/* ==========================================================================
   Bulgul Design System — Core Variables & Typography (Heepsy Style)
   ========================================================================== */

:root {
    /* Color Palette - Clean Light Mode */
    --bg-base: #ffffff; /* Clean white */
    --bg-surface: #f8f9fa; /* Light grey for sections */
    --bg-surface-elevated: #ffffff; /* For cards */
    
    /* Vibrant Accents */
    --accent-primary: #00a854; /* Heepsy Green */
    --accent-primary-hover: #009349;
    --accent-secondary: #0b192c; /* Navy */
    
    /* Text Colors */
    --text-primary: #0b192c; /* Dark Navy */
    --text-secondary: #4a5568; /* Muted grey */
    --text-muted: #718096;
    
    /* Semantic Colors */
    --success: #00a854;
    --warning: #F59E0B;
    --error: #EF4444;
    --info: #3B82F6;

    /* Shadows & Borders */
    --ui-border: #e2e8f0;
    --ui-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    --ui-shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    
    /* Typography */
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-display: 'Outfit', 'Inter', system-ui, sans-serif;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-pill: 9999px;

    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
}

/* ==========================================================================
   Base Reset & Typography
   ========================================================================== */

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-base);
    color: var(--text-secondary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 0.5em;
    color: var(--text-primary);
}

a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--accent-primary-hover);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ==========================================================================
   Utility Classes & Layout
   ========================================================================== */

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-2 { gap: 8px; }
.gap-4 { gap: 16px; }
.gap-6 { gap: 24px; }
.grid { display: grid; }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }

/* ==========================================================================
   UI Components (Clean SaaS Mode)
   ========================================================================== */

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 0.95rem;
    border-radius: var(--radius-pill);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-primary {
    background-color: var(--accent-primary);
    color: #fff;
    border-color: var(--accent-primary);
}

.btn-primary:hover {
    background-color: var(--accent-primary-hover);
    border-color: var(--accent-primary-hover);
    color: #fff;
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-primary);
    border-color: var(--ui-border);
}

.btn-secondary:hover {
    border-color: var(--text-primary);
}

/* UI Card */
.ui-card, .glass-card {
    background: var(--bg-surface-elevated);
    border: 1px solid var(--ui-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--ui-shadow);
    padding: 24px;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

/* Inputs & Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.form-input {
    width: 100%;
    padding: 14px 16px;
    background-color: var(--bg-base);
    border: 1px solid var(--ui-border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(0, 168, 84, 0.2);
}

/* Gradients for Text (Keep for minor accents, updated colors) */
.text-gradient {
    color: var(--accent-primary);
}