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

:root {
    --primary-color: #2196F3;
    --primary-dark: #1976D2;
    --secondary-color: #667eea;
    --text-color: #333;
    --text-light: #666;
    --border-color: #e0e0e0;
    --success-color: #4CAF50;
    --danger-color: #f44336;
    --background: #f5f7fa;
    --card-bg: #ffffff;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background: var(--background);
    min-height: 100vh;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
}

/* Header Styles */
header {
    text-align: center;
    padding: 40px 20px;
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--primary-color) 100%);
    color: white;
    border-radius: 15px;
    margin-bottom: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    font-weight: 700;
}

.subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* Card Styles */
.card {
    background: var(--card-bg);
    border-radius: 15px;
    padding: 30px;
    margin-bottom: 25px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.card h2 {
    color: var(--text-color);
    margin-bottom: 20px;
    font-size: 1.8rem;
    border-bottom: 3px solid var(--primary-color);
    padding-bottom: 10px;
}

.card ul {
    list-style: none;
    padding-left: 0;
}

.card li {
    padding: 10px 0;
    font-size: 1.1rem;
}

.card ol {
    padding-left: 20px;
}

.card ol li {
    padding: 8px 0;
}

/* Info Grid */
.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.info-item {
    padding: 15px;
    background: var(--background);
    border-radius: 10px;
    border-left: 4px solid var(--primary-color);
}

.info-item strong {
    display: block;
    margin-bottom: 5px;
    color: var(--text-color);
}

.info-item span {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* Install Container */
#install-container {
    text-align: center;
    padding: 20px;
}

#install-status {
    margin-bottom: 15px;
    font-size: 1.1rem;
    color: var(--text-light);
}

/* Buttons */
button {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 25px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
}

button:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(33, 150, 243, 0.3);
}

button:active {
    transform: translateY(0);
}

#install-button {
    background: var(--success-color);
    /* font-size: 18px; */
    /* padding: 15px 30px; */
}

#install-button:hover {
    background: #45a049;
}

/* Joke Box */
.joke-box {
    background: linear-gradient(135deg, #ffeaa7 0%, #fdcb6e 100%);
    padding: 25px;
    border-radius: 12px;
    margin: 20px 0;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.joke-box p {
    margin: 10px 0;
    color: #2d3436;
    font-size: 1.05rem;
}

.joke-box strong {
    color: #2d3436;
    font-size: 1.1rem;
}

/* Footer */
footer {
    text-align: center;
    padding: 30px 20px;
    color: var(--text-light);
    margin-top: 40px;
    border-top: 2px solid var(--border-color);
}

/* Online Status Indicator */
#online-status {
    font-weight: 600;
}

/* Responsive Design */
@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }

    .subtitle {
        font-size: 1rem;
    }

    .card {
        padding: 20px;
    }

    .card h2 {
        font-size: 1.5rem;
    }

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

    button {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 10px;
    }

    header {
        padding: 30px 15px;
    }

    header h1 {
        font-size: 1.7rem;
    }

    .card {
        padding: 15px;
    }

    .joke-box {
        padding: 15px;
    }
}

/* Animation for cards */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card {
    animation: fadeInUp 0.6s ease-out;
}

/* Loading states */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}