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

:root {
    --primary-green: #00d26a;
    --dark-bg: #0a0e13;
    --card-bg: #151a21;
    --card-hover: #1a2029;
    --border-color: #252d38;
    --text-primary: #ffffff;
    --text-secondary: #8899a6;
    --text-muted: #5c6773;
    --odd-bg: #1e2530;
    --odd-hover: #252d3a;
    --success: #00d26a;
    --danger: #ff4757;
    --warning: #ffa502;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    background: var(--dark-bg);
    color: var(--text-primary);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    padding-bottom: 70px;
}

/* Header */
.mobile-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 60px;
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    z-index: 1000;
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.logo {
    font-size: 24px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-green), #00ff88);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.5px;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.balance-display {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.balance-label {
    font-size: 10px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.balance-amount {
    font-weight: 700;
    color: var(--primary-green);
    font-size: 16px;
}

.login-btn {
    background: var(--primary-green);
    color: #000;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 700;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
}

.login-btn:hover {
    background: #00ff88;
    transform: translateY(-1px);
}

/* Main Content */
.main-content {
    margin-top: 60px;
    padding-bottom: 20px;
}

/* Sport Tabs */
.sport-tabs {
    position: sticky;
    top: 60px;
    background: var(--dark-bg);
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
    z-index: 999;
    overflow-x: auto;
    white-space: nowrap;
    -webkit-overflow-scrolling: touch;
}

.sport-tabs::-webkit-scrollbar {
    display: none;
}

.sport-tabs-inner {
    display: flex;
    gap: 8px;
    padding: 0 16px;
}

.sport-tab {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 10px 20px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.sport-tab.active {
    background: var(--primary-green);
    color: #000;
    border-color: var(--primary-green);
}

/* Toggle Buttons */
.toggle-container {
    padding: 16px;
    display: flex;
    gap: 8px;
}

.toggle-btn {
    flex: 1;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 12px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.toggle-btn.active {
    background: var(--primary-green);
    color: #000;
    border-color: var(--primary-green);
}

/* Match Cards */
.matches-container {
    padding: 0 16px;
}

.match-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    margin-bottom: 12px;
    overflow: hidden;
    transition: all 0.2s;
}

.match-card:hover {
    border-color: var(--primary-green);
    box-shadow: 0 4px 12px rgba(0, 210, 106, 0.1);
}

.match-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: var(--odd-bg);
    border-bottom: 1px solid var(--border-color);
}

.league-name {
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 500;
}

.match-time {
    font-size: 12px;
    color: var(--primary-green);
    font-weight: 700;
}

.match-teams {
    padding: 16px;
}

.team {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
}

.team-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
}

.team-score {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-green);
    min-width: 30px;
    text-align: right;
}

/* Odds Grid */
.odds-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    padding: 0 16px 16px;
}

.odd-btn {
    background: var(--odd-bg);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 12px 8px;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.odd-btn:hover {
    background: var(--odd-hover);
    border-color: var(--primary-green);
}

.odd-btn.selected {
    background: var(--primary-green);
    border-color: var(--primary-green);
}

.odd-btn.selected .odd-label {
    color: #000;
}

.odd-btn.selected .odd-value {
    color: #000;
}

.odd-btn.suspended {
    opacity: 0.4;
    cursor: not-allowed;
}

.odd-label {
    font-size: 11px;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
}

.odd-value {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-green);
}

/* Bottom Navigation */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60px;
    background: var(--card-bg);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-around;
    align-items: center;
    z-index: 1000;
    box-shadow: 0 -2px 8px rgba(0,0,0,0.3);
}

.nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 8px;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all 0.2s;
    position: relative;
}

.nav-item.active {
    color: var(--primary-green);
}

.nav-icon {
    font-size: 24px;
}

.nav-label {
    font-size: 11px;
    font-weight: 600;
}

.coupon-badge {
    position: absolute;
    top: 4px;
    right: 20%;
    background: var(--danger);
    color: white;
    font-size: 10px;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 10px;
    min-width: 18px;
    text-align: center;
}

