/* Global Variables and Dark Mode */
:root {
    --bg-color: #ffffff;
    --text-color: #333333;
    --secondary-bg: #f8f9fa;
    --border-color: #dddddd;
    --primary-color: #007bff;
    --hover-color: #0056b3;
    --font-family: 'Arial', sans-serif;
}

body.dark-mode {
    --bg-color: #121212;
    --text-color: #e0e0e0;
    --secondary-bg: #1e1e1e;
    --border-color: #444444;
    --primary-color: #4da6ff;
    --hover-color: #3392ff;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color 0.3s, color 0.3s;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Header Styles */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

h1 {
    font-size: 2em;
    color: var(--text-color);
}

/* Dark Mode Toggle */
.dark-mode-toggle {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 10px 15px;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.dark-mode-toggle:hover {
    background-color: var(--hover-color);
}

/* Settings Container */
.settings-container {
    background: var(--secondary-bg);
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.settings-grid {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 15px;
    align-items: center;
}

.target-timezones {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
}

/* Form Elements */
select, input {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: border-color 0.3s;
}

select:focus, input:focus {
    outline: none;
    border-color: var(--primary-color);
}

input.error {
    border-color: #dc3545;
}

/* Image Container */
.image-container {
    background: var(--secondary-bg);
    padding: 40px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    text-align: center;
    display: flex;
    justify-content: center;
    align-items: center;
}

.image-container svg {
    max-width: 100%;
    height: auto;
}

/* Share Container */
.share-container {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    align-items: center;
}

.share-container button {
    white-space: nowrap;
    padding: 8px 16px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s;
    font-size: 14px;
    font-weight: 500;
}

.share-container button:hover {
    background: var(--hover-color);
}

.share-container button:disabled {
    background: #ccc;
    cursor: not-allowed;
}

#shareUrl {
    flex-grow: 1;
    padding: 8px 12px;
    font-size: 14px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--bg-color);
    color: var(--text-color);
}

/* Preview Sections */
.preview-section, .about-section {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 20px;
}

.preview-header {
    background-color: var(--secondary-bg);
    padding: 15px;
    border-bottom: 1px solid var(--border-color);
}

.preview-header h2 {
    margin: 0;
    font-size: 1.2em;
}

.preview-content {
    padding: 20px;
}

.preview-content ul {
    padding-left: 30px;
    margin-bottom: 15px;
}

/* Social Preview */
.social-preview {
    max-width: 600px;
    margin: 0 auto;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

.social-preview-text {
    padding: 15px;
}

.social-preview-title {
    font-size: 16px;
    font-weight: bold;
    margin-bottom: 8px;
}

.social-preview-description {
    font-size: 14px;
    opacity: 0.7;
    margin-bottom: 8px;
}

.social-preview-url {
    font-size: 12px;
    opacity: 0.5;
    word-break: break-all;
}

/* Footer */
footer {
    text-align: center;
    padding: 20px 0;
    border-top: 1px solid var(--border-color);
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: #10B981;
    color: white;
    padding: 12px 24px;
    border-radius: 4px;
    opacity: 0;
    transform: translateY(100%);
    transition: all 0.3s ease-in-out;
    z-index: 1000;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.2);
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

/* Dark mode support for toast */
body.dark-mode .toast {
    background-color: #059669;
    color: #ffffff;
    box-shadow: 0 2px 8px rgba(5, 150, 105, 0.3);
}

/* Responsive Design */
@media (min-width: 768px) {
    .target-timezones {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 768px) {
    .target-timezones {
        grid-template-columns: repeat(2, 1fr);
    }

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

    header {
        flex-direction: column;
        gap: 15px;
    }

    .share-container {
        flex-wrap: wrap;
    }

    .share-container button {
        flex: 1;
        min-width: 120px;
    }

    #shareUrl {
        flex: 100%;
        order: -1;
    }
}

@media (max-width: 480px) {
    .target-timezones {
        grid-template-columns: 1fr;
    }
    
    .container {
        padding: 10px;
    }
    
    .settings-container {
        padding: 15px;
    }
}