/* ═══════════════════════════════════════════════════════════
   ReffeHub - Main Stylesheet
   Dark Glassmorphism Theme
   ═══════════════════════════════════════════════════════════ */

:root {
    --bg-primary: #0a0a0f;
    --bg-surface: #111118;
    --bg-card: rgba(255,255,255,0.03);
    --bg-card-hover: rgba(255,255,255,0.06);
    --border: #1e1e2e;
    --border-hover: #2d2d3d;
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --text-muted: #475569;
    --accent: #00d4aa;
    --accent-hover: #00e4ba;
    --accent-glow: rgba(0,212,170,0.15);
    --purple: #7c3aed;
    --purple-glow: rgba(124,58,237,0.15);
    --danger: #ef4444;
    --warning: #f59e0b;
    --success: #00d4aa;
    --info: #3b82f6;
    --radius-sm: 6px;
    --radius: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --blur: blur(12px);
    --transition: 200ms ease;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --nav-height: 60px;
    --mobile-nav-height: 64px;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
    font-family: var(--font);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-hover); }

img { max-width: 100%; display: block; }
button { font-family: var(--font); cursor: pointer; border: none; background: none; color: inherit; }
input, select, textarea { font-family: var(--font); }

/* ── Scrollbar ─────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: #2d2d3d; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #3d3d4d; }

/* ── Navbar ────────────────────────────────── */
.navbar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    height: var(--nav-height);
    background: rgba(10,10,15,0.85);
    backdrop-filter: var(--blur);
    border-bottom: 1px solid var(--border);
}
.navbar-inner {
    max-width: 1280px; margin: 0 auto; height: 100%;
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 1.5rem;
}
.navbar-brand { display: flex; align-items: center; gap: 8px; }
.brand-text { font-size: 1.25rem; font-weight: 700; color: var(--text-primary); }
.brand-accent { color: var(--accent); }

.navbar-menu { display: flex; align-items: center; gap: 0.25rem; }
.nav-link {
    padding: 6px 14px; border-radius: var(--radius); font-size: 0.85rem;
    font-weight: 500; color: var(--text-secondary); transition: all var(--transition);
}
.nav-link:hover, .nav-link.active { color: var(--text-primary); background: rgba(255,255,255,0.05); }

.navbar-actions { display: flex; align-items: center; gap: 0.5rem; }

/* Language Switcher */
.lang-switcher { position: relative; }
.lang-btn {
    display: flex; align-items: center; gap: 4px;
    padding: 6px 10px; border-radius: var(--radius); font-size: 0.8rem;
    font-weight: 600; color: var(--text-secondary); transition: all var(--transition);
}
.lang-btn:hover { color: var(--text-primary); background: rgba(255,255,255,0.05); }
.lang-dropdown {
    position: absolute; top: 100%; right: 0; margin-top: 4px;
    background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius);
    min-width: 150px; display: none; overflow: hidden; z-index: 100;
}
.lang-dropdown.open { display: block; }
.lang-option {
    display: block; width: 100%; padding: 8px 14px; text-align: left;
    font-size: 0.85rem; color: var(--text-secondary); transition: all var(--transition);
}
.lang-option i { width: 14px; margin-right: 8px; color: var(--accent); }
.lang-option:hover { background: rgba(255,255,255,0.05); color: var(--text-primary); }

/* Notification */
.nav-icon-btn {
    position: relative; padding: 8px; border-radius: var(--radius);
    color: var(--text-secondary); transition: all var(--transition);
}
.nav-icon-btn:hover { color: var(--text-primary); background: rgba(255,255,255,0.05); }
.notif-badge {
    position: absolute; top: 2px; right: 2px; width: 16px; height: 16px;
    background: var(--danger); color: #fff; border-radius: 50%; font-size: 0.65rem;
    font-weight: 700; display: flex; align-items: center; justify-content: center;
}

/* User Menu */
.user-menu { position: relative; }
.user-menu-btn {
    display: flex; align-items: center; gap: 8px; padding: 4px 10px 4px 4px;
    border-radius: 20px; transition: all var(--transition);
}
.user-menu-btn:hover { background: rgba(255,255,255,0.05); }
.user-avatar-small {
    width: 30px; height: 30px; border-radius: 50%; background: var(--purple);
    display: flex; align-items: center; justify-content: center;
    font-size: 0.8rem; font-weight: 700; color: #fff;
}
.user-menu-name { font-size: 0.85rem; font-weight: 500; color: var(--text-secondary); }
.user-dropdown {
    position: absolute; top: 100%; right: 0; margin-top: 8px;
    background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius-lg);
    min-width: 180px; display: none; overflow: hidden; z-index: 100;
    box-shadow: 0 10px 40px rgba(0,0,0,0.4);
}
.user-dropdown.open { display: block; }
.dropdown-item {
    display: block; width: 100%; padding: 10px 16px; text-align: left;
    font-size: 0.85rem; color: var(--text-secondary); transition: all var(--transition);
}
.dropdown-item:hover { background: rgba(255,255,255,0.05); color: var(--text-primary); }
.dropdown-item-admin { color: var(--purple); }
.dropdown-item-danger { color: var(--danger); }
.dropdown-divider { height: 1px; background: var(--border); margin: 4px 0; }

