/* ═══════════════════════════════════════
   ELDEEB COIN PWA — Design System v2.0
   Full Responsive + Enhanced UI
   ═══════════════════════════════════════ */

*{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#0a0e17;--bg2:#111827;--bg3:#1a2332;
  --accent:#00f5a0;--accent2:#00d9f5;--gold:#f5a623;
  --red:#ff4757;--green:#2ed573;--purple:#8b5cf6;
  --text:#e2e8f0;--muted:#64748b;--border:rgba(255,255,255,.08);
  --glass:rgba(17,24,39,.7);--radius:16px;--radius-sm:10px;
}
body{font-family:'Cairo',sans-serif;background:var(--bg);color:var(--text);overflow-x:hidden;min-height:100vh;min-height:100dvh;direction:rtl;-webkit-tap-highlight-color:transparent}
a{color:var(--accent);text-decoration:none}
input,select,textarea{font-family:'Cairo',sans-serif}

/* ═══ Backgrounds ═══ */
.bg-grid{position:fixed;inset:0;background:linear-gradient(var(--bg) 1px,transparent 1px),linear-gradient(90deg,var(--bg) 1px,transparent 1px);background-size:60px 60px;background-color:rgba(0,245,160,.02);z-index:0;pointer-events:none}
.glow-accent{position:fixed;width:400px;height:400px;border-radius:50%;filter:blur(150px);opacity:.08;pointer-events:none;z-index:0}
.glow-1{background:var(--accent);top:-100px;right:-100px}
.glow-2{background:var(--accent2);bottom:-100px;left:-100px}

/* ═══ Layout ═══ */
.app-container{position:relative;z-index:1;min-height:100vh;min-height:100dvh;display:flex;flex-direction:column;max-width:520px;margin:0 auto;padding-bottom:80px}
.app-header{position:sticky;top:0;z-index:50;padding:14px 20px;display:flex;align-items:center;justify-content:space-between;background:rgba(10,14,23,.92);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--border)}
.app-header .logo{font-family:'Orbitron',sans-serif;font-size:1.2rem;font-weight:900;background:linear-gradient(135deg,var(--accent),var(--accent2));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.app-header .user-avatar{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent2));display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.9rem;color:#000;cursor:pointer;transition:.2s}
.app-header .user-avatar:active{transform:scale(.9)}

/* ═══ Bottom Nav ═══ */
.bottom-nav{position:fixed;bottom:0;left:50%;transform:translateX(-50%);width:100%;max-width:520px;display:flex;justify-content:space-around;padding:6px 0 env(safe-area-inset-bottom,6px);background:rgba(10,14,23,.96);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-top:1px solid var(--border);z-index:100}
.nav-item{display:flex;flex-direction:column;align-items:center;gap:2px;padding:8px 10px;border-radius:12px;cursor:pointer;transition:.2s;color:var(--muted);font-size:.6rem;border:none;background:none;-webkit-tap-highlight-color:transparent;min-width:56px}
.nav-item .nav-icon{font-size:1.2rem;transition:.2s}
.nav-item.active{color:var(--accent)}
.nav-item.active .nav-icon{filter:drop-shadow(0 0 8px rgba(0,245,160,.5));transform:scale(1.1)}
.nav-item:active{transform:scale(.92)}

/* ═══ Pages ═══ */
.page{display:none;padding:16px;animation:pageIn .3s ease}
.page.active{display:block}
@keyframes pageIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}

/* ═══ Auth Page ═══ */
.auth-container{min-height:80vh;min-height:80dvh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:20px}
.auth-logo{font-family:'Orbitron',sans-serif;font-size:2.2rem;font-weight:900;background:linear-gradient(135deg,var(--accent),var(--accent2));-webkit-background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:8px}
.auth-sub{color:var(--muted);margin-bottom:24px;font-size:.85rem}
.auth-card{width:100%;max-width:400px;background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:24px 20px;backdrop-filter:blur(10px)}
.auth-tabs{display:flex;gap:0;margin-bottom:20px;background:var(--bg);border-radius:var(--radius-sm);overflow:hidden}
.auth-tab{flex:1;padding:10px;text-align:center;cursor:pointer;font-weight:600;font-size:.85rem;color:var(--muted);transition:.3s;border:none;background:none}
.auth-tab.active{background:linear-gradient(135deg,var(--accent),var(--accent2));color:#000;border-radius:var(--radius-sm)}
.auth-divider{display:flex;align-items:center;gap:12px;margin:16px 0;color:var(--muted);font-size:.8rem}
.auth-divider::before,.auth-divider::after{content:'';flex:1;height:1px;background:var(--border)}
.tg-login-btn{width:100%;padding:12px;border-radius:var(--radius-sm);background:#0088cc;color:#fff;font-weight:700;font-size:.9rem;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:8px;transition:.3s}
.tg-login-btn:active{transform:scale(.97)}