/* Coupon Drawer */
.coupon-drawer {
    position: fixed;
    bottom: -100%;
    left: 0;
    right: 0;
    height: 70%;
    background: var(--card-bg);
    border-top-left-radius: 20px;
    border-top-right-radius: 20px;
    transition: bottom 0.3s ease;
    z-index: 2000;
    box-shadow: 0 -4px 20px rgba(0,0,0,0.5);
}

.coupon-drawer.open {
    bottom: 0;
}

.coupon-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.coupon-title {
    font-size: 18px;
    font-weight: 700;
}

.close-coupon {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 28px;
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.coupon-content {
    padding: 20px;
    max-height: calc(70vh - 200px);
    overflow-y: auto;
}

.coupon-footer {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 20px;
    background: var(--odd-bg);
    border-top: 1px solid var(--border-color);
}

.stake-input-group {
    margin-bottom: 16px;
}

.stake-label {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 8px;
    display: block;
}

.stake-input {
    width: 100%;
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    color: var(--text-primary);
    padding: 14px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
}

.potential-win {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding: 12px;
    background: var(--card-bg);
    border-radius: 8px;
}

.potential-label {
    font-size: 14px;
    color: var(--text-muted);
}

.potential-amount {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-green);
}

.place-bet-btn {
    width: 100%;
    background: var(--primary-green);
    color: #000;
    border: none;
    padding: 16px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
}

.place-bet-btn:hover {
    background: #00ff88;
    transform: translateY(-2px);
}

.empty-coupon {
    text-align: center;
    color: var(--text-muted);
    padding: 40px 20px;
}

.loading {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
}

/* Desktop/Tablet Responsive */
@media (min-width: 768px) {
    body {
        padding-bottom: 0;
    }

    .mobile-header {
        height: 70px;
        padding: 0 40px;
    }

    .logo {
        font-size: 28px;
    }

    .main-content {
        margin-top: 70px;
        max-width: 1400px;
        margin-left: auto;
        margin-right: auto;
        padding: 0 40px;
    }

    .sport-tabs {
        top: 70px;
        padding: 16px 0;
    }

    .sport-tabs-inner {
        padding: 0 40px;
        justify-content: center;
    }

    .sport-tab {
        padding: 12px 24px;
        font-size: 15px;
    }

    .toggle-container {
        padding: 20px 40px;
        max-width: 600px;
        margin: 0 auto;
    }

    .matches-container {
        padding: 0 40px;
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(500px, 1fr));
        gap: 20px;
    }

    .match-card {
        margin-bottom: 0;
    }

    .odds-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 12px;
        padding: 0 20px 20px;
    }

    .odd-btn {
        padding: 16px 12px;
    }

    .odd-value {
        font-size: 22px;
    }

    .bottom-nav {
        display: none;
    }

    /* Desktop Coupon - Sidebar */
    .coupon-drawer {
        position: fixed;
        right: -400px;
        left: auto;
        bottom: 0;
        top: 70px;
        width: 400px;
        height: auto;
        border-radius: 0;
        border-left: 1px solid var(--border-color);
        transition: right 0.3s ease;
    }

    .coupon-drawer.open {
        right: 0;
        bottom: 0;
    }

    .coupon-content {
        max-height: calc(100vh - 300px);
    }

    /* Desktop Coupon Toggle Button */
    .desktop-coupon-toggle {
        position: fixed;
        right: 20px;
        bottom: 20px;
        width: 60px;
        height: 60px;
        background: var(--primary-green);
        color: #000;
        border: none;
        border-radius: 50%;
        font-size: 24px;
        font-weight: 700;
        cursor: pointer;
        box-shadow: 0 4px 12px rgba(0, 210, 106, 0.4);
        z-index: 1500;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: all 0.2s;
    }

    .desktop-coupon-toggle:hover {
        transform: scale(1.1);
        box-shadow: 0 6px 16px rgba(0, 210, 106, 0.6);
    }

    .desktop-coupon-toggle .coupon-badge {
        position: absolute;
        top: -5px;
        right: -5px;
    }
}

@media (min-width: 1200px) {
    .matches-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1600px) {
    .matches-container {
        grid-template-columns: repeat(3, 1fr);
    }
}