/* Hamburger */
.nav-hamburger {
    display: none; flex-direction: column; gap: 4px; padding: 8px;
    border-radius: var(--radius);
}
.nav-hamburger span {
    display: block; width: 18px; height: 2px; background: var(--text-secondary);
    border-radius: 1px; transition: all var(--transition);
}

/* ── Buttons ───────────────────────────────── */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 6px;
    font-weight: 600; border-radius: var(--radius); transition: all var(--transition);
    white-space: nowrap; border: 1.5px solid transparent;
}
.btn-xs { padding: 4px 10px; font-size: 0.75rem; }
.btn-sm { padding: 6px 16px; font-size: 0.8rem; }
.btn-md { padding: 8px 20px; font-size: 0.85rem; }
.btn-lg { padding: 10px 24px; font-size: 0.9rem; }
.btn-primary { background: var(--accent); color: var(--bg-primary); border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); box-shadow: 0 0 20px var(--accent-glow); }
.btn-ghost { background: transparent; color: var(--text-secondary); border-color: var(--border); }
.btn-ghost:hover { color: var(--text-primary); border-color: var(--border-hover); background: rgba(255,255,255,0.03); }
.btn-purple { background: var(--purple); color: #fff; border-color: var(--purple); }
.btn-purple:hover { box-shadow: 0 0 20px var(--purple-glow); }
.btn-danger { background: var(--danger); color: #fff; border-color: var(--danger); }
.btn-block { width: 100%; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* ── Forms ─────────────────────────────────── */
.form-group { margin-bottom: 1rem; }
.form-label { display: block; font-size: 0.8rem; font-weight: 500; color: var(--text-secondary); margin-bottom: 4px; }
.form-input, .form-select {
    width: 100%; padding: 10px 14px; background: rgba(255,255,255,0.04);
    border: 1px solid var(--border); border-radius: var(--radius); color: var(--text-primary);
    font-size: 0.9rem; transition: border var(--transition);
}
.form-select {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    padding-right: 42px;
    background-image:
        linear-gradient(45deg, transparent 50%, var(--text-secondary) 50%),
        linear-gradient(135deg, var(--text-secondary) 50%, transparent 50%);
    background-position:
        calc(100% - 18px) calc(50% - 3px),
        calc(100% - 12px) calc(50% - 3px);
    background-size: 6px 6px, 6px 6px;
    background-repeat: no-repeat;
}
.form-input:focus, .form-select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }
.form-input::placeholder { color: var(--text-muted); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-error { font-size: 0.75rem; color: var(--danger); margin-top: 4px; }
.tag {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.38rem 0.7rem;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: rgba(255,255,255,0.02);
    color: var(--text-secondary);
    font-size: 0.74rem;
    font-weight: 600;
}
.section-stack > * + * { margin-top: 1rem; }

/* ── Cards ─────────────────────────────────── */
.glass-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    backdrop-filter: var(--blur);
    transition: all var(--transition);
}
.glass-card:hover { background: var(--bg-card-hover); border-color: var(--border-hover); }

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 1.25rem;
    backdrop-filter: var(--blur);
}
.stat-card-value { font-size: 1.5rem; font-weight: 700; color: var(--text-primary); margin-top: 0.5rem; }
.stat-card-label { font-size: 0.8rem; color: var(--text-secondary); }
.stat-card-icon { width: 36px; height: 36px; border-radius: var(--radius); display: flex; align-items: center; justify-content: center; }

/* ── Main Content ──────────────────────────── */
.main-content {
    margin-top: var(--nav-height);
    min-height: calc(100vh - var(--nav-height));
    padding-bottom: 2rem;
}
.container { max-width: 1280px; margin: 0 auto; padding: 0 1.5rem; }
.page-section { padding: 3rem 0; }
.page-header { margin-bottom: 2rem; }
.page-title { font-size: 1.5rem; font-weight: 700; }
.page-subtitle { color: var(--text-secondary); font-size: 0.9rem; margin-top: 0.25rem; }