/* ═══ Form Elements ═══ */
.form-group{margin-bottom:14px}
.form-group label{display:block;font-size:.78rem;color:var(--muted);margin-bottom:5px}
.form-input{width:100%;padding:12px 14px;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--bg);color:var(--text);font-size:.9rem;transition:.3s;outline:none;-webkit-appearance:none}
.form-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(0,245,160,.1)}
.form-input::placeholder{color:var(--muted)}
.btn{padding:12px 24px;border-radius:50px;font-weight:700;font-size:.9rem;cursor:pointer;transition:.3s;border:none;font-family:'Cairo';width:100%;display:flex;align-items:center;justify-content:center;gap:8px;-webkit-tap-highlight-color:transparent}
.btn-primary{background:linear-gradient(135deg,var(--accent),var(--accent2));color:#000}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(0,245,160,.3)}
.btn-primary:active{transform:scale(.97)}
.btn-primary:disabled{opacity:.5;cursor:not-allowed;transform:none}
.btn-outline{border:1px solid var(--accent);color:var(--accent);background:transparent}
.btn-sm{padding:8px 16px;font-size:.78rem;width:auto;border-radius:8px}
.form-error{color:var(--red);font-size:.78rem;margin-top:4px}
.form-hint{color:var(--muted);font-size:.72rem;margin-top:4px}

/* ═══ Stats Cards ═══ */
.stats-row{display:grid;grid-template-columns:1fr 1fr 1fr;gap:10px;margin-bottom:16px}
.stat-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:14px 10px;text-align:center;transition:.2s}
.stat-card:active{transform:scale(.97)}
.stat-card .stat-icon{font-size:1.3rem;margin-bottom:4px}
.stat-card .stat-val{font-family:'Orbitron',sans-serif;font-size:1.1rem;font-weight:700;background:linear-gradient(135deg,var(--accent),var(--accent2));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.stat-card .stat-lbl{font-size:.65rem;color:var(--muted);margin-top:2px}

/* ═══ Panels ═══ */
.panel{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:14px;overflow:hidden}
.panel-header{padding:12px 16px;font-weight:700;font-size:.85rem;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}
.panel-body{padding:14px 16px}

/* ═══ Price Display ═══ */
.price-hero{text-align:center;padding:20px 14px;background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:14px;position:relative;overflow:hidden}
.price-hero::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(0,245,160,.03),rgba(0,217,245,.03));pointer-events:none}
.price-label{font-size:.8rem;color:var(--muted)}
.price-value{font-family:'Orbitron',sans-serif;font-size:2.4rem;font-weight:900;background:linear-gradient(135deg,var(--accent),var(--accent2));-webkit-background-clip:text;-webkit-text-fill-color:transparent;margin:4px 0}
.price-change{font-size:.8rem;padding:4px 12px;border-radius:50px;display:inline-block}
.price-change.up{background:rgba(46,213,115,.15);color:var(--green)}
.price-change.down{background:rgba(255,71,87,.15);color:var(--red)}

/* ═══ Market Stats Grid ═══ */
.market-stats{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:14px}
.market-stat-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius-sm);padding:12px;text-align:center}
.market-stat-card .ms-label{font-size:.68rem;color:var(--muted);margin-bottom:4px}
.market-stat-card .ms-value{font-family:'Orbitron',sans-serif;font-size:.95rem;font-weight:700;color:var(--text)}

/* ═══ Chart ═══ */
.chart-container{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:14px;margin-bottom:14px}
.chart-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px;flex-wrap:wrap;gap:8px}
.chart-tabs{display:flex;gap:6px}
.chart-tab{padding:5px 12px;border-radius:50px;font-size:.7rem;border:1px solid var(--border);background:transparent;color:var(--muted);cursor:pointer;transition:.2s;-webkit-tap-highlight-color:transparent}
.chart-tab.active{background:var(--accent);color:#000;border-color:var(--accent);font-weight:700}
.chart-tab:active{transform:scale(.93)}
.chart-canvas{width:100%;height:200px}

