/* Base CSS - Core styles, reset, typography, and layout utilities */

/* CSS Reset and Normalization */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* CSS Custom Properties (Variables) */
:root {
    /* Primary Colors */
    --primary-color: #5e72e4;
    --primary-hover: #4c63d2;
    --secondary-color: #f5f5f5;
    
    /* Feedback Colors */
    --success-color: #28a745;
    --error-color: #dc3545;
    --warning-color: #ffc107;
    --danger-color: #f44336;
    --info-color: #0984e3;
    
    /* Special Colors */
    --gold-color: #ffd700;
    --orange-color: #ff9800;
    --pink-color: #ff6b6b;
    
    /* Background Gradients */
    --bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --card-bg: white;
    --panel-bg: #f8f9fa;
    
    /* Typography */
    --font-family: 'Comic Sans MS', 'Arial', sans-serif;
    --font-family-mono: 'Courier New', monospace;
    --font-size-base: 1rem;
    --font-size-sm: 0.9em;
    --font-size-md: 1.1em;
    --font-size-lg: 1.2em;
    --font-size-xl: 1.5em;
    --font-size-2xl: 2em;
    --font-size-3xl: 2.5em;
    --font-size-4xl: 3em;
    
    /* Spacing */
    --spacing-xs: 5px;
    --spacing-sm: 10px;
    --spacing-md: 20px;
    --spacing-lg: 30px;
    --spacing-xl: 40px;
    
    /* Border Radius */
    --border-radius-sm: 8px;
    --border-radius-md: 10px;
    --border-radius-lg: 15px;
    --border-radius-xl: 20px;
    --border-radius-round: 25px;
    --border-radius-circle: 50%;
    
    /* Shadows */
    --shadow-sm: 0 2px 5px rgba(0,0,0,0.1);
    --shadow-md: 0 5px 15px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.2);
    --shadow-xl: 0 15px 35px rgba(0,0,0,0.1);
    
    /* Transitions */
    --transition-fast: all 0.2s ease;
    --transition-normal: all 0.3s ease;
    --transition-slow: all 0.5s ease;
    
    /* Border Width */
    --border-width: 2px;
    --border-width-thick: 3px;
    --border-width-extra-thick: 5px;
}

/* Base Body Styles */
body {
    font-family: var(--font-family);
    background: var(--bg-gradient);
    min-height: 100vh;
    color: #333;
}

/* Main App Container */
#app {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-md);
}

/* Container Classes */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-md);
}

/* Typography Base */
h1, h2, h3, h4, h5, h6 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: var(--font-size-3xl);
    text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
}

h2 {
    font-size: var(--font-size-2xl);
}

h3 {
    font-size: var(--font-size-xl);
}

/* Layout Utilities */
.flex {
    display: flex;
}

.flex-center {
    display: flex;
    justify-content: center;
    align-items: center;
}

.flex-between {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.flex-column {
    display: flex;
    flex-direction: column;
}

.grid {
    display: grid;
}

.text-center {
    text-align: center;
}

/* Display Utilities */
.hidden {
    display: none;
}

.block {
    display: block;
}

.inline-block {
    display: inline-block;
}

/* Spacing Utilities */
.m-0 { margin: 0; }
.m-xs { margin: var(--spacing-xs); }
.m-sm { margin: var(--spacing-sm); }
.m-md { margin: var(--spacing-md); }
.m-lg { margin: var(--spacing-lg); }
.m-xl { margin: var(--spacing-xl); }

.mt-0 { margin-top: 0; }
.mt-xs { margin-top: var(--spacing-xs); }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-0 { margin-bottom: 0; }
.mb-xs { margin-bottom: var(--spacing-xs); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.p-0 { padding: 0; }
.p-xs { padding: var(--spacing-xs); }
.p-sm { padding: var(--spacing-sm); }
.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }
.p-xl { padding: var(--spacing-xl); }

/* Responsive Breakpoints - Tablet */
@media (max-width: 1024px) and (min-width: 769px) {
    #app {
        padding: 15px;
    }
    
    h1 {
        font-size: 2.2em;
    }
    
    h2 {
        font-size: 1.8em;
    }
    
    h3 {
        font-size: 1.4em;
    }
}

/* Responsive Breakpoints - Mobile */
@media (max-width: 768px) {
    #app {
        padding: 10px;
    }
    
    h1 {
        font-size: 1.8em;
    }
    
    h2 {
        font-size: 1.6em;
    }
    
    h3 {
        font-size: 1.3em;
    }
    
    .container {
        padding: 10px;
    }
}