/* ── Grid ──────────────────────────────────── */
.grid { display: grid; gap: 1rem; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* ── Table ─────────────────────────────────── */
.table-wrapper { overflow-x: auto; border-radius: var(--radius-lg); border: 1px solid var(--border); }
.data-table { width: 100%; border-collapse: collapse; }
.data-table th {
    padding: 12px 16px; text-align: left; font-size: 0.75rem;
    font-weight: 600; color: var(--text-muted); text-transform: uppercase;
    letter-spacing: 0.05em; background: rgba(255,255,255,0.02);
    border-bottom: 1px solid var(--border);
}
.data-table td {
    padding: 12px 16px; font-size: 0.85rem; color: var(--text-secondary);
    border-bottom: 1px solid rgba(255,255,255,0.02);
}
.data-table tr:hover td { background: rgba(255,255,255,0.02); }
.data-table .rank-1 { color: #ffd700; font-weight: 700; }
.data-table .rank-2 { color: #c0c0c0; font-weight: 700; }
.data-table .rank-3 { color: #cd7f32; font-weight: 700; }

/* ── Badges ────────────────────────────────── */
.badge {
    display: inline-flex; align-items: center; padding: 2px 8px; border-radius: 20px;
    font-size: 0.7rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.03em;
}
.badge-success { background: rgba(0,212,170,0.1); color: var(--accent); }
.badge-warning { background: rgba(245,158,11,0.1); color: var(--warning); }
.badge-danger { background: rgba(239,68,68,0.1); color: var(--danger); }
.badge-info { background: rgba(59,130,246,0.1); color: var(--info); }
.badge-purple { background: rgba(124,58,237,0.1); color: var(--purple); }

/* ── Modal ─────────────────────────────────── */
.modal-overlay {
    position: fixed; inset: 0; z-index: 2000;
    background: rgba(0,0,0,0.6); backdrop-filter: blur(4px);
    display: none; align-items: center; justify-content: center; padding: 1rem;
}
.modal-overlay.open { display: flex; }
.modal-container {
    background: var(--bg-surface); border: 1px solid var(--border);
    border-radius: var(--radius-xl); width: 100%; max-width: 420px;
    max-height: 90vh; overflow-y: auto; position: relative;
}
.modal-close {
    position: absolute; top: 12px; right: 12px; width: 32px; height: 32px;
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
    font-size: 1.2rem; color: var(--text-muted); transition: all var(--transition);
}
.modal-close:hover { background: rgba(255,255,255,0.05); color: var(--text-primary); }
.modal-content { padding: 2rem; }
.modal-title { font-size: 1.2rem; font-weight: 700; margin-bottom: 0.5rem; }
.modal-subtitle { font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 1.5rem; }

/* ── Notification Panel ────────────────────── */
.notif-panel {
    position: fixed; top: var(--nav-height); right: 0; z-index: 1500;
    width: 360px; max-height: calc(100vh - var(--nav-height) - 20px);
    background: var(--bg-surface); border: 1px solid var(--border);
    border-radius: 0 0 0 var(--radius-xl); overflow-y: auto;
    display: none; box-shadow: -10px 10px 40px rgba(0,0,0,0.4);
}
.notif-panel.open { display: block; }
.notif-panel-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 16px; border-bottom: 1px solid var(--border);
}
.notif-panel-header h3 { font-size: 0.9rem; font-weight: 600; }
.notif-mark-all { font-size: 0.75rem; color: var(--accent); }
.notif-list { padding: 8px; }
.notif-item {
    padding: 12px; border-radius: var(--radius); cursor: pointer; transition: all var(--transition);
}
.notif-item:hover { background: rgba(255,255,255,0.03); }
.notif-item.unread { border-left: 2px solid var(--accent); }
.notif-item-title { font-size: 0.85rem; font-weight: 500; }
.notif-item-msg { font-size: 0.8rem; color: var(--text-secondary); margin-top: 2px; }
.notif-item-time { font-size: 0.7rem; color: var(--text-muted); margin-top: 4px; }

