:root {
    --primary: #6366f1; --primary-dark: #4f46e5; --primary-light: #818cf8;
    --success: #22c55e; --danger: #ef4444; --warning: #f59e0b;
    --bg-primary: #0f172a; --bg-secondary: #1e293b; --bg-card: #1e293b;
    --text-primary: #f8fafc; --text-secondary: #94a3b8; --text-muted: #64748b;
    --border-color: #334155; --border-radius: 12px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Inter', sans-serif; background: var(--bg-primary); color: var(--text-primary); line-height: 1.6; min-height: 100vh; }

/* Prevent translation flash on load */
body.i18n-loading [data-i18n] { opacity: 0; }
body:not(.i18n-loading) [data-i18n] { opacity: 1; transition: opacity 0.15s ease-in; }

a { color: var(--primary-light); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--primary); }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 10px 20px; font-size: 14px; font-weight: 500; border-radius: 8px; border: none; cursor: pointer; transition: all 0.2s; text-decoration: none; }
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-dark); color: white; }
.btn-outline { background: transparent; border: 1px solid var(--border-color); color: var(--text-primary); }
.btn-outline:hover { background: var(--bg-secondary); border-color: var(--primary); }
.btn-white { background: white; color: var(--primary); }
.btn-sm { padding: 6px 12px; font-size: 12px; }
.btn-lg { padding: 14px 28px; font-size: 16px; }
.btn-block { width: 100%; }

/* Header */
.header { position: fixed; top: 0; left: 0; right: 0; z-index: 100; background: rgba(15, 23, 42, 0.95); backdrop-filter: blur(10px); border-bottom: 1px solid var(--border-color); transition: all 0.3s ease; }
.header.scrolled { background: rgba(15, 23, 42, 0.98); box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2); }
.header.hidden { transform: translateY(-100%); }
.header-container { display: flex; align-items: center; justify-content: space-between; height: 70px; max-width: 1400px; }

/* Logo */
.logo { display: flex; align-items: baseline; gap: 0; font-size: 24px; font-weight: 700; color: var(--text-primary); letter-spacing: 2px; transition: all 0.2s; flex-shrink: 0; }
.logo:hover { color: var(--primary-light); }
.logo-icon { width: 22px; height: 22px; vertical-align: baseline; margin-bottom: -2px; margin-right: 4px; }

/* Navigation */
.nav { display: flex; align-items: center; gap: 8px; justify-content: center; }

/* Header Right */
.header-right { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.nav-link { color: var(--text-secondary); font-size: 14px; font-weight: 500; padding: 8px 14px; border-radius: 8px; transition: all 0.2s; position: relative; white-space: nowrap; }
.nav-link:hover { color: var(--text-primary); background: rgba(99, 102, 241, 0.1); }
.nav-link.active { color: var(--primary); background: rgba(99, 102, 241, 0.1); }
.nav-link.active::after { content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%); width: 20px; height: 2px; background: var(--primary); border-radius: 2px; }
.nav-divider { width: 1px; height: 24px; background: var(--border-color); margin: 0 12px; }

/* Language Dropdown */
.language-dropdown { position: relative; }
.lang-dropdown-btn { display: flex; align-items: center; gap: 6px; background: var(--bg-secondary); border: 1px solid var(--border-color); color: var(--text-secondary); font-size: 13px; font-weight: 500; padding: 8px 12px; border-radius: 8px; cursor: pointer; transition: all 0.2s; }
.lang-dropdown-btn:hover { color: var(--text-primary); border-color: var(--primary); background: rgba(99, 102, 241, 0.05); }
.lang-dropdown-btn svg { opacity: 0.7; }
.lang-dropdown-btn #currentLang { font-weight: 600; min-width: 20px; }
.lang-menu { position: absolute; top: calc(100% + 8px); right: 0; background: white; border: 1px solid var(--border-color); border-radius: 12px; box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1); min-width: 160px; opacity: 0; visibility: hidden; transform: translateY(-10px); transition: all 0.2s ease; z-index: 1000; }
.lang-menu.show { opacity: 1; visibility: visible; transform: translateY(0); }
.lang-menu-item { display: flex; align-items: center; gap: 10px; width: 100%; padding: 10px 16px; background: none; border: none; color: #1e293b; font-size: 14px; font-weight: 500; text-align: left; cursor: pointer; transition: all 0.2s; }
.lang-menu-item:first-child { border-radius: 12px 12px 0 0; }
.lang-menu-item:last-child { border-radius: 0 0 12px 12px; }
.lang-menu-item:hover { background: #f8fafc; color: var(--primary); }
.lang-flag { font-size: 18px; }