/* ═══ Order List ═══ */
.order-item{display:flex;align-items:center;gap:10px;padding:12px 0;border-bottom:1px solid var(--border)}
.order-item:last-child{border-bottom:none}
.order-icon{width:38px;height:38px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:1.1rem;flex-shrink:0}
.order-icon.buy{background:rgba(0,245,160,.1)}
.order-icon.sell{background:rgba(255,71,87,.1)}
.order-info{flex:1;min-width:0}
.order-info .order-title{font-weight:600;font-size:.85rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.order-info .order-date{font-size:.7rem;color:var(--muted)}
.order-amount{text-align:left;font-family:'Orbitron';font-weight:700;font-size:.85rem;flex-shrink:0}
.order-amount.positive{color:var(--green)}
.order-amount.negative{color:var(--red)}

/* ═══ Status Badges ═══ */
.badge{padding:3px 10px;border-radius:50px;font-size:.68rem;font-weight:700}
.badge-success{background:rgba(46,213,115,.15);color:var(--green)}
.badge-warning{background:rgba(245,166,35,.15);color:var(--gold)}
.badge-pending{background:rgba(139,92,246,.15);color:var(--purple)}
.badge-error{background:rgba(255,71,87,.15);color:var(--red)}

/* ═══ Referral ═══ */
.ref-box{background:linear-gradient(135deg,rgba(0,245,160,.08),rgba(0,217,245,.08));border:1px solid rgba(0,245,160,.2);border-radius:var(--radius);padding:18px;text-align:center;margin-bottom:14px}
.ref-code{font-family:'Orbitron';font-size:1.1rem;font-weight:700;color:var(--accent);letter-spacing:2px;padding:10px;background:var(--bg);border-radius:var(--radius-sm);margin:10px 0;cursor:pointer;transition:.3s}
.ref-code:active{background:rgba(0,245,160,.1)}
.ref-link{font-size:.75rem;color:var(--muted);word-break:break-all;padding:8px;background:var(--bg);border-radius:8px;margin:8px 0}
.ref-stats{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:14px}

/* ═══ Wallet ═══ */
.wallet-balance{text-align:center;padding:24px 16px;background:linear-gradient(135deg,var(--bg2),var(--bg3));border:1px solid var(--border);border-radius:var(--radius);margin-bottom:14px}
.wallet-balance .balance-label{color:var(--muted);font-size:.8rem}
.wallet-balance .balance-value{font-family:'Orbitron';font-size:2.2rem;font-weight:900;color:var(--accent);margin:6px 0}
.wallet-balance .balance-usd{color:var(--muted);font-size:.9rem}
.wallet-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:14px}
.wallet-action-btn{padding:12px;border-radius:var(--radius);border:1px solid var(--border);background:var(--bg2);color:var(--text);font-weight:700;cursor:pointer;text-align:center;transition:.3s;font-family:'Cairo';font-size:.85rem;-webkit-tap-highlight-color:transparent}
.wallet-action-btn:active{border-color:var(--accent);background:rgba(0,245,160,.05);transform:scale(.97)}
.wallet-addr{font-family:'Orbitron';font-size:.65rem;word-break:break-all;color:var(--accent);padding:12px;background:var(--bg);border-radius:var(--radius-sm);text-align:center;cursor:pointer}

/* ═══ Settings ═══ */
.settings-item{display:flex;align-items:center;justify-content:space-between;padding:12px 0;border-bottom:1px solid var(--border)}
.settings-item:last-child{border-bottom:none}
.settings-item .si-right{display:flex;align-items:center;gap:8px}
.settings-item .si-icon{font-size:1.2rem}
.settings-item .si-label{font-size:.85rem}
.settings-item .si-value{color:var(--muted);font-size:.8rem;max-width:160px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.toggle{width:46px;height:26px;background:var(--bg);border-radius:13px;position:relative;cursor:pointer;transition:.3s;border:1px solid var(--border)}
.toggle.active{background:var(--accent)}
.toggle::after{content:'';position:absolute;width:20px;height:20px;background:#fff;border-radius:50%;top:2px;right:2px;transition:.3s}
.toggle.active::after{right:22px}