/* ── Chat Widget ───────────────────────────── */
.chat-widget { position: fixed; bottom: 80px; right: 20px; z-index: 1500; }
.chat-widget-btn {
    width: 52px; height: 52px; border-radius: 50%; background: var(--accent);
    color: var(--bg-primary); display: flex; align-items: center; justify-content: center;
    box-shadow: 0 4px 20px var(--accent-glow); transition: all var(--transition);
}
.chat-widget-btn:hover { transform: scale(1.05); box-shadow: 0 6px 30px var(--accent-glow); }
.chat-window {
    position: absolute; bottom: 60px; right: 0; width: 340px; height: 440px;
    background: var(--bg-surface); border: 1px solid var(--border);
    border-radius: var(--radius-xl); overflow: hidden;
    display: flex; flex-direction: column;
    box-shadow: 0 10px 40px rgba(0,0,0,0.5);
}
.chat-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 14px 16px; background: rgba(255,255,255,0.03);
    border-bottom: 1px solid var(--border);
}
.chat-header-info { display: flex; align-items: center; gap: 8px; font-size: 0.85rem; font-weight: 600; }
.chat-status-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); }
.chat-minimize { font-size: 1.2rem; color: var(--text-muted); padding: 4px; }
.chat-messages { flex: 1; overflow-y: auto; padding: 16px; display: flex; flex-direction: column; gap: 10px; }
.chat-msg {
    max-width: 85%; padding: 10px 14px; border-radius: var(--radius-lg);
    font-size: 0.85rem; line-height: 1.5;
}
.chat-msg.user { align-self: flex-end; background: var(--accent); color: var(--bg-primary); border-bottom-right-radius: 4px; }
.chat-msg.bot { align-self: flex-start; background: rgba(255,255,255,0.06); color: var(--text-primary); border-bottom-left-radius: 4px; }
.chat-msg.typing { color: var(--text-muted); font-style: italic; }
.chat-input-area {
    display: flex; align-items: center; gap: 8px; padding: 12px;
    border-top: 1px solid var(--border);
}
.chat-input {
    flex: 1; padding: 8px 12px; background: rgba(255,255,255,0.04);
    border: 1px solid var(--border); border-radius: var(--radius); color: var(--text-primary);
    font-size: 0.85rem;
}
.chat-input:focus { outline: none; border-color: var(--accent); }
.chat-send {
    width: 36px; height: 36px; border-radius: 50%; background: var(--accent);
    color: var(--bg-primary); display: flex; align-items: center; justify-content: center;
    transition: all var(--transition);
}
.chat-send:hover { background: var(--accent-hover); }

/* ── Mobile Bottom Nav ─────────────────────── */
.mobile-nav {
    position: fixed; bottom: 0; left: 0; right: 0; z-index: 1000;
    height: var(--mobile-nav-height);
    background: rgba(10,10,15,0.95);
    backdrop-filter: var(--blur);
    border-top: 1px solid var(--border);
    display: none; align-items: center; justify-content: space-around;
    padding: 0 0.5rem;
}
.mobile-nav-item {
    display: flex; flex-direction: column; align-items: center; gap: 2px;
    padding: 8px 4px; font-size: 0.65rem; color: var(--text-muted);
    transition: all var(--transition); min-width: 56px;
}
.mobile-nav-item.active, .mobile-nav-item:hover { color: var(--accent); }
.mobile-nav-item svg { opacity: 0.7; }
.mobile-nav-item.active svg, .mobile-nav-item:hover svg { opacity: 1; }

/* ── Toast ─────────────────────────────────── */
.toast-container {
    position: fixed; bottom: 80px; left: 50%; transform: translateX(-50%);
    z-index: 3000; display: flex; flex-direction: column; gap: 8px;
    pointer-events: none;
}
.toast {
    padding: 10px 20px; border-radius: var(--radius); font-size: 0.85rem;
    font-weight: 500; backdrop-filter: var(--blur); pointer-events: auto;
    animation: toastIn 0.3s ease, toastOut 0.3s ease 3s forwards;
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}
.toast-success { background: rgba(0,212,170,0.9); color: var(--bg-primary); }
.toast-error { background: rgba(239,68,68,0.9); color: #fff; }
.toast-info { background: rgba(59,130,246,0.9); color: #fff; }
@keyframes toastIn { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes toastOut { to { opacity: 0; transform: translateY(-20px); } }

