/**
 * Base styles for CryptoExpert Portal
 * Version: 1.0
 * Date: 2025-07-30
 * Core variables, reset, and basic styling
 */

:root {
    --primary-color: #3498db;
    --secondary-color: #2c3e50;
    --accent-color: #e74c3c;
    --success-color: #2ecc71;
    --warning-color: #f39c12;
    --danger-color: #e74c3c;
    --light-color: #ecf0f1;
    --dark-color: #34495e;
    --crypto-gold: #f7931a;
    --crypto-blue: #627eea;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
    
    /* Light theme (default) */
    --bg-color: #f5f7fa;
    --card-bg: white;
    --text-color: var(--dark-color);
    --border-color: #eee;
    --weather-item-bg: #f8f9fa;
}

/* Dark theme */
[data-theme="dark"] {
    --bg-color: #1a1a1a;
    --card-bg: #2d2d2d;
    --text-color: #ecf0f1;
    --border-color: #404040;
    --weather-item-bg: #363636;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: var(--transition);
}

.container {
    width: 100%;
    min-height: 100vh;
}

/* Utility Classes */
.hidden {
    display: none;
}

/* Animations */
@keyframes pulse {
    0% { opacity: 0.5; }
    50% { opacity: 1; }
    100% { opacity: 0.5; }
}

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

@keyframes slideIn {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}

/* Error and Success Messages */
.error-message {
    color: var(--danger-color);
    text-align: center;
    margin-top: 1rem;
    min-height: 1.5rem;
}

.success-message {
    color: var(--success-color);
    background-color: rgba(46, 204, 113, 0.1);
    padding: 0.75rem;
    border-radius: 5px;
    margin-bottom: 1rem;
    border-left: 4px solid var(--success-color);
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-color);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}