/* User Menu */
.user-menu { display: flex; align-items: center; gap: 12px; }
.balance-badge { display: flex; align-items: center; gap: 6px; padding: 8px 14px; background: rgba(16, 185, 129, 0.1); border: 1px solid rgba(16, 185, 129, 0.2); border-radius: 20px; font-size: 14px; font-weight: 600; color: #10b981; cursor: pointer; transition: all 0.2s; text-decoration: none; }
.balance-badge:hover { background: rgba(16, 185, 129, 0.15); border-color: rgba(16, 185, 129, 0.3); transform: translateY(-1px); }
.balance-icon { font-size: 16px; }
.balance-amount { color: #10b981; font-size: 14px; font-weight: 700; }

/* User Dropdown */
.user-dropdown { position: relative; }
.user-btn { display: flex; align-items: center; gap: 8px; padding: 6px 12px; background: var(--bg-secondary); border: 1px solid var(--border-color); border-radius: 20px; cursor: pointer; transition: all 0.2s; color: var(--text-primary); }
.user-btn:hover { border-color: var(--primary); background: rgba(99, 102, 241, 0.05); }
.user-avatar { width: 28px; height: 28px; border-radius: 50%; background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%); display: flex; align-items: center; justify-content: center; color: white; font-size: 12px; font-weight: 600; }
.user-name { font-size: 13px; font-weight: 500; max-width: 100px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.user-balance { font-size: 13px; font-weight: 600; color: #10b981; }
.dropdown-icon { transition: transform 0.2s; }
.user-btn:hover .dropdown-icon { transform: translateY(1px); }

/* Dropdown Menu */
.user-dropdown-menu { position: absolute; top: calc(100% + 8px); right: 0; min-width: 180px; background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 12px; box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3); opacity: 0; visibility: hidden; transform: translateY(-10px); transition: all 0.2s; }
.user-dropdown-menu.active { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown-item { display: flex; align-items: center; gap: 10px; padding: 10px 16px; color: var(--text-secondary); font-size: 14px; border: none; background: none; width: 100%; text-align: left; cursor: pointer; transition: all 0.2s; }
.dropdown-item:hover { background: rgba(99, 102, 241, 0.1); color: var(--text-primary); }
.dropdown-item svg { width: 16px; height: 16px; }
.dropdown-divider { height: 1px; background: var(--border-color); margin: 4px 0; }

/* Mobile Menu */
.mobile-menu-btn { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 8px; }
.mobile-menu-btn span { width: 24px; height: 2px; background: var(--text-primary); transition: all 0.3s; }
.mobile-menu-btn.active span:nth-child(1) { transform: rotate(45deg) translateY(7px); }
.mobile-menu-btn.active span:nth-child(2) { opacity: 0; }
.mobile-menu-btn.active span:nth-child(3) { transform: rotate(-45deg) translateY(-7px); }

/* Responsive */
@media (max-width: 900px) {
    .nav { display: none; }
    .mobile-menu-btn { display: flex; }
    .header-right .language-dropdown { display: none; }
    .header-right .user-menu { display: none; }
}
@media (max-width: 768px) {
    .nav { position: fixed; top: 70px; left: 0; right: 0; background: var(--bg-primary); border-top: 1px solid var(--border-color); flex-direction: column; align-items: stretch; padding: 20px; gap: 8px; opacity: 0; visibility: hidden; transform: translateY(-20px); transition: all 0.3s; display: flex; }
    .nav.active { opacity: 1; visibility: visible; transform: translateY(0); }
    .nav-link { padding: 12px 16px; }
    .mobile-menu-btn { display: flex; }
}

/* Hero */
.hero { padding: 180px 0 100px; text-align: center; background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%); }
.hero h1 { font-size: 56px; font-weight: 700; margin-bottom: 16px; background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary-light) 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-subtitle { font-size: 24px; color: var(--text-secondary); margin-bottom: 8px; }
.hero-desc { font-size: 16px; color: var(--text-muted); margin-bottom: 40px; }
.hero-buttons { display: flex; gap: 16px; justify-content: center; }