.rh-ui-root { position: fixed; inset: 0; pointer-events: none; z-index: 5000; }
.rh-toast-stack {
    position: fixed;
    top: calc(var(--nav-height) + 18px);
    right: 18px;
    display: grid;
    gap: 0.7rem;
    width: min(360px, calc(100vw - 24px));
    pointer-events: none;
}
.rh-toast {
    display: grid;
    grid-template-columns: 42px 1fr 28px;
    gap: 0.75rem;
    align-items: start;
    border-radius: 18px;
    border: 1px solid rgba(255,255,255,0.08);
    background: linear-gradient(180deg, rgba(17,17,24,0.96), rgba(10,10,15,0.96));
    box-shadow: 0 20px 50px rgba(0,0,0,0.38);
    padding: 0.9rem;
    opacity: 0;
    transform: translateY(-10px) scale(0.98);
    transition: opacity 180ms ease, transform 180ms ease;
    pointer-events: auto;
}
.rh-toast.is-visible { opacity: 1; transform: translateY(0) scale(1); }
.rh-toast.is-leaving { opacity: 0; transform: translateY(-10px) scale(0.98); }
.rh-toast-icon {
    width: 42px;
    height: 42px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
}
.rh-toast-success .rh-toast-icon { background: rgba(0,212,170,0.12); color: var(--accent); }
.rh-toast-error .rh-toast-icon { background: rgba(239,68,68,0.12); color: var(--danger); }
.rh-toast-info .rh-toast-icon { background: rgba(59,130,246,0.12); color: var(--info); }
.rh-toast-warning .rh-toast-icon { background: rgba(245,158,11,0.12); color: var(--warning); }
.rh-toast-content { font-size: 0.86rem; color: var(--text-primary); line-height: 1.55; padding-top: 0.15rem; }
.rh-toast-close {
    width: 28px;
    height: 28px;
    border-radius: 10px;
    color: var(--text-secondary);
}
.rh-toast-close:hover { background: rgba(255,255,255,0.05); color: var(--text-primary); }
.rh-dialog-overlay {
    position: fixed;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    background: rgba(5,8,14,0.7);
    backdrop-filter: blur(10px);
    pointer-events: auto;
}
.rh-dialog-overlay.open { display: flex; }
.rh-dialog-card {
    width: min(520px, 100%);
    border-radius: 24px;
    border: 1px solid rgba(255,255,255,0.08);
    background: linear-gradient(180deg, rgba(17,17,24,0.98), rgba(10,10,15,0.98));
    box-shadow: 0 35px 80px rgba(0,0,0,0.42);
    padding: 1.2rem;
}
.rh-dialog-head {
    display: grid;
    grid-template-columns: 52px 1fr;
    gap: 0.9rem;
    align-items: start;
}
.rh-dialog-icon {
    width: 52px;
    height: 52px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.05rem;
}
.rh-dialog-icon.is-info,
.rh-dialog-icon.is-select { background: rgba(59,130,246,0.12); color: var(--info); }
.rh-dialog-icon.is-success { background: rgba(0,212,170,0.12); color: var(--accent); }
.rh-dialog-icon.is-error { background: rgba(239,68,68,0.12); color: var(--danger); }
.rh-dialog-icon.is-warning,
.rh-dialog-icon.is-confirm,
.rh-dialog-icon.is-prompt { background: rgba(245,158,11,0.12); color: var(--warning); }
.rh-dialog-title { font-size: 1.05rem; font-weight: 700; margin-bottom: 0.3rem; }
.rh-dialog-message { color: var(--text-secondary); font-size: 0.84rem; line-height: 1.6; }
.rh-dialog-body { margin-top: 1rem; }
.rh-dialog-error { min-height: 1.1rem; margin-top: 0.75rem; font-size: 0.78rem; color: var(--danger); }
.rh-dialog-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-top: 1rem;
}
.rh-field { display: grid; gap: 0.45rem; }
.rh-field-label { font-size: 0.8rem; color: var(--text-secondary); font-weight: 600; }
.rh-field-control {
    width: 100%;
    padding: 0.85rem 0.95rem;
    border-radius: 14px;
    border: 1px solid var(--border);
    background: rgba(255,255,255,0.03);
    color: var(--text-primary);
    font: inherit;
    resize: vertical;
}
.rh-field-control:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}
.rh-field-select {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image:
        linear-gradient(45deg, transparent 50%, var(--text-secondary) 50%),
        linear-gradient(135deg, var(--text-secondary) 50%, transparent 50%);
    background-position:
        calc(100% - 18px) calc(50% - 3px),
        calc(100% - 12px) calc(50% - 3px);
    background-size: 6px 6px, 6px 6px;
    background-repeat: no-repeat;
    padding-right: 42px;
}

/* ── Skeleton Loader ───────────────────────── */
.skeleton {
    background: linear-gradient(90deg, var(--bg-card) 25%, rgba(255,255,255,0.06) 50%, var(--bg-card) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius);
}
.skeleton-title { height: 28px; width: 200px; margin-bottom: 1rem; }
.skeleton-text { height: 16px; width: 100%; margin-bottom: 0.5rem; }
.skeleton-text.short { width: 60%; }
.skeleton-card { height: 120px; width: 100%; margin-top: 1rem; border-radius: var(--radius-xl); }
.skeleton-circle { border-radius: 50%; }
@keyframes shimmer { 0% { background-position: -200% 0; } 100% { background-position: 200% 0; } }