/* ═══ Toast ═══ */
.toast{position:fixed;top:80px;left:50%;transform:translateX(-50%);background:var(--bg2);border:1px solid var(--border);padding:10px 20px;border-radius:var(--radius-sm);font-size:.85rem;z-index:500;animation:toastIn .3s ease;box-shadow:0 10px 30px rgba(0,0,0,.4);max-width:90%;text-align:center}
@keyframes toastIn{from{opacity:0;transform:translateX(-50%) translateY(-20px)}to{opacity:1;transform:translateX(-50%) translateY(0)}}

/* ═══ Loading ═══ */
.loading{display:flex;align-items:center;justify-content:center;padding:40px}
.spinner{width:36px;height:36px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* ═══ Empty State ═══ */
.empty-state{text-align:center;padding:30px 16px;color:var(--muted)}
.empty-state .empty-icon{font-size:2.5rem;margin-bottom:10px;opacity:.5}
.empty-state p{font-size:.85rem}

/* ═══ QR Code ═══ */
.qr-container{text-align:center;margin:14px 0}
.qr-container img{border-radius:var(--radius-sm);border:2px solid var(--border);max-width:160px}

/* ═══ Modal ═══ */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.7);z-index:200;display:none;align-items:flex-end;justify-content:center}
.modal-overlay.show{display:flex}
.modal{width:100%;max-width:520px;background:var(--bg2);border-radius:var(--radius) var(--radius) 0 0;padding:20px;animation:slideUp .3s ease;max-height:85vh;max-height:85dvh;overflow-y:auto;-webkit-overflow-scrolling:touch}
@keyframes slideUp{from{transform:translateY(100%)}to{transform:translateY(0)}}
.modal-handle{width:40px;height:4px;background:var(--border);border-radius:2px;margin:0 auto 14px}

/* ═══ Page title ═══ */
.page-title{font-size:1.05rem;font-weight:700;margin-bottom:14px;display:flex;align-items:center;gap:8px}

/* ═══ Payment Methods ═══ */
.pay-methods-grid{display:flex;flex-direction:column;gap:8px;margin:12px 0}
.pay-method{display:flex;align-items:center;justify-content:space-between;padding:11px 12px;border-radius:var(--radius-sm);border:1.5px solid var(--border);background:var(--bg);cursor:pointer;transition:.3s;-webkit-tap-highlight-color:transparent}
.pay-method:active{transform:scale(.98)}
.pay-method.active{border-color:var(--accent);background:rgba(0,245,160,.06);box-shadow:0 0 12px rgba(0,245,160,.1)}
.pay-check{width:22px;height:22px;border-radius:50%;border:2px solid var(--border);display:flex;align-items:center;justify-content:center;font-size:.7rem;color:transparent;transition:.3s;flex-shrink:0}
.pay-method.active .pay-check{background:var(--accent);border-color:var(--accent);color:#000;font-weight:900}

/* ═══ Buy Amount Buttons ═══ */
.buy-amounts{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin:10px 0}
.buy-amt{padding:10px;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--bg);color:var(--text);font-weight:700;font-size:.85rem;cursor:pointer;text-align:center;transition:.2s;font-family:'Cairo'}
.buy-amt:active,.buy-amt.active{border-color:var(--accent);background:rgba(0,245,160,.08);color:var(--accent)}

/* ═══════════════════════════════════════
   RESPONSIVE — Mobile First
   ═══════════════════════════════════════ */

/* Small phones (320-380px) */
@media(max-width:380px){
  .page{padding:12px 10px}
  .price-value{font-size:2rem}
  .stat-card .stat-val{font-size:.95rem}
  .stat-card{padding:10px 6px}
  .wallet-balance .balance-value{font-size:1.8rem}
  .auth-logo{font-size:1.8rem}
  .modal{padding:16px 12px}
  .buy-amounts{grid-template-columns:repeat(2,1fr)}
  .nav-item{min-width:48px;padding:6px 6px;font-size:.55rem}
  .nav-item .nav-icon{font-size:1.1rem}
  .chart-canvas{height:160px}
  .chart-tab{padding:4px 8px;font-size:.62rem}
}

/* Regular phones (381-480px) — Default, already optimized */

/* Tablets (481-768px) */
@media(min-width:481px){
  .app-container{max-width:520px;border-left:1px solid var(--border);border-right:1px solid var(--border)}
  .page{padding:20px}
  .price-value{font-size:2.8rem}
  .chart-canvas{height:240px}
  .stats-row{gap:14px}
  .stat-card{padding:18px 14px}
  .stat-card .stat-val{font-size:1.3rem}
  .modal{max-width:520px;padding:24px;border-radius:var(--radius) var(--radius) 0 0}
}