/* Services */
.services { padding: 100px 0; }
.section-title { font-size: 36px; text-align: center; margin-bottom: 12px; }
.section-desc { text-align: center; color: var(--text-secondary); margin-bottom: 60px; }
.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; }
.service-card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--border-radius); padding: 32px; text-align: center; transition: all 0.3s; cursor: pointer; text-decoration: none; color: var(--text-primary); display: block; }
.service-card:hover { border-color: var(--primary); transform: translateY(-4px); box-shadow: 0 8px 24px rgba(99, 102, 241, 0.2); }
.service-card-disabled { cursor: not-allowed; opacity: 0.7; }
.service-card-disabled:hover { transform: none; border-color: var(--border-color); box-shadow: none; }
.service-icon { font-size: 48px; margin-bottom: 16px; }
.service-card h3 { font-size: 20px; margin-bottom: 12px; color: var(--text-primary); }
.service-card p { color: var(--text-secondary); font-size: 14px; margin-bottom: 0; }
.badge { display: inline-block; padding: 4px 12px; font-size: 12px; font-weight: 500; border-radius: 20px; background: var(--primary); color: white; }
.badge-deposit { background: var(--success); }
.badge-charge { background: var(--danger); }
.badge-refund { background: var(--warning); }
.badge-warning { background: #f59e0b; }
.badge-info { background: #3b82f6; }
.badge-success { background: var(--success); }
.badge-danger { background: var(--danger); }

/* Features */
.features { padding: 100px 0; background: var(--bg-secondary); }
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 40px; margin-top: 60px; }
.feature { text-align: center; }
.feature-icon { font-size: 36px; margin-bottom: 16px; }
.feature h4 { font-size: 16px; margin-bottom: 8px; }
.feature p { color: var(--text-secondary); font-size: 14px; }

/* Footer */
.footer { padding: 60px 0 30px; border-top: 1px solid var(--border-color); }
.footer-content { display: flex; justify-content: space-between; align-items: center; margin-bottom: 40px; }
.footer-brand p { color: var(--text-secondary); font-size: 14px; margin-top: 8px; }
.footer-links { display: flex; gap: 30px; }
.footer-links a { color: var(--text-secondary); font-size: 14px; }
.footer-bottom { text-align: center; padding-top: 30px; border-top: 1px solid var(--border-color); }
.footer-bottom p { color: var(--text-muted); font-size: 14px; }

/* Modal */
.modal { display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.8); z-index: 1000; align-items: center; justify-content: center; }
.modal.active { display: flex; }
.modal-content { background: var(--bg-card); border-radius: var(--border-radius); padding: 40px; width: 100%; max-width: 400px; position: relative; border: 1px solid var(--border-color); }
.modal-content h2 { text-align: center; margin-bottom: 30px; }
.modal-close { position: absolute; top: 16px; right: 16px; background: none; border: none; color: var(--text-secondary); font-size: 28px; cursor: pointer; }
.modal-footer-text { text-align: center; margin-top: 20px; color: var(--text-secondary); font-size: 14px; }

/* Forms */
.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 8px; font-size: 14px; font-weight: 500; color: var(--text-secondary); }
.form-group input { width: 100%; padding: 12px 16px; font-size: 14px; border: 1px solid var(--border-color); border-radius: 8px; background: var(--bg-primary); color: var(--text-primary); }
.form-group input:focus { outline: none; border-color: var(--primary); }
.form-group input:disabled { opacity: 0.6; }
.form-error { color: var(--danger); font-size: 14px; margin-bottom: 16px; min-height: 20px; }
.form-success { color: var(--success); font-size: 14px; margin-bottom: 16px; min-height: 20px; }

/* Dashboard */
.dashboard-body { display: flex; min-height: 100vh; padding-top: 70px; }
.sidebar { width: 260px; background: var(--bg-secondary); border-right: 1px solid var(--border-color); display: flex; flex-direction: column; position: fixed; top: 70px; left: 0; bottom: 0; }
.sidebar-header { padding: 24px; border-bottom: 1px solid var(--border-color); }
.sidebar-nav { flex: 1; padding: 24px 16px; }
.nav-item { display: flex; align-items: center; gap: 12px; padding: 12px 16px; color: var(--text-secondary); border-radius: 8px; margin-bottom: 4px; transition: all 0.2s; }
.nav-item:hover { background: var(--bg-primary); color: var(--text-primary); }
.nav-item.active { background: var(--primary); color: white; }
.nav-icon { font-size: 18px; }
.sidebar-footer { padding: 24px; border-top: 1px solid var(--border-color); }
.user-email { font-size: 14px; color: var(--text-secondary); }
.dashboard-main { flex: 1; margin-left: 260px; padding: 40px; }
.dashboard-section { display: none; }
.dashboard-section.active { display: block; }
.section-header { margin-bottom: 30px; }
.section-header h1 { font-size: 28px; }