.page-loader { padding: 2rem; max-width: 800px; margin: 0 auto; }

/* ── Hero Section ──────────────────────────── */
.hero {
    text-align: center;
    padding: 5rem 1.5rem 3.5rem;
    min-height: 460px;
    display: flex;
    align-items: center;
    background:
        radial-gradient(circle at 50% 0%, rgba(0,212,170,0.12) 0%, transparent 38%),
        radial-gradient(circle at 10% 20%, rgba(124,58,237,0.08) 0%, transparent 30%);
}
.hero-inner {
    display: grid;
    gap: 2rem;
}
.hero-copy {
    max-width: 760px;
    margin: 0 auto;
}
.hero-tag {
    margin: 0 auto 1rem;
    justify-content: center;
    max-width: max-content;
}
.hero-title { font-size: 2.5rem; font-weight: 800; line-height: 1.2; margin-bottom: 1rem; }
.hero-title .accent { color: var(--accent); }
.hero-title .purple { color: var(--purple); }
.hero-subtitle { font-size: 1rem; color: var(--text-secondary); max-width: 500px; margin: 0 auto 2rem; }
.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
    max-width: 880px;
    margin: 0 auto;
}
.hero-stat {
    text-align: center;
    padding: 1.1rem;
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: 18px;
    background: rgba(255,255,255,0.025);
}
.hero-stat-value { font-size: 1.8rem; font-weight: 700; color: var(--accent); }
.hero-stat-label { font-size: 0.8rem; color: var(--text-muted); margin-top: 2px; }

/* ── How It Works ──────────────────────────── */
.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.step-card { text-align: center; padding: 2rem 1.5rem; }
.step-number {
    width: 40px; height: 40px; border-radius: 50%; margin: 0 auto 1rem;
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 1rem;
}
.step-number.s1 { background: var(--accent-glow); color: var(--accent); }
.step-number.s2 { background: var(--purple-glow); color: var(--purple); }
.step-number.s3 { background: rgba(245,158,11,0.15); color: var(--warning); }
.step-card h3 { font-size: 0.95rem; font-weight: 600; margin-bottom: 0.5rem; }
.step-card p { font-size: 0.85rem; color: var(--text-secondary); }

/* ── Exchange Grid ─────────────────────────── */
.exchange-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1rem; }
.exchange-card {
    display: flex; align-items: center; gap: 1rem; padding: 1.25rem;
    cursor: pointer;
}
.exchange-card-logo {
    width: 48px; height: 48px; border-radius: var(--radius-lg);
    background: rgba(255,255,255,0.05); display: flex; align-items: center;
    justify-content: center; flex-shrink: 0; overflow: hidden;
}
.exchange-card-logo img { width: 32px; height: 32px; }
.exchange-card-info { flex: 1; min-width: 0; }
.exchange-card-name { font-weight: 600; font-size: 0.95rem; }
.exchange-card-rate { font-size: 0.8rem; color: var(--accent); margin-top: 2px; }
.exchange-card-desc {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 2px;
    line-height: 1.65;
    word-break: break-word;
}
.exchange-card-action { flex-shrink: 0; }
.exchanges-shell { display: grid; gap: 1rem; }
.exchanges-intro { padding: 1rem 1.1rem; }
.exchange-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    flex-wrap: wrap;
}
.exchange-filter-group { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.exchange-grid-advanced { grid-template-columns: repeat(auto-fit, minmax(min(100%, 340px), 1fr)); }
.exchange-card-advanced {
    display: grid;
    gap: 1rem;
    padding: 1.35rem;
    cursor: default;
    min-height: 100%;
    align-content: start;
}
.exchange-card-head {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: flex-start;
    gap: 1rem;
}
.exchange-card-brand {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    min-width: 0;
}
.exchange-card-brand > div { min-width: 0; flex: 1; }
.exchange-card-logo-lg { width: 56px; height: 56px; }
.exchange-card-fallback {
    width: 100%;
    height: 100%;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
}
.exchange-card-name-row {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    flex-wrap: wrap;
    margin-bottom: 0.35rem;
}
.exchange-card-action-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: flex-end;
    align-self: start;
}
.exchange-card-status-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}
.exchange-card-metrics {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0.75rem;
}
.exchange-card-metrics > div {
    padding: 0.8rem;
    border-radius: var(--radius-lg);
    background: rgba(255,255,255,0.025);
    border: 1px solid rgba(255,255,255,0.04);
}
.exchange-card-metric-label {
    display: block;
    font-size: 0.72rem;
    color: var(--text-muted);
    margin-bottom: 0.3rem;
}
.exchange-card-hint,
.exchange-card-error {
    display: flex;
    align-items: flex-start;
    gap: 0.65rem;
    border-radius: var(--radius-lg);
    padding: 0.85rem 0.95rem;
    font-size: 0.82rem;
}
.exchange-card-hint {
    color: var(--text-secondary);
    background: rgba(255,255,255,0.02);
}
.exchange-card-error {
    color: #fecaca;
    background: rgba(239,68,68,0.12);
    border: 1px solid rgba(239,68,68,0.2);
}
.exchange-callout-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.85rem;
}
.exchange-callout {
    display: flex;
    gap: 0.85rem;
    padding: 0.95rem;
    border-radius: var(--radius-lg);
    background: rgba(255,255,255,0.02);
    border: 1px solid rgba(255,255,255,0.035);
}
.exchange-callout strong {
    display: block;
    font-size: 0.88rem;
    margin-bottom: 0.25rem;
}
.exchange-callout p {
    font-size: 0.8rem;
    color: var(--text-secondary);
}
.exchange-callout-icon,
.exchange-modal-logo {
    width: 42px;
    height: 42px;
    border-radius: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(0,212,170,0.12);
    color: var(--accent);
    flex-shrink: 0;
}
.exchange-modal-head {
    display: flex;
    gap: 0.9rem;
    align-items: flex-start;
    margin-bottom: 1rem;
}
.exchange-modal-steps {
    display: grid;
    gap: 0.65rem;
    margin-bottom: 1rem;
}
.exchange-modal-step {
    display: flex;
    gap: 0.75rem;
    align-items: flex-start;
    padding: 0.85rem 0.95rem;
    border-radius: var(--radius-lg);
    background: rgba(255,255,255,0.02);
}
.exchange-modal-step span {
    width: 24px;
    height: 24px;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-glow);
    color: var(--accent);
    font-size: 0.74rem;
    font-weight: 700;
    flex-shrink: 0;
}

