:root {
    --bg: #0a0a14;
    --cyan: #00f5ff;
    --yellow: #ffe033;
    --card-bg: #151520;
    --border: #2a2a3a;
    --text: #e0e0e0;
    --text-muted: #8a8a9a;
}

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

body {
    font-family: 'IBM Plex Sans', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

h1, h2 {
    font-family: 'Bebas Neue', cursive;
    letter-spacing: 1.5px;
}

h1 {
    font-size: 3rem;
    color: var(--cyan);
    margin-bottom: 0.5rem;
}

h2 {
    font-size: 2rem;
    color: var(--yellow);
    margin-bottom: 1.5rem;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
}

header {
    text-align: center;
    padding: 2rem 0 3rem;
}

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

main {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

section {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.stat-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.5rem;
    text-align: center;
    transition: transform 0.2s, border-color 0.2s;
}

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

.stat-value {
    font-family: 'Bebas Neue', cursive;
    font-size: 2.5rem;
    color: var(--cyan);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text);
    font-weight: 500;
}

input, select {
    width: 100%;
    padding: 0.875rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font-family: 'IBM Plex Sans', sans-serif;
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

input:focus, select:focus {
    outline: none;
    border-color: var(--cyan);
    box-shadow: 0 0 0 3px rgba(0, 245, 255, 0.1);
}

input::placeholder {
    color: var(--text-muted);
}

.btn-primary {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, var(--cyan), #0088ff);
    border: none;
    border-radius: 6px;
    color: var(--bg);
    font-family: 'Bebas Neue', cursive;
    font-size: 1.3rem;
    letter-spacing: 1px;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 245, 255, 0.3);
}

.btn-primary:active {
    transform: translateY(0);
}

.activity-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.activity-item {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.activity-info {
    flex: 1;
}

.activity-name {
    font-weight: 600;
    color: var(--text);
    margin-bottom: 0.25rem;
}

.activity-platform {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.activity-time {
    color: var(--cyan);
    font-size: 0.85rem;
    white-space: nowrap;
}

.empty-state {
    text-align: center;
    color: var(--text-muted);
    padding: 2rem;
    font-style: italic;
}

.notification {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--card-bg);
    border: 1px solid var(--cyan);
    border-radius: 8px;
    padding: 1rem 1.5rem;
    color: var(--text);
    box-shadow: 0 8px 24px rgba(0, 245, 255, 0.2);
    transform: translateY(150%);
    transition: transform 0.3s ease;
    z-index: 1000;
}

.notification.show {
    transform: translateY(0);
}

.notification.success {
    border-color: var(--cyan);
}

.notification.error {
    border-color: #ff3366;
}

footer {
    text-align: center;
    padding: 3rem 0 2rem;
    color: var(--text-muted);
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 1.6rem;
    }

    section {
        padding: 1.5rem;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .activity-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .notification {
        right: 1rem;
        left: 1rem;
        bottom: 1rem;
    }
}