary),#6442ef);padding:6px 16px;border-radius:20px;font-weight:800;font-size:1.1rem;letter-spacing:2px}
.lobby-players{padding:20px;margin-bottom:16px}
.lobby-players h3{margin-bottom:12px}
.players-list{display:flex;flex-wrap:wrap;gap:8px}
.lobby-players{display:flex;flex-wrap:wrap;gap:8px}
.player-badge.host{border-color:var(--warning);color:var(--warning)}

/* ===== GAME PAGE ===== */
.game-content{width:100%;max-width:1600px;margin:0 auto;padding:20px}
.game-title{text-align:center;margin-bottom:24px;font-size:1.4rem}
.round-badge,.pair-badge{background:var(--surface2);padding:6px 14px;border-radius:20px;font-weight:600;font-size:0.9rem}

/* Voting */
.voting-container{display:flex;gap:16px;align-items:stretch;justify-content:center;position:relative}
.vote-card{flex:1;background:var(--surface);border:2px solid var(--border);border-radius:var(--radius-xl);overflow:hidden;cursor:pointer;transition:var(--transition);display:flex;flex-direction:column;position:relative}
.vote-card:hover{border-color:var(--primary);transform:scale(1.03);box-shadow:0 12px 40px var(--primary-glow)}
.vote-card.voted{border-color:var(--success);box-shadow:0 0 30px rgba(46,213,115,0.3)}
.vote-card.voted::after{content:'✓';position:absolute;top:12px;right:12px;background:var(--success);color:#fff;width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1.1rem;z-index:10;pointer-events:none}
.vote-card > img{width:100%;height:60vh;min-height:300px;object-fit:contain;background:rgba(0,0,0,0.3)}
.vote-card-name{padding:16px;text-align:center;font-weight:700;font-size:1.1rem}
.vs-badge{align-self:center;background:linear-gradient(135deg,var(--accent),#ff4081);color:#fff;width:52px;height:52px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:900;font-size:1rem;flex-shrink:0;box-shadow:0 4px 20px rgba(255,107,157,0.4);z-index:2;position:absolute;left:50%;top:50%;transform:translate(-50%,-50%)}
.vote-waiting{text-align:center;margin-top:20px;color:var(--text2);display:flex;align-items:center;justify-content:center;gap:10px}
.mini-spinner{width:18px;height:18px;border:2px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin 0.6s linear infinite}

/* Results */
.results-container{display:flex;gap:16px;margin-bottom:20px}
.result-card{flex:1;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;position:relative}
.result-card.winner{border-color:var(--success);box-shadow:0 0 25px rgba(46,213,115,0.2)}
.result-card.loser{opacity:0.6}
.result-card > img{width:100%;height:40vh;min-height:250px;object-fit:contain;background:rgba(0,0,0,0.3)}
.result-info{padding:16px}
.result-name{font-weight:700;font-size:1.05rem;margin-bottom:4px}
.result-votes{color:var(--text2);font-size:0.9rem;margin-bottom:8px}
.result-voters{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px;min-height:28px}

.result-bar-wrap{padding:0 16px 16px}
.result-bar{height:6px;border-radius:3px;background:linear-gradient(90deg,var(--primary),var(--secondary));transition:width 0.8s ease}

/* Tie */
.tie-section{text-align:center;padding:20px;margin-bottom:16px}
.tie-section p{font-size:1.2rem;font-weight:700;margin-bottom:12px;color:var(--warning)}

/* ===== COIN FLIP ===== */
.coin-overlay{position:fixed;inset:0;background:rgba(0,0,0,0.85);display:flex;flex-direction:column;align-items:center;justify-content:center;z-index:9999}
.coin-container{perspective:600px;margin-bottom:30px}
.coin{width:120px;height:120px;position:relative;transform-style:preserve-3d;animation:none}
.coin.flipping{animation:coinFlip 2s ease-in-out forwards}
.coin-face{position:absolute;inset:0;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:900;font-size:2rem;backface-visibility:hidden}
.coin-front{background:linear-gradient(135deg,var(--primary),#9d7eff);color:#fff;border:4px solid rgba(255,255,255,0.3)}
.coin-back{background:linear-gradient(135deg,var(--secondary),#3dbeb6);color:#fff;border:4px solid rgba(255,255,255,0.3);transform:rotateY(180deg)}
@keyframes coinFlip{0%{transform:rotateY(0)}25%{transform:rotateY(900deg)}50%{transform:rotateY(1440deg)}100%{transform:rotateY(1800deg)}}
@keyframes coinFlipB{0%{transform:rotateY(0)}25%{transform:rotateY(900deg)}50%{transform:rotateY(1440deg)}100%{transform:rotateY(1980deg)}}
.coin-result{font-size:1.5rem;color:var(--success);animation:fadeIn 0.5s ease}

/* ===== CHAMPION ===== */
.champion-overlay{position:fixed;inset:0;background:radial-gradient(circle at center,rgba(124,92,252,0.2),rgba(0,0,0,0.95));display:flex;align-items:center;justify-content:center;z-index:9999}
.champion-content{text-align:center;animation:scaleIn 0.6s cubic-bezier(0.34,1.56,0.64,1)}
@keyframes scaleIn{from{transform:scale(0.5);opacity:0}to{transform:scale(1);opacity:1}}
.champion-title{font-size:2.5rem;margin-bottom:24px;background:linear-gradient(135deg,#ffd700,#ffaa00);-webkit-background-clip:text;-webkit-text-fill-color:transparent;filter:drop-shadow(0 4px 20px rgba(255,215,0,0.4))}
.champion-card{background:var(--surface);border:2px solid #ffd700;border-radius:var(--radius-xl);overflow:hidden;width:100%;max-width:600px;margin:0 auto 24px;box-shadow:0 0 60px rgba(255,215,0,0.2)}
.champion-card img{width:100%;height:50vh;min-height:300px;object-fit:contain;background:rgba(0,0,0,0.3)}
.champion-card h2{padding:20px;font-size:1.3rem}

/* ===== MODAL ===== */
.modal{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;z-index:9998}
.modal-backdrop{position:absolute;inset:0;background:rgba(0,0,0,0.7)}
.modal-card{position:relative;padding:28px;min-width:340px;max-width:420px;width:90%}
.modal-card h3{margin-bottom:20px;font-size:1.2rem}
.modal-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:20px}
.mode-selector{display:flex;gap:8px}
.mode-btn{flex:1;padding:12px;border:2px solid var(--border);background:var(--surface);color:var(--text);border-radius:var(--radius);font-weight:600;cursor:pointer;transition:var(--transition);font-size:0.9rem}
.mode-btn.active{border-color:var(--primary);background:var(--primary-glow);color:var(--primary2)}

/* ===== CONFETTI ===== */
.confetti-container{position:fixed;inset:0;pointer-events:none;overflow:hidden;z-index:-1}
.confetti-piece{position:absolute;width:10px;height:10px;top:-10px;animation:confettiFall linear forwards}
@keyframes confettiFall{to{top:110vh;transform:rotateZ(720deg)}}

/* ===== CHANGELOG ===== */
.changelog-list { display: flex; flex-direction: column; gap: 16px; max-width: 800px; margin: 0 auto; }
.changelog-item { padding: 24px; border-radius: var(--radius-lg); position: relative; }
.changelog-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.changelog-date { color: var(--text3); font-size: 0.9rem; font-weight: 500; }
.changelog-title { font-size: 1.2rem; margin-bottom: 12px; color: var(--primary2); }
.changelog-body { padding-left: 20px; color: var(--text2); line-height: 1.6; }
.changelog-body li { margin-bottom: 6px; }

.changelog-add-card { max-width: 800px; margin: 0 auto 24px; padding: 24px; }
.changelog-add-card h3 { margin-bottom: 20px; font-size: 1.2rem; }
.cl-form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.cl-form-actions { display: flex; justify-content: flex-end; gap: 12px; margin-top: 20px; }
.cl-admin-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 16px; border-top: 1px solid var(--border); padding-top: 12px; }

textarea { width: 100%; padding: 12px 16px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); color: var(--text); font-size: 1rem; transition: var(--transition); resize: vertical; font-family: inherit; }
textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-glow); }

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border2);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text3)}

/* ===== RESPONSIVE ===== */
@media(max-width:768px){
  .voting-container{flex-direction:column;align-items:stretch}
  .vote-card{width:100%}.vote-card img{height:40vh;min-height:200px}
  .vs-badge{position:static;transform:none;margin:-10px 0}
  .results-container{flex-direction:column}
  .tab-nav{flex-wrap:wrap}.tab-btn{font-size:0.85rem;padding:10px}
  .top-bar{margin:8px;padding:10px 16px}
  .auth-card{padding:24px 20px}
  .options-grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr))}
  .lobbies-grid,.quizzes-grid{grid-template-columns:1fr}
}
@media(max-width:480px){
  .vote-card img{height:35vh;min-height:160px}
  .champion-card img{height:40vh;min-height:220px}
  .options-grid{grid-template-columns:1fr}
}