/* ── Leaderboard ───────────────────────────── */
.lb-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1rem; flex-wrap: wrap; gap: 0.5rem; }
.lb-period { display: flex; align-items: center; gap: 8px; font-size: 0.85rem; color: var(--text-secondary); }
.lb-countdown { color: var(--accent); font-weight: 600; font-variant-numeric: tabular-nums; }
.lb-top3 {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem;
    margin-bottom: 2rem;
}
.lb-top-card { text-align: center; padding: 1.5rem 1rem; position: relative; }
.lb-top-rank { font-size: 1.5rem; margin-bottom: 0.5rem; }
.lb-top-name { font-weight: 600; font-size: 0.95rem; }
.lb-top-volume { font-size: 0.8rem; color: var(--text-secondary); margin-top: 4px; }
.lb-top-reward { font-size: 1.1rem; font-weight: 700; color: var(--accent); margin-top: 8px; }
.lb-me { background: var(--accent-glow) !important; }

/* ── Dashboard ─────────────────────────────── */
.dash-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; margin-bottom: 2rem; }
.dash-chart { margin-bottom: 2rem; }
.dash-chart canvas { width: 100% !important; height: 250px !important; }

/* ── Profile ───────────────────────────────── */
.profile-header { display: flex; align-items: center; gap: 1.5rem; margin-bottom: 2rem; }
.profile-avatar {
    width: 80px; height: 80px; border-radius: 50%; background: var(--purple);
    display: flex; align-items: center; justify-content: center;
    font-size: 2rem; font-weight: 700; color: #fff; flex-shrink: 0;
}
.profile-info h2 { font-size: 1.3rem; font-weight: 700; }
.profile-info p { color: var(--text-secondary); font-size: 0.85rem; }
.profile-sections { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }

/* ── Tabs ──────────────────────────────────── */
.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--border); margin-bottom: 1.5rem; }
.tab-btn {
    padding: 10px 16px; font-size: 0.85rem; font-weight: 500;
    color: var(--text-muted); border-bottom: 2px solid transparent;
    transition: all var(--transition); margin-bottom: -1px;
}
.tab-btn:hover { color: var(--text-secondary); }
.tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); }
.tab-content { display: none; }
.tab-content.active { display: block; }

