/* ============================================================
   DedoplistskaroN1School — Global Design System
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+Georgian:wght@300;400;500;600;700;900&family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
  --color-primary:#c0392b; --color-primary-dark:#a93226; --color-accent:#f39c12;
  --bg-base:#f4f6fb; --bg-surface:#ffffff; --bg-surface2:#eef1f8;
  --bg-overlay:rgba(255,255,255,0.85);
  --text-primary:#1a1d2e; --text-secondary:#5a6072; --text-muted:#9299ad;
  --border:#e2e6f0; --border-focus:#c0392b;
  --shadow-sm:0 1px 3px rgba(0,0,0,.08); --shadow-md:0 4px 16px rgba(0,0,0,.10);
  --shadow-lg:0 8px 32px rgba(0,0,0,.14); --shadow-xl:0 16px 48px rgba(0,0,0,.18);
  --radius-sm:8px; --radius-md:14px; --radius-lg:22px; --radius-full:9999px;
  --space-1:4px; --space-2:8px; --space-3:12px; --space-4:16px; --space-5:20px;
  --space-6:24px; --space-8:32px; --space-10:40px; --space-12:48px; --space-16:64px;
  --transition:.25s cubic-bezier(.4,0,.2,1); --transition-slow:.5s cubic-bezier(.4,0,.2,1);
  --font-main:'Inter','Noto Sans Georgian',sans-serif;
  --nav-height:68px; --chat-sidebar:280px;
}
[data-theme="dark"] {
  --bg-base:#10121c; --bg-surface:#191c2e; --bg-surface2:#1e2236;
  --bg-overlay:rgba(25,28,46,.88);
  --text-primary:#e8eaf0; --text-secondary:#9299ad; --text-muted:#5a6072;
  --border:#2a2e45; --border-focus:#e74c3c;
  --shadow-sm:0 1px 3px rgba(0,0,0,.4); --shadow-md:0 4px 16px rgba(0,0,0,.5);
  --shadow-lg:0 8px 32px rgba(0,0,0,.6); --shadow-xl:0 16px 48px rgba(0,0,0,.7);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-main);background:var(--bg-base);color:var(--text-primary);min-height:100vh;transition:background var(--transition),color var(--transition);overflow-x:hidden}
a{color:inherit;text-decoration:none} img{max-width:100%;display:block} ul{list-style:none}
button{cursor:pointer;border:none;background:none;font-family:inherit}
input,textarea,select{font-family:inherit}
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-thumb{background:var(--color-primary);border-radius:var(--radius-full)}
::-webkit-scrollbar-track{background:transparent}

/* NAVBAR */
.navbar{position:fixed;top:0;left:0;right:0;height:var(--nav-height);display:flex;align-items:center;padding:0 var(--space-6);gap:var(--space-5);background:var(--bg-overlay);backdrop-filter:blur(20px) saturate(1.6);-webkit-backdrop-filter:blur(20px) saturate(1.6);border-bottom:1px solid var(--border);z-index:1000;transition:background var(--transition)}
.navbar-brand{display:flex;align-items:center;gap:var(--space-3);font-weight:800;font-size:17px;color:var(--color-primary);flex-shrink:0}
.brand-logo{width:38px;height:38px;background:linear-gradient(135deg,var(--color-primary),var(--color-accent));border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:18px;color:#fff;font-weight:900;flex-shrink:0}
.navbar-nav{display:flex;align-items:center;gap:var(--space-1);flex:1}
.nav-link{padding:var(--space-2) var(--space-4);border-radius:var(--radius-sm);font-size:14px;font-weight:500;color:var(--text-secondary);transition:color var(--transition),background var(--transition);white-space:nowrap}
.nav-link:hover,.nav-link.active{color:var(--color-primary);background:rgba(192,57,43,.08)}
.nav-link.active{font-weight:600}
.navbar-controls{display:flex;align-items:center;gap:var(--space-2);flex-shrink:0}
.icon-btn{width:36px;height:36px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);color:var(--text-secondary);transition:color var(--transition),background var(--transition);font-size:18px}
.icon-btn:hover,.icon-btn.active{color:var(--color-primary);background:rgba(192,57,43,.1)}
.lang-select{appearance:none;background:var(--bg-surface2);border:1px solid var(--border);color:var(--text-primary);padding:6px 28px 6px 10px;border-radius:var(--radius-sm);font-size:13px;font-weight:500;cursor:pointer;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%239299ad' d='M6 8L1 3h10z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 8px center;transition:border-color var(--transition)}
.lang-select:focus{outline:none;border-color:var(--border-focus)}
.menu-toggle{display:none;width:36px;height:36px;flex-direction:column;justify-content:center;align-items:center;gap:5px;border-radius:var(--radius-sm);cursor:pointer}
.menu-toggle span{width:22px;height:2px;background:var(--text-primary);border-radius:2px;transition:transform var(--transition),opacity var(--transition)}
.menu-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle.open span:nth-child(2){opacity:0}
.menu-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.ui-badge{padding:4px 10px;border-radius:var(--radius-full);font-size:11px;font-weight:700;background:linear-gradient(135deg,var(--color-primary),var(--color-accent));color:#fff;letter-spacing:.5px;cursor:pointer;transition:opacity var(--transition),transform var(--transition)}
.ui-badge:hover{opacity:.85;transform:scale(1.05)}

