:root {
    --bg-color: #020617;
    --card-bg: rgba(30, 41, 59, 0.7);
    --card-border: rgba(255, 255, 255, 0.1);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-color: #3b82f6;
    --accent-glow: rgba(59, 130, 246, 0.5);
    --success-color: #10b981;
    --success-glow: rgba(16, 185, 129, 0.5);
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --gradient-bg: radial-gradient(circle at 50% 0%, #1e293b 0%, #020617 100%);
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background: var(--bg-color);
    background-image: var(--gradient-bg);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.5;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 30px 20px;
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--card-border);
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
    text-shadow: 0 0 20px var(--accent-glow);
}

.logo i {
    color: var(--accent-color);
}

.actions {
    display: flex;
    gap: 12px;
}

.btn {
    padding: 10px 24px;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 600;
    font-family: inherit;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95rem;
    backdrop-filter: blur(10px);
}

.btn-primary {
    background: var(--accent-color);
    color: white;
    box-shadow: 0 0 15px var(--accent-glow);
}
.btn-primary:hover {
    background: #2563eb;
    transform: translateY(-1px);
    box-shadow: 0 0 25px var(--accent-glow);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border: 1px solid var(--card-border);
}
.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--text-secondary);
}

.btn-warning {
    background: rgba(245, 158, 11, 0.2);
    color: var(--warning-color);
    border: 1px solid rgba(245, 158, 11, 0.3);
}
.btn-warning:hover {
    background: rgba(245, 158, 11, 0.3);
    box-shadow: 0 0 15px rgba(245, 158, 11, 0.2);
}

.btn-danger {
    background: rgba(239, 68, 68, 0.2);
    color: var(--danger-color);
    border: 1px solid rgba(239, 68, 68, 0.3);
}
.btn-danger:hover {
    background: rgba(239, 68, 68, 0.3);
    box-shadow: 0 0 15px rgba(239, 68, 68, 0.2);
}

/* Stats Bar */
.stats-bar {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.stat-item {
    background: var(--card-bg);
    padding: 20px 25px;
    border-radius: 16px;
    border: 1px solid var(--card-border);
    backdrop-filter: blur(10px);
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-2px);
    border-color: var(--accent-color);
}

.stat-item .label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 8px;
    font-weight: 500;
}

.stat-item .value {
    font-size: 2.2rem;
    font-weight: 700;
    background: linear-gradient(to right, #fff, #94a3b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Grid */
.slots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 20px;
}

.slot-card {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 20px;
    border: 1px solid var(--card-border);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.slot-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
    border-color: var(--accent-color);
}

.slot-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.03), transparent);
    transform: translateX(-100%);
    transition: 0.5s;
}

.slot-card:hover::before {
    transform: translateX(100%);
}

.slot-card.active {
    border-left: 4px solid var(--success-color);
    background: linear-gradient(145deg, rgba(16, 185, 129, 0.05), rgba(30, 41, 59, 0.7));
}

.slot-card.expiring {
    border-left: 4px solid var(--warning-color);
    background: linear-gradient(145deg, rgba(245, 158, 11, 0.05), rgba(30, 41, 59, 0.7));
}

.slot-card.empty {
    border-left: 4px solid var(--text-secondary);
    opacity: 0.6;
}
.slot-card.empty:hover {
    opacity: 1;
}

.slot-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.slot-num {
    font-weight: 700;
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.flag {
    font-size: 1.5rem;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.3));
}

.slot-info {
    margin-bottom: 15px;
}

.location {
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: var(--text-primary);
}

.ip {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-family: 'JetBrains Mono', monospace;
    margin-top: 4px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.exit-ip {
    color: #6ee7b7 !important;
    text-shadow: 0 0 10px rgba(16, 185, 129, 0.3);
}

.slot-status {
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    padding-top: 12px;
    border-top: 1px solid var(--card-border);
}

.active .slot-status { color: var(--success-color); }
.expiring .slot-status { color: var(--warning-color); }
.empty .slot-status { color: var(--text-secondary); }

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    animation: fadeIn 0.2s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background: #1e293b;
    margin: 5% auto;
    padding: 30px;
    border-radius: 20px;
    width: 90%;
    max-width: 550px;
    border: 1px solid var(--card-border);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    position: relative;
    animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.close {
    color: var(--text-secondary);
    position: absolute;
    right: 25px;
    top: 25px;
    font-size: 24px;
    cursor: pointer;
    transition: color 0.2s;
}

.close:hover { color: var(--text-primary); }

h2 {
    margin-bottom: 25px;
    font-size: 1.5rem;
    color: var(--text-primary);
}

.form-group { margin-bottom: 24px; }
.form-group label {
    display: block;
    margin-bottom: 10px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 14px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--card-border);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color 0.2s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.presets {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 10px;
}

.preset-btn {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--card-border);
    color: var(--text-primary);
    padding: 10px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.2s;
    text-align: center;
}

.preset-btn:hover {
    background: rgba(59, 130, 246, 0.1);
    border-color: var(--accent-color);
    color: var(--accent-color);
}

.modal-actions {
    display: flex;
    justify-content: space-between;
    margin-top: 35px;
    padding-top: 25px;
    border-top: 1px solid var(--card-border);
}

/* Toast */
.toast {
    visibility: hidden;
    min-width: 300px;
    background-color: rgba(30, 41, 59, 0.9);
    color: #fff;
    text-align: center;
    border-radius: 12px;
    padding: 16px 24px;
    position: fixed;
    z-index: 2000;
    left: 50%;
    bottom: 40px;
    transform: translateX(-50%);
    font-weight: 500;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    border: 1px solid var(--card-border);
    backdrop-filter: blur(10px);
}

.toast.show {
    visibility: visible;
    animation: fadein 0.3s cubic-bezier(0.4, 0, 0.2, 1), fadeout 0.3s 2.7s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes fadein { from {bottom: 0; opacity: 0;} to {bottom: 40px; opacity: 1;} }
@keyframes fadeout { from {bottom: 40px; opacity: 1;} to {bottom: 0; opacity: 0;} }

.loading, .error {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.02);
    border-radius: 16px;
    border: 1px dashed var(--card-border);
}

.error {
    color: var(--danger-color);
    background: rgba(239, 68, 68, 0.05);
    border-color: rgba(239, 68, 68, 0.2);
}