/* ── Pagination ────────────────────────────── */
.pagination { display: flex; align-items: center; justify-content: center; gap: 4px; margin-top: 1.5rem; }
.pagination-btn {
    padding: 6px 12px; border-radius: var(--radius); font-size: 0.8rem;
    color: var(--text-secondary); transition: all var(--transition);
}
.pagination-btn:hover { background: rgba(255,255,255,0.05); color: var(--text-primary); }
.pagination-btn.active { background: var(--accent); color: var(--bg-primary); }
.pagination-btn:disabled { opacity: 0.45; cursor: not-allowed; }
.pagination-btn:disabled:hover { background: transparent; color: var(--text-secondary); }
.pagination-gap { color: var(--text-muted); font-size: 0.8rem; padding: 0 2px; }
.pagination-meta { margin-left: 0.5rem; font-size: 0.78rem; color: var(--text-muted); }

/* ── Empty State ───────────────────────────── */
.empty-state { text-align: center; padding: 3rem 1.5rem; }
.empty-state svg { margin: 0 auto 1rem; color: var(--text-muted); opacity: 0.5; }
.empty-state h3 { font-size: 1rem; font-weight: 600; margin-bottom: 0.5rem; }
.empty-state p { font-size: 0.85rem; color: var(--text-secondary); }

/* ── Footer ────────────────────────────────── */
.footer {
    border-top: 1px solid var(--border); padding: 2rem 0;
    margin-top: 3rem;
}
.footer-inner {
    max-width: 1280px; margin: 0 auto; padding: 0 1.5rem;
    display: flex; align-items: center; justify-content: space-between;
}
.footer-text { font-size: 0.8rem; color: var(--text-muted); }
.footer-links { display: flex; gap: 1rem; }
.footer-links a { font-size: 0.8rem; color: var(--text-secondary); }
.footer-links a:hover { color: var(--accent); }

/* ── Responsive ────────────────────────────── */
@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .dash-stats { grid-template-columns: repeat(2, 1fr); }
    .hero-stats { grid-template-columns: 1fr; max-width: 520px; }
    .exchange-callout-grid { grid-template-columns: 1fr; }
    .exchange-card-metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .exchange-card-head { grid-template-columns: 1fr; }
    .exchange-card-action-group { justify-content: flex-start; }
}

@media (max-width: 768px) {
    .navbar-menu { display: none; }
    .nav-hamburger { display: flex; }
    .navbar-menu.open {
        display: flex; flex-direction: column; position: absolute;
        top: var(--nav-height); left: 0; right: 0;
        background: var(--bg-surface); border-bottom: 1px solid var(--border);
        padding: 1rem;
    }
    .mobile-nav { display: flex; }
    .main-content { padding-bottom: calc(var(--mobile-nav-height) + 1rem); }
    .chat-widget { bottom: calc(var(--mobile-nav-height) + 10px); right: 10px; }
    .chat-window { width: calc(100vw - 20px); right: -10px; }
    .hero-title { font-size: 1.8rem; }
    .hero { padding: 4.5rem 1rem 3rem; min-height: auto; }
    .hero-stats { gap: 1rem; }
    .steps-grid { grid-template-columns: 1fr; }
    .grid-2, .grid-3 { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .profile-sections { grid-template-columns: 1fr; }
    .lb-top3 { grid-template-columns: 1fr; }
    .footer-inner { flex-direction: column; gap: 1rem; text-align: center; }
    .notif-panel { width: 100%; border-radius: 0; }
    .user-menu-name { display: none; }
    .glass-card > .flex-between { align-items: flex-start; flex-wrap: wrap; }
    .exchange-toolbar,
    .exchange-card-head { align-items: stretch; }
    .exchange-card-action-group { justify-content: flex-start; }
    .exchange-grid-advanced { grid-template-columns: 1fr; }
    .exchange-card-metrics { grid-template-columns: 1fr; }
    .exchange-card-action-group .btn { width: 100%; justify-content: center; }
    .rh-toast-stack {
        right: 12px;
        left: 12px;
        width: auto;
    }
    .rh-dialog-card { padding: 1rem; border-radius: 20px; }
    .rh-dialog-head { grid-template-columns: 44px 1fr; }
    .rh-dialog-icon { width: 44px; height: 44px; border-radius: 14px; }
    .rh-dialog-actions { flex-direction: column-reverse; }
    .rh-dialog-actions .btn { width: 100%; }
}

@media (max-width: 640px) {
    .hero { padding: 2.5rem 1rem 2rem; }
    .hero-title { font-size: 1.5rem; }
    .container { padding: 0 1rem; }
    .dash-stats { grid-template-columns: 1fr; }
    .exchange-grid { grid-template-columns: 1fr; }
    .hero-stats { grid-template-columns: 1fr; }
}

/* ── Utility ───────────────────────────────── */
.text-accent { color: var(--accent); }
.text-purple { color: var(--purple); }
.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }
.hidden { display: none !important; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }