/* ===== CSS Variables & Themes ===== */
:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #1a1a1a;
    --bg-card: #141414;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --accent: #76b900;
    --accent-hover: #8dd100;
    --danger: #ff4444;
    --warning: #ffaa00;
    --success: #00cc66;
    --border: #333;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

[data-theme="light"] {
    --bg-primary: #f5f5f5;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --border: #ddd;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

/* ===== Base Styles ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    transition: background 0.3s, color 0.3s;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 20px;
}

.hidden {
    display: none !important;
}

/* ===== Header ===== */
header {
    text-align: center;
    padding: 30px 0;
    border-bottom: 1px solid var(--border);
    margin-bottom: 30px;
}

header h1 {
    font-size: 2.5rem;
    background: linear-gradient(135deg, var(--accent), #00d4ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.header-controls {
    margin-top: 20px;
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}

.btn-icon {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    color: var(--text-primary);
    font-size: 1.2rem;
    padding: 8px 12px;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-icon:hover {
    background: var(--accent);
    border-color: var(--accent);
    transform: scale(1.05);
}

.btn-icon.active {
    background: var(--accent);
    border-color: var(--accent);
}

/* ===== Statistics Dashboard ===== */
.stats-dashboard {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
    margin-bottom: 25px;
}

.stat-box {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 15px;
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--accent);
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
}

/* ===== Cards Grid ===== */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.card {
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: 16px;
    padding: 25px;
    box-shadow: var(--shadow);
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.card.disabled {
    opacity: 0.4;
    pointer-events: none;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--border);
    transition: background 0.3s;
}

.card.available::before {
    background: var(--success);
    animation: pulse-green 1s infinite;
}

.card.error::before {
    background: var(--danger);
}

.card.available {
    border-color: var(--success);
    animation: glow 1s infinite alternate;
}

@keyframes glow {
    from {
        box-shadow: 0 0 20px rgba(0, 204, 102, 0.3);
    }

    to {
        box-shadow: 0 0 40px rgba(0, 204, 102, 0.6);
    }
}

@keyframes pulse-green {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

/* ===== Card Toggle ===== */
.card-toggle {
    position: relative;
    display: inline-block;
    width: 36px;
    height: 20px;
    margin-right: 10px;
}

.card-toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--border);
    transition: 0.3s;
    border-radius: 20px;
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 14px;
    width: 14px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: 0.3s;
    border-radius: 50%;
}

.card-toggle input:checked+.toggle-slider {
    background-color: var(--accent);
}

.card-toggle input:checked+.toggle-slider:before {
    transform: translateX(16px);
}

.card-header {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.card-header h2 {
    font-size: 1.3rem;
    color: var(--text-primary);
    flex-grow: 1;
}

.api-badge {
    font-size: 0.7rem;
    padding: 4px 8px;
    border-radius: 20px;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

.api-badge.ok {
    background: rgba(0, 204, 102, 0.2);
    color: var(--success);
    border-color: var(--success);
}

.api-badge.error {
    background: rgba(255, 68, 68, 0.2);
    color: var(--danger);
    border-color: var(--danger);
}

.card-status {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.1rem;
    margin-bottom: 15px;
}

.status-icon {
    font-size: 1.8rem;
}

.card-price {
    font-size: 1.4rem;
    font-weight: bold;
    color: var(--accent);
    margin-bottom: 10px;
}

.card-sku {
    font-size: 0.7rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
    padding: 6px 8px;
    background: var(--bg-secondary);
    border-radius: 6px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.card-sku code {
    font-family: 'Consolas', monospace;
    color: var(--accent);
    background: var(--bg-primary);
    padding: 2px 5px;
    border-radius: 4px;
    font-size: 0.65rem;
}

.api-link {
    text-decoration: none;
    font-size: 0.9rem;
    margin-left: auto;
    opacity: 0.7;
    transition: opacity 0.2s;
}

.api-link:hover {
    opacity: 1;
}

.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.last-check {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.buy-btn {
    background: var(--accent);
    color: #000;
    padding: 8px 16px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
    font-size: 0.9rem;
    transition: all 0.2s;
}

.buy-btn:hover {
    background: var(--accent-hover);
    transform: scale(1.05);
}

/* ===== Control Panel ===== */
.control-panel {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 20px;
}

.heartbeat-section {
    display: flex;
    align-items: center;
    gap: 10px;
}

.heartbeat-icon {
    font-size: 1.3rem;
    animation: heartbeat 1s infinite;
}

@keyframes heartbeat {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.2);
    }
}

.interval-section {
    display: flex;
    align-items: center;
    gap: 10px;
}

.interval-section select {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border);
    padding: 6px 12px;
    border-radius: 8px;
    font-size: 0.9rem;
}

/* ===== Telegram Panel ===== */
.telegram-panel {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
}

.telegram-panel h3 {
    margin-bottom: 10px;
}

.telegram-info {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 15px;
}

.telegram-info a {
    color: var(--accent);
}

.telegram-form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.form-group label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.form-group input {
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 10px 12px;
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.telegram-buttons {
    display: flex;
    gap: 10px;
    margin-top: 5px;
}

.btn-primary,
.btn-secondary,
.btn-danger {
    padding: 8px 16px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.2s;
}

.btn-primary {
    background: var(--accent);
    color: #000;
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-danger {
    background: var(--danger);
    color: white;
}

.btn-primary:hover,
.btn-secondary:hover,
.btn-danger:hover {
    transform: scale(1.02);
    opacity: 0.9;
}

.telegram-status {
    font-size: 0.85rem;
    padding: 8px;
    border-radius: 6px;
    margin-top: 5px;
}

.telegram-status.success {
    background: rgba(0, 204, 102, 0.2);
    color: var(--success);
}

.telegram-status.error {
    background: rgba(255, 68, 68, 0.2);
    color: var(--danger);
}

/* ===== Log Section ===== */
.log-section {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
}

.log-section h3 {
    margin-bottom: 15px;
}

.log-container {
    max-height: 150px;
    overflow-y: auto;
    font-family: 'Consolas', monospace;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.log-entry {
    padding: 4px 0;
    border-bottom: 1px solid var(--border);
}

.log-entry:last-child {
    border-bottom: none;
}

.log-entry.success {
    color: var(--success);
}

.log-entry.error {
    color: var(--danger);
}

.log-entry.warning {
    color: var(--warning);
}

/* ===== Footer ===== */
footer {
    text-align: center;
    padding: 25px 0;
    color: var(--text-secondary);
    border-top: 1px solid var(--border);
    margin-top: 25px;
    font-size: 0.9rem;
}

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

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

/* ===== Mobile Responsive ===== */
@media (max-width: 600px) {
    header h1 {
        font-size: 1.6rem;
    }

    .stats-dashboard {
        grid-template-columns: repeat(2, 1fr);
    }

    .control-panel {
        flex-direction: column;
        text-align: center;
    }

    .header-controls {
        gap: 8px;
    }

    .btn-icon {
        padding: 6px 10px;
        font-size: 1rem;
    }
}