/* Tablet landscape / Small desktop (769-1024px) */
@media(min-width:769px){
  .app-container{max-width:600px;margin:0 auto}
  .page{padding:24px}
  .price-value{font-size:3rem}
  .chart-canvas{height:280px}
  .auth-card{padding:30px 28px;max-width:440px}
  .bottom-nav{border-radius:var(--radius) var(--radius) 0 0}
}

/* Desktop (1025px+) */
@media(min-width:1025px){
  .app-container{max-width:480px;min-height:100vh;box-shadow:0 0 60px rgba(0,245,160,.05)}
  .glow-1{width:500px;height:500px;right:calc(50% - 600px)}
  .glow-2{width:500px;height:500px;left:calc(50% - 600px)}
}

/* Landscape orientation fix */
@media(max-height:500px) and (orientation:landscape){
  .auth-container{min-height:auto;padding:10px}
  .auth-logo{font-size:1.5rem}
  .modal{max-height:95vh}
  .price-hero{padding:14px}
  .price-value{font-size:1.8rem}
  .chart-canvas{height:140px}
  .bottom-nav{padding:4px 0}
  .nav-item .nav-icon{font-size:1rem}
}

/* ═══ Ticker Bar ═══ */
.ticker-bar{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius-sm);padding:0;overflow:hidden;position:relative}
.ticker-track{display:flex;align-items:center;gap:0;animation:tickerScroll 30s linear infinite;padding:8px 0;width:max-content}
.ticker-item{display:flex;align-items:center;gap:6px;padding:0 14px;white-space:nowrap;border-left:1px solid var(--border)}
.ticker-item:first-child{border-left:none}
.ticker-name{font-size:.7rem;font-weight:700;color:var(--muted)}
.ticker-price{font-family:'Orbitron',sans-serif;font-size:.72rem;font-weight:700;color:var(--text)}
.ticker-chg{font-size:.62rem;padding:1px 6px;border-radius:4px}
.ticker-chg.up{background:rgba(46,213,115,.15);color:var(--green)}
.ticker-chg.down{background:rgba(255,71,87,.15);color:var(--red)}
.ticker-sep{color:var(--border);padding:0 4px;font-size:.7rem}
@keyframes tickerScroll{0%{transform:translateX(0)}100%{transform:translateX(-50%)}}
.ticker-bar:hover .ticker-track{animation-play-state:paused}

/* ═══ Activity Feed ═══ */
.activity-item{display:flex;align-items:center;gap:10px;padding:8px 0;border-bottom:1px solid var(--border);font-size:.8rem}
.activity-item:last-child{border-bottom:none}
.activity-icon{width:32px;height:32px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:.9rem;flex-shrink:0}
.activity-icon.buy{background:rgba(0,245,160,.1)}
.activity-icon.sell{background:rgba(255,71,87,.1)}
.activity-info{flex:1;min-width:0}
.activity-info .act-title{font-weight:600;font-size:.78rem}
.activity-info .act-time{font-size:.65rem;color:var(--muted)}
.activity-amount{font-family:'Orbitron';font-weight:700;font-size:.75rem;flex-shrink:0}

/* Live indicator pulse */
#liveIndicator{animation:livePulse 2s ease-in-out infinite}
@keyframes livePulse{0%,100%{opacity:1}50%{opacity:.4}}

/* Dark mode scrollbar */
::-webkit-scrollbar{width:4px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}

/* Smooth scroll */
html{scroll-behavior:smooth}

/* Focus visible for accessibility */
*:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* ═══ Wallet Connect Buttons ═══ */
.wallet-connect-btn{
  display:flex;align-items:center;gap:10px;
  padding:12px 14px;border-radius:12px;
  background:rgba(255,255,255,.04);border:1px solid var(--border);
  color:var(--text);cursor:pointer;transition:all .25s ease;
  font-size:.8rem;font-family:inherit;
}
.wallet-connect-btn:hover{
  background:rgba(0,245,160,.08);border-color:var(--accent);
  transform:translateY(-2px);box-shadow:0 4px 15px rgba(0,245,160,.15);
}
.wallet-connect-btn:active{transform:translateY(0)}
.wallet-connect-btn img,.wallet-connect-btn div{flex-shrink:0}
.wallet-connect-btn span{font-weight:600}