/* Stats */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 24px; margin-bottom: 30px; }
.stat-card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--border-radius); padding: 24px; display: flex; align-items: center; gap: 16px; }
.stat-card.primary { background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%); border: none; }
.stat-icon { font-size: 32px; }
.stat-content { flex: 1; }
.stat-label { display: block; font-size: 14px; color: var(--text-secondary); margin-bottom: 4px; }
.stat-card.primary .stat-label { color: rgba(255,255,255,0.8); }
.stat-value { display: block; font-size: 24px; font-weight: 600; }

/* Cards */
.card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--border-radius); margin-bottom: 24px; }
.card-header { padding: 20px 24px; border-bottom: 1px solid var(--border-color); display: flex; justify-content: space-between; align-items: center; }
.card-header h3 { font-size: 16px; font-weight: 600; }
.card-body { padding: 24px; }

/* Tables */
.table { width: 100%; border-collapse: collapse; }
.table th, .table td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--border-color); }
.table th { font-size: 12px; font-weight: 600; color: var(--text-secondary); text-transform: uppercase; }
.table td { font-size: 14px; }
.table tbody tr:hover { background: var(--bg-primary); }
.text-green { color: var(--success); }
.text-red { color: var(--danger); }
.empty-state { text-align: center; color: var(--text-muted); padding: 40px 20px; }

/* Deposit */
.deposit-form { max-width: 750px; margin: 0 auto; }
.deposit-info { text-align: center; color: var(--text-secondary); margin-bottom: 30px; }
.amount-buttons { display: flex; gap: 10px; margin-bottom: 24px; flex-wrap: wrap; }
.amount-btn { flex: 1; min-width: 60px; padding: 12px; background: var(--bg-primary); border: 1px solid var(--border-color); border-radius: 8px; color: var(--text-primary); font-size: 14px; font-weight: 500; cursor: pointer; }
.amount-btn:hover { border-color: var(--primary); background: var(--primary); }
.deposit-note { text-align: center; color: var(--text-muted); font-size: 12px; margin-top: 20px; }

/* Services List */
.services-list { display: flex; flex-direction: column; gap: 16px; }
.service-item { display: flex; align-items: center; gap: 20px; background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--border-radius); padding: 24px; }
.service-item:not(.disabled):hover { border-color: var(--primary); }
.service-item.disabled { opacity: 0.6; }
.service-item .service-icon { font-size: 32px; margin: 0; }
.service-item .service-info { flex: 1; }
.service-item .service-info h3 { font-size: 18px; margin-bottom: 4px; }
.service-item .service-info p { color: var(--text-secondary); font-size: 14px; margin: 0; }

/* Quick Actions Grid */
.quick-actions-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 16px; }
.quick-action-item { display: flex; flex-direction: column; align-items: center; gap: 10px; padding: 20px 16px; background: var(--bg-primary); border: 1px solid var(--border-color); border-radius: var(--border-radius); text-decoration: none; color: var(--text-primary); transition: all 0.2s ease; }
.quick-action-item:hover { border-color: var(--primary); background: var(--bg-secondary); transform: translateY(-2px); }
.quick-action-icon { font-size: 28px; }
.quick-action-label { font-size: 14px; font-weight: 500; text-align: center; }

/* Code */
.code-block { background: var(--bg-primary); border: 1px solid var(--border-color); border-radius: 8px; padding: 16px; font-family: monospace; font-size: 13px; overflow-x: auto; color: var(--text-secondary); }

/* Referral */
.referral-code-box { display: flex; gap: 12px; margin-bottom: 24px; }
.referral-code-box input { flex: 1; padding: 12px 16px; font-size: 14px; border: 1px solid var(--border-color); border-radius: 8px; background: var(--bg-primary); color: var(--text-primary); }
.referral-stats { display: flex; gap: 40px; justify-content: center; margin-top: 30px; }
.referral-stat { text-align: center; }
.referral-stat-value { display: block; font-size: 32px; font-weight: 700; color: var(--primary-light); margin-bottom: 8px; }
.referral-stat-label { display: block; font-size: 14px; color: var(--text-secondary); }

/* Responsive */
@media (max-width: 768px) {
    .nav { display: none; }
    .mobile-menu-btn { display: flex; }
    .hero h1 { font-size: 36px; }
    .hero-buttons { flex-direction: column; }
    .footer-content { flex-direction: column; gap: 30px; text-align: center; }
    .sidebar { transform: translateX(-100%); }
    .sidebar.open { transform: translateX(0); }
    .dashboard-main { margin-left: 0; padding: 20px; }
}