/**
 * Clock7 Countdowns - Main Stylesheet
 * Beautiful, modern, fully responsive
 */

/* ==================== RESET & BASE ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #4A90E2;
    --primary-hover: #357ABD;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --light-bg: #f8f9fa;
    --dark-bg: #343a40;
    --border-color: #dee2e6;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --shadow: 0 2px 10px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.15);
}

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

/* ==================== HEADER ==================== */
.header {
    background: white;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
}

.logo svg {
    stroke: var(--primary-color);
}

.nav {
    display: flex;
    gap: 1.5rem;
}

.nav a {
    color: var(--text-primary);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    transition: all 0.2s;
}

.nav a:hover, .nav a.active {
    background: var(--primary-color);
    color: white;
}

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

/* ==================== HERO ==================== */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 3rem 0;
    text-align: center;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

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

/* ==================== LAYOUT ==================== */
.content-wrapper {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
    margin: 2rem 0;
}

/* ==================== CARDS ==================== */
.card {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: var(--shadow);
}

.card h2 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

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

/* ==================== FORMS ==================== */
.countdown-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-group label {
    font-weight: 600;
    color: var(--text-primary);
}

.form-control {
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
}

textarea.form-control {
    resize: vertical;
    font-family: inherit;
}

/* ==================== CHECKBOXES ==================== */
.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    padding: 0.5rem 0;
}

.checkbox-label input[type="checkbox"] {
    width: 1.2rem;
    height: 1.2rem;
    cursor: pointer;
}

/* ==================== BUTTONS ==================== */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

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

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

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

.btn-secondary:hover {
    background: #5a6268;
}

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

.btn-danger:hover {
    background: #c82333;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

.btn-block {
    width: 100%;
}

/* ==================== THEME GRID ==================== */
.theme-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 1rem;
}

.theme-card {
    cursor: pointer;
    border: 3px solid transparent;
    border-radius: 10px;
    overflow: hidden;
    transition: all 0.2s;
}

.theme-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}

.theme-card.selected {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.2);
}

.theme-preview {
    height: 120px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem;
}

.theme-sample-title {
    font-size: 0.9rem;
    font-weight: 600;
}

.theme-sample-time {
    font-size: 1.5rem;
    font-weight: bold;
}

.theme-sample-label {
    font-size: 0.75rem;
    opacity: 0.8;
}

.theme-name {
    padding: 0.75rem;
    text-align: center;
    background: white;
    font-weight: 600;
    font-size: 0.9rem;
}

/* ==================== RECENT COUNTDOWNS ==================== */
.recent-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1rem;
}

.countdown-card {
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: transform 0.2s;
}

.countdown-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.countdown-card-title {
    font-size: 1.2rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.countdown-card-date {
    font-size: 0.9rem;
    margin-bottom: 1rem;
    opacity: 0.9;
}

.relative-time {
    font-size: 0.85rem;
    margin-top: 0.25rem;
}

.countdown-card-actions {
    display: flex;
    gap: 0.5rem;
}

/* ==================== EMPTY STATE ==================== */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem 1rem;
    text-align: center;
    color: var(--text-secondary);
}

.empty-state svg {
    opacity: 0.3;
    margin-bottom: 1rem;
}

.empty-state p {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.empty-state small {
    font-size: 0.9rem;
}

/* ==================== FEATURES CARD ==================== */
.features-card {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: var(--shadow);
    margin-top: 2rem;
}

.features-card h3 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.features-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.features-list li {
    padding-left: 0;
    color: var(--text-secondary);
}

/* ==================== NOTIFICATIONS ==================== */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 1rem 1.5rem;
    background: var(--primary-color);
    color: white;
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    z-index: 10000;
    transform: translateX(400px);
    opacity: 0;
    transition: all 0.3s;
}

.notification.show {
    transform: translateX(0);
    opacity: 1;
}

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

.notification-error {
    background: var(--danger-color);
}

.notification-warning {
    background: var(--warning-color);
}

/* ==================== FOOTER ==================== */
.footer {
    background: var(--dark-bg);
    color: white;
    padding: 2rem 0;
    margin-top: 4rem;
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 1rem;
}

.footer-links a {
    color: white;
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.2s;
}

.footer-links a:hover {
    opacity: 1;
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 768px) {
    .content-wrapper {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .theme-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }
    
    .nav {
        gap: 0.5rem;
    }
    
    .nav a {
        padding: 0.5rem;
        font-size: 0.9rem;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .notification {
        right: 10px;
        left: 10px;
        max-width: calc(100% - 20px);
    }
}

@media (max-width: 480px) {
    .theme-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero h1 {
        font-size: 1.5rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 0.5rem;
    }
}