/* LAYOUT */
.page-wrapper{padding-top:calc(var(--nav-height) + var(--space-8));min-height:100vh}
.container{max-width:1200px;margin:0 auto;padding:0 var(--space-6)}
.container-sm{max-width:800px;margin:0 auto;padding:0 var(--space-6)}
.section{padding:var(--space-12) 0}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--space-6)}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-6)}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--space-6)}
.grid-auto{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:var(--space-6)}
.flex-between{display:flex;align-items:center;justify-content:space-between}
.flex-center{display:flex;align-items:center;justify-content:center}

/* TYPOGRAPHY */
.page-title{font-size:clamp(28px,5vw,48px);font-weight:800;line-height:1.15;letter-spacing:-.5px}
.section-title{font-size:clamp(20px,3vw,30px);font-weight:700;margin-bottom:var(--space-6)}
.card-title{font-size:17px;font-weight:700;line-height:1.3}
.label{font-size:12px;font-weight:600;letter-spacing:.8px;text-transform:uppercase;color:var(--text-muted)}
.gradient-text{background:linear-gradient(135deg,var(--color-primary),var(--color-accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}

/* CARDS */
.card{background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-md);padding:var(--space-6);box-shadow:var(--shadow-sm);transition:box-shadow var(--transition),transform var(--transition),border-color var(--transition)}
.card:hover{box-shadow:var(--shadow-md)}
[data-ui="advanced"] .card{background:linear-gradient(145deg,var(--bg-overlay),var(--bg-surface));backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.18)}
[data-theme="dark"][data-ui="advanced"] .card{background:linear-gradient(145deg,rgba(30,34,54,.9),rgba(25,28,46,.95));border:1px solid rgba(255,255,255,.08)}
[data-ui="advanced"] .card-hover:hover{transform:translateY(-4px) scale(1.01);box-shadow:var(--shadow-lg)}
.card-media{border-radius:var(--radius-sm);overflow:hidden;margin-bottom:var(--space-4);height:180px}
.card-media-inner{width:100%;height:100%;object-fit:cover;transition:transform var(--transition-slow)}
.card:hover .card-media-inner{transform:scale(1.05)}

/* BUTTONS */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);padding:10px 20px;border-radius:var(--radius-sm);font-size:14px;font-weight:600;transition:all var(--transition);cursor:pointer;border:none;outline:none;white-space:nowrap}
.btn:focus-visible{outline:2px solid var(--border-focus);outline-offset:2px}
.btn-primary{background:linear-gradient(135deg,var(--color-primary),var(--color-primary-dark));color:#fff;box-shadow:0 2px 8px rgba(192,57,43,.3)}
.btn-primary:hover{box-shadow:0 4px 16px rgba(192,57,43,.4);transform:translateY(-1px)}
.btn-accent{background:linear-gradient(135deg,var(--color-accent),#e67e22);color:#fff;box-shadow:0 2px 8px rgba(243,156,18,.3)}
.btn-accent:hover{box-shadow:0 4px 16px rgba(243,156,18,.4);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--text-primary);border:1.5px solid var(--border)}
.btn-ghost:hover{background:var(--bg-surface2);border-color:var(--color-primary);color:var(--color-primary)}
.btn-sm{padding:7px 14px;font-size:13px}
.btn-lg{padding:14px 28px;font-size:16px;border-radius:var(--radius-md)}
.btn-full{width:100%}
.btn-hero-outline{background:rgba(255,255,255,.12);border:1.5px solid rgba(255,255,255,.35);color:#fff;padding:14px 28px;font-size:16px;border-radius:var(--radius-md);display:inline-flex;align-items:center;gap:var(--space-2);font-weight:600;cursor:pointer;transition:all var(--transition)}
.btn-hero-outline:hover{background:rgba(255,255,255,.22);transform:translateY(-1px)}

/* FORMS */
.form-group{display:flex;flex-direction:column;gap:var(--space-2)}
.form-label{font-size:13px;font-weight:600;color:var(--text-secondary)}
.form-input,.form-textarea,.form-select{background:var(--bg-surface2);border:1.5px solid var(--border);border-radius:var(--radius-sm);padding:10px 14px;color:var(--text-primary);font-size:14px;transition:border-color var(--transition),box-shadow var(--transition);width:100%}
.form-input:focus,.form-textarea:focus,.form-select:focus{outline:none;border-color:var(--border-focus);box-shadow:0 0 0 3px rgba(192,57,43,.12);background:var(--bg-surface)}
.form-textarea{resize:vertical;min-height:100px}

/* BADGES */
.badge{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;border-radius:var(--radius-full);font-size:12px;font-weight:600}
.badge-primary{background:rgba(192,57,43,.12);color:var(--color-primary)}
.badge-accent{background:rgba(243,156,18,.15);color:#d68910}
.badge-muted{background:var(--bg-surface2);color:var(--text-muted)}
.badge-success{background:rgba(39,174,96,.12);color:#27ae60}
.badge-info{background:rgba(52,152,219,.12);color:#2980b9}

/* HERO */
.hero{position:relative;background:linear-gradient(135deg,#c0392b 0%,#922b21 40%,#1a1d2e 100%);color:#fff;padding:var(--space-16) 0 calc(var(--space-16) + var(--space-8));overflow:hidden}
.hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at 70% 50%,rgba(243,156,18,.15) 0%,transparent 60%),radial-gradient(ellipse at 30% 80%,rgba(192,57,43,.3) 0%,transparent 50%)}
.hero-blob{position:absolute;border-radius:50%;opacity:.08;pointer-events:none;animation:blobFloat 8s ease-in-out infinite}
.hero-blob-1{width:500px;height:500px;background:radial-gradient(circle,#fff,transparent);top:-100px;right:-100px}
.hero-blob-2{width:300px;height:300px;background:radial-gradient(circle,var(--color-accent),transparent);bottom:-80px;left:10%;animation-delay:-3s}
@keyframes blobFloat{0%,100%{transform:translate(0,0) scale(1)}33%{transform:translate(20px,-30px) scale(1.05)}66%{transform:translate(-15px,15px) scale(.95)}}
.hero-content{position:relative;z-index:1}
.hero-tagline{display:inline-flex;align-items:center;gap:var(--space-2);background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);padding:6px 14px;border-radius:var(--radius-full);font-size:13px;font-weight:500;margin-bottom:var(--space-5);backdrop-filter:blur(8px)}
.hero h1{font-size:clamp(32px,6vw,64px);font-weight:900;line-height:1.1;margin-bottom:var(--space-5);letter-spacing:-1px}
.hero .subtitle{font-size:clamp(14px,2vw,18px);opacity:.85;max-width:520px;line-height:1.7;margin-bottom:var(--space-8)}
.hero-actions{display:flex;gap:var(--space-4);flex-wrap:wrap}
.hero-stats{display:flex;gap:var(--space-5);flex-wrap:wrap;margin-top:var(--space-10)}
.hero-stat{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.15);backdrop-filter:blur(12px);border-radius:var(--radius-md);padding:var(--space-4) var(--space-5);min-width:110px}
.hero-stat-num{font-size:26px;font-weight:800}
.hero-stat-label{font-size:12px;opacity:.75;margin-top:2px}

/* FEATURE CARDS */
.feature-card{text-align:center;padding:var(--space-8) var(--space-6);cursor:pointer}
.feature-card .icon-wrap{width:64px;height:64px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:28px;margin:0 auto var(--space-4);transition:transform var(--transition)}
.feature-card:hover .icon-wrap{transform:scale(1.1) rotate(-5deg)}

/* NEWS PAGE */
.news-toolbar{display:flex;align-items:center;gap:var(--space-4);flex-wrap:wrap;margin-bottom:var(--space-8)}
.search-wrap{position:relative;flex:1;min-width:200px}
.search-wrap .search-icon{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--text-muted);pointer-events:none;font-size:16px}
.search-wrap .form-input{padding-left:38px}
.category-pills{display:flex;flex-wrap:wrap;gap:var(--space-2)}
.pill{padding:6px 16px;border-radius:var(--radius-full);font-size:13px;font-weight:600;background:var(--bg-surface2);border:1.5px solid var(--border);color:var(--text-secondary);cursor:pointer;transition:all var(--transition)}
.pill.active,.pill:hover{background:var(--color-primary);color:#fff;border-color:var(--color-primary)}
.news-card{display:flex;flex-direction:column;height:100%}
.news-card-body{flex:1}
.news-card-meta{display:flex;align-items:center;gap:var(--space-3);margin:var(--space-3) 0;font-size:12px;color:var(--text-muted)}
.news-card-excerpt{font-size:14px;color:var(--text-secondary);line-height:1.65}
.news-card-footer{margin-top:var(--space-4);padding-top:var(--space-4);border-top:1px solid var(--border)}
.news-placeholder-img{width:100%;height:100%;display:flex;align-items:center;justify-content:center;font-size:48px}
.modal-overlay{position:fixed;inset:0;background:rgba(10,10,20,.65);backdrop-filter:blur(8px);z-index:2000;display:flex;align-items:center;justify-content:center;padding:var(--space-6);opacity:0;pointer-events:none;transition:opacity var(--transition)}
.modal-overlay.open{opacity:1;pointer-events:all}
.modal{background:var(--bg-surface);border-radius:var(--radius-lg);max-width:640px;width:100%;max-height:85vh;overflow-y:auto;padding:var(--space-8);box-shadow:var(--shadow-xl);transform:translateY(20px);transition:transform var(--transition)}
.modal-overlay.open .modal{transform:translateY(0)}

/* CHAT PAGE */
.chat-layout{display:flex;height:calc(100vh - var(--nav-height));overflow:hidden}
.chat-sidebar{width:var(--chat-sidebar);border-right:1px solid var(--border);background:var(--bg-surface);display:flex;flex-direction:column;flex-shrink:0}
.chat-sidebar-header{padding:var(--space-5) var(--space-4);border-bottom:1px solid var(--border)}
.chat-sidebar-title{font-size:16px;font-weight:700}
.chat-room-list{flex:1;overflow-y:auto;padding:var(--space-2)}
.chat-room-item{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-3);border-radius:var(--radius-sm);cursor:pointer;transition:background var(--transition);position:relative}
.chat-room-item:hover{background:var(--bg-surface2)}
.chat-room-item.active{background:rgba(192,57,43,.1)}
.chat-room-item.active .chat-room-name{color:var(--color-primary);font-weight:600}
.chat-room-avatar{width:40px;height:40px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;color:#fff;flex-shrink:0}
.chat-room-name{font-size:14px;font-weight:500}
.chat-room-sub{font-size:12px;color:var(--text-muted)}
.chat-main{flex:1;display:flex;flex-direction:column;min-width:0;background:var(--bg-base)}
.chat-topbar{padding:0 var(--space-5);height:64px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border);background:var(--bg-surface)}
.chat-topbar-info{display:flex;align-items:center;gap:var(--space-3)}
.chat-topbar-name{font-size:15px;font-weight:700}
.chat-topbar-status{font-size:12px;color:#27ae60}
.chat-messages{flex:1;overflow-y:auto;padding:var(--space-6);display:flex;flex-direction:column;gap:var(--space-4)}
.chat-day-label{text-align:center;font-size:12px;font-weight:600;color:var(--text-muted);padding:var(--space-2) var(--space-4);background:var(--bg-surface2);border-radius:var(--radius-full);align-self:center}
.msg-group{display:flex;gap:var(--space-3);align-items:flex-end}
.msg-group.mine{flex-direction:row-reverse}
.msg-avatar{width:32px;height:32px;flex-shrink:0;border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;color:#fff}
.msg-bubbles{display:flex;flex-direction:column;gap:3px;max-width:70%}
.msg-group.mine .msg-bubbles{align-items:flex-end}
.msg-sender{font-size:12px;color:var(--text-muted);margin-bottom:3px;font-weight:600}
.msg-bubble{padding:10px 14px;border-radius:18px 18px 18px 4px;background:var(--bg-surface);font-size:14px;line-height:1.55;box-shadow:var(--shadow-sm);color:var(--text-primary);word-break:break-word;border:1px solid var(--border)}
.msg-group.mine .msg-bubble{background:linear-gradient(135deg,var(--color-primary),var(--color-primary-dark));color:#fff;border:none;border-radius:18px 18px 4px 18px;box-shadow:0 2px 8px rgba(192,57,43,.25)}
.msg-time{font-size:11px;color:var(--text-muted);padding:0 4px}
.msg-group.mine .msg-time{text-align:right}
.typing-indicator{display:flex;align-items:center;gap:4px;padding:8px 14px}
.typing-dot{width:8px;height:8px;border-radius:50%;background:var(--text-muted);animation:typingPulse 1.2s ease-in-out infinite}
.typing-dot:nth-child(2){animation-delay:.2s}.typing-dot:nth-child(3){animation-delay:.4s}
@keyframes typingPulse{0%,60%,100%{transform:translateY(0);opacity:.4}30%{transform:translateY(-6px);opacity:1}}
.chat-inputbar{padding:var(--space-4) var(--space-5);border-top:1px solid var(--border);background:var(--bg-surface)}
.chat-input-row{display:flex;align-items:flex-end;gap:var(--space-3);background:var(--bg-surface2);border:1.5px solid var(--border);border-radius:var(--radius-lg);padding:var(--space-2) var(--space-4);transition:border-color var(--transition)}
.chat-input-row:focus-within{border-color:var(--border-focus)}
.chat-input{flex:1;background:none;border:none;outline:none;color:var(--text-primary);font-size:14px;padding:var(--space-2) 0;resize:none;max-height:120px;min-height:36px;line-height:1.5}
.chat-send-btn{width:38px;height:38px;background:linear-gradient(135deg,var(--color-primary),var(--color-primary-dark));color:#fff;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:16px;flex-shrink:0;transition:all var(--transition)}
.chat-send-btn:hover{transform:scale(1.05);box-shadow:0 2px 8px rgba(192,57,43,.3)}
.chat-login{flex:1;display:flex;align-items:center;justify-content:center;padding:var(--space-8)}
.chat-login-card{max-width:400px;width:100%;text-align:center}
.chat-login-icon{font-size:64px;margin-bottom:var(--space-4)}

/* QUIZ PAGE */
.subject-card{text-align:center;cursor:pointer;padding:var(--space-8)}
.subject-card .subject-icon{font-size:48px;margin-bottom:var(--space-4)}
.subject-card .subject-name{font-size:18px;font-weight:700;margin-bottom:var(--space-2)}
.subject-card .subject-count{font-size:13px;color:var(--text-muted)}
.quiz-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-6)}
.quiz-progress-bar-wrap{flex:1;height:6px;background:var(--bg-surface2);border-radius:var(--radius-full);overflow:hidden;margin:0 var(--space-4)}
.quiz-progress-bar{height:100%;background:linear-gradient(90deg,var(--color-primary),var(--color-accent));border-radius:var(--radius-full);transition:width var(--transition-slow)}
.quiz-counter{font-size:13px;font-weight:600;color:var(--text-muted);white-space:nowrap}
.timer-badge{display:flex;align-items:center;gap:var(--space-2);padding:8px 16px;border-radius:var(--radius-full);background:var(--bg-surface2);border:1.5px solid var(--border);font-size:15px;font-weight:700;min-width:70px;justify-content:center;transition:background var(--transition),color var(--transition)}
.timer-badge.warning{background:rgba(243,156,18,.15);color:#d68910;border-color:var(--color-accent)}
.timer-badge.danger{background:rgba(231,76,60,.15);color:var(--color-primary);border-color:var(--color-primary);animation:timerPulse .5s infinite alternate}
@keyframes timerPulse{from{transform:scale(1)}to{transform:scale(1.05)}}
.question-card{padding:var(--space-8)}
.question-text{font-size:20px;font-weight:700;line-height:1.45;margin-bottom:var(--space-8)}
.options-list{display:flex;flex-direction:column;gap:var(--space-3)}
.option-item{display:flex;align-items:center;gap:var(--space-4);padding:var(--space-4) var(--space-5);border:2px solid var(--border);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition);font-size:15px;font-weight:500;background:var(--bg-surface2)}
.option-item:hover{border-color:var(--color-primary);background:rgba(192,57,43,.06);color:var(--color-primary);transform:translateX(4px)}
.option-item.selected{border-color:var(--color-primary);background:rgba(192,57,43,.1);color:var(--color-primary)}
.option-item.correct{border-color:#00C851;background:#00C851;color:#fff;box-shadow:0 4px 16px rgba(0,200,81,0.5)}
.option-item.wrong{border-color:#ff4444;background:#ff4444;color:#fff;box-shadow:0 4px 16px rgba(255,68,68,0.5)}
.option-item.disabled{cursor:not-allowed}
.option-letter{width:30px;height:30px;border-radius:var(--radius-sm);background:var(--bg-surface);border:1.5px solid var(--border);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;flex-shrink:0;transition:all var(--transition)}
.option-item.selected .option-letter{background:var(--color-primary);color:#fff;border-color:var(--color-primary)}
.option-item.correct .option-letter{background:rgba(255,255,255,0.25);color:#fff;border-color:rgba(255,255,255,0.4)}
.option-item.wrong .option-letter{background:rgba(255,255,255,0.25);color:#fff;border-color:rgba(255,255,255,0.4)}
.result-screen{text-align:center;padding:var(--space-12) var(--space-8);max-width:560px;margin:0 auto}
.result-emoji{font-size:80px;margin-bottom:var(--space-4);animation:resultBounce .5s ease-out}
@keyframes resultBounce{0%{transform:scale(0)}60%{transform:scale(1.1)}100%{transform:scale(1)}}
.result-score-ring{width:140px;height:140px;border-radius:50%;background:conic-gradient(var(--color-primary) var(--score-angle,0deg),var(--bg-surface2) 0);display:flex;align-items:center;justify-content:center;margin:0 auto var(--space-6);box-shadow:var(--shadow-md)}
.result-score-inner{width:110px;height:110px;border-radius:50%;background:var(--bg-surface);display:flex;flex-direction:column;align-items:center;justify-content:center}
.result-score-num{font-size:36px;font-weight:900}
.result-score-total{font-size:14px;color:var(--text-muted)}
.leaderboard-item{display:flex;align-items:center;gap:var(--space-4);padding:var(--space-4) var(--space-5)}
.leaderboard-rank{font-weight:800;font-size:18px;min-width:28px}

/* ABOUT */
.info-item{display:flex;gap:var(--space-4);align-items:flex-start}
.info-icon{width:44px;height:44px;border-radius:var(--radius-sm);background:rgba(192,57,43,.1);color:var(--color-primary);display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}

/* FOOTER */
.footer{background:var(--bg-surface);border-top:1px solid var(--border);padding:var(--space-12) 0 var(--space-8)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:var(--space-8);margin-bottom:var(--space-10)}
.footer-brand{font-size:18px;font-weight:800;color:var(--color-primary);margin-bottom:var(--space-4)}
.footer-desc{font-size:14px;color:var(--text-muted);line-height:1.7}
.footer-title{font-size:13px;font-weight:700;margin-bottom:var(--space-4)}
.footer-links{display:flex;flex-direction:column;gap:var(--space-2)}
.footer-link{font-size:14px;color:var(--text-muted);transition:color var(--transition)}
.footer-link:hover{color:var(--color-primary)}
.footer-bottom{border-top:1px solid var(--border);padding-top:var(--space-6);display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:var(--space-4);font-size:13px;color:var(--text-muted)}

/* TOAST */
.toast-container{position:fixed;bottom:var(--space-6);right:var(--space-6);z-index:9999;display:flex;flex-direction:column;gap:var(--space-3);pointer-events:none}
.toast{background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-md);padding:var(--space-4) var(--space-5);font-size:14px;font-weight:500;box-shadow:var(--shadow-lg);display:flex;align-items:center;gap:var(--space-3);min-width:260px;max-width:360px;animation:toastIn .3s ease-out;pointer-events:all}
.toast.success{border-left:3px solid #27ae60}
.toast.error{border-left:3px solid var(--color-primary)}
.toast.info{border-left:3px solid #3498db}
@keyframes toastIn{from{transform:translateX(120%);opacity:0}to{transform:translateX(0);opacity:1}}
@keyframes toastOut{to{transform:translateX(120%);opacity:0}}

/* SPINNER/EMPTY */
.empty-state{text-align:center;padding:var(--space-16) var(--space-8);color:var(--text-muted)}
.empty-icon{font-size:64px;margin-bottom:var(--space-4)}
.spinner{width:36px;height:36px;border:3px solid var(--border);border-top-color:var(--color-primary);border-radius:50%;animation:spin .8s linear infinite;margin:0 auto}
@keyframes spin{to{transform:rotate(360deg)}}

/* ADVANCED UI EXTRAS */
[data-ui="advanced"] .navbar{box-shadow:0 1px 0 var(--border),0 4px 32px rgba(0,0,0,.06)}
[data-ui="advanced"] .feature-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-xl)}
[data-ui="advanced"] .btn:hover{transform:translateY(-2px) scale(1.02)}
[data-ui="advanced"] .page-wrapper{animation:pageIn .4s ease-out}
@keyframes pageIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
[data-ui="advanced"] .stagger-item{animation:slideUp .4s ease-out both}
[data-ui="advanced"] .stagger-item:nth-child(1){animation-delay:.05s}
[data-ui="advanced"] .stagger-item:nth-child(2){animation-delay:.10s}
[data-ui="advanced"] .stagger-item:nth-child(3){animation-delay:.15s}
[data-ui="advanced"] .stagger-item:nth-child(4){animation-delay:.20s}
[data-ui="advanced"] .stagger-item:nth-child(5){animation-delay:.25s}
[data-ui="advanced"] .stagger-item:nth-child(6){animation-delay:.30s}
@keyframes slideUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:none}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes scaleIn{from{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}
.animate-fade{animation:fadeIn .4s ease-out}
.animate-up{animation:slideUp .4s ease-out}
.animate-scale{animation:scaleIn .3s ease-out}

/* RESPONSIVE */
@media(max-width:900px){.footer-grid{grid-template-columns:1fr 1fr}.grid-3{grid-template-columns:repeat(2,1fr)}.grid-4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:720px){.navbar-nav{display:none}.menu-toggle{display:flex}.navbar-nav.mobile-open{display:flex;flex-direction:column;align-items:stretch;position:fixed;top:var(--nav-height);left:0;right:0;background:var(--bg-surface);padding:var(--space-4);gap:var(--space-2);border-bottom:1px solid var(--border);z-index:999;box-shadow:var(--shadow-lg)}.navbar-nav.mobile-open .nav-link{font-size:16px;text-align:center;padding:12px;background:var(--bg-surface2);border-radius:var(--radius-sm);border:1px solid var(--border)}.navbar-nav.mobile-open .nav-link.active{background:rgba(192,57,43,.1);color:var(--color-primary);border-color:var(--color-primary)}.grid-2{grid-template-columns:1fr}.grid-3{grid-template-columns:1fr}.grid-4{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr}.hero h1{font-size:32px}.chat-sidebar{width:220px}.chat-messages{padding:var(--space-4)}}
@media(max-width:480px){.grid-4{grid-template-columns:1fr}.chat-layout{flex-direction:column}.chat-sidebar{width:100%;height:auto;border-right:none;border-bottom:1px solid var(--border)}.chat-room-list{flex-direction:row;padding:var(--space-2);overflow-x:auto;display:flex}.chat-room-item{flex-direction:column;text-align:center;min-width:80px;padding:var(--space-2)}.chat-room-sub{display:none}.chat-sidebar-header{display:none}}

/* UTILITIES */
.text-muted{color:var(--text-muted)}.text-secondary{color:var(--text-secondary)}.text-primary-c{color:var(--color-primary)}.text-accent{color:var(--color-accent)}.text-center{text-align:center}.mt-auto{margin-top:auto}.mb-4{margin-bottom:var(--space-4)}.mb-6{margin-bottom:var(--space-6)}.mb-8{margin-bottom:var(--space-8)}.mt-4{margin-top:var(--space-4)}.mt-6{margin-top:var(--space-6)}.mt-8{margin-top:var(--space-8)}.p-6{padding:var(--space-6)}.hidden{display:none!important}.divider{height:1px;background:var(--border);margin:var(--space-6) 0}.bold{font-weight:700}.w-full{width:100%}.gap-2{gap:var(--space-2)}.gap-3{gap:var(--space-3)}.gap-4{gap:var(--space-4)}.flex{display:flex}.flex-col{display:flex;flex-direction:column}