/* =========================================
   DESIGN SYSTEM - Enterprise UI/UX
   Version: 1.0
   =========================================
   
   Cách sử dụng: var(--color-primary)
   Import file này TRƯỚC styles.css
   ========================================= */

:root {
    /* ===== COLORS ===== */
    
    /* Primary - Cam chủ đạo */
    --color-primary: #ff6900;
    --color-primary-hover: #e55d00;
    --color-primary-light: #fff4ed;
    --color-primary-dark: #cc5400;
    
    /* Secondary */
    --color-secondary: #1e3a5f;
    --color-secondary-hover: #152d4a;
    --color-secondary-light: #e8eef5;
    
    /* Neutral - Text & Background */
    --color-text-primary: #1d1d1d;
    --color-text-secondary: #4f4f4f;
    --color-text-muted: #74788d;
    --color-text-light: #9ca3af;
    
    /* Backgrounds */
    --color-bg-primary: #ffffff;
    --color-bg-secondary: #f8f9fa;
    --color-bg-tertiary: #f3f4f6;
    --color-bg-dark: #1e3a5f;
    
    /* Borders */
    --color-border: #e5e7eb;
    --color-border-light: #f0f0f0;
    --color-border-dark: #d1d5db;
    
    /* Status Colors */
    --color-success: #10b981;
    --color-success-light: #ecfdf5;
    --color-warning: #f59e0b;
    --color-warning-light: #fffbeb;
    --color-danger: #ef4444;
    --color-danger-light: #fef2f2;
    --color-info: #3b82f6;
    --color-info-light: #eff6ff;
    
    /* ===== SPACING (8px Grid) ===== */
    --space-0: 0;
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-7: 32px;
    --space-8: 40px;
    --space-9: 48px;
    --space-10: 64px;
    
    /* ===== TYPOGRAPHY ===== */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    /* Font Sizes - Enterprise (nhỏ hơn, chuyên nghiệp) */
    --text-xs: 12px;
    --text-sm: 13px;
    --text-base: 14px;
    --text-md: 15px;
    --text-lg: 16px;
    --text-xl: 18px;
    --text-2xl: 20px;
    --text-3xl: 24px;
    --text-4xl: 28px;
    --text-5xl: 32px;
    
    /* Line Heights */
    --leading-tight: 1.25;
    --leading-normal: 1.5;
    --leading-relaxed: 1.625;
    
    /* Font Weights */
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    
    /* ===== BORDER RADIUS ===== */
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --radius-xl: 12px;
    --radius-full: 9999px;
    
    /* ===== SHADOWS ===== */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* ===== TRANSITIONS ===== */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* ===== Z-INDEX ===== */
    --z-dropdown: 100;
    --z-sticky: 500;
    --z-fixed: 1000;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-tooltip: 1070;
}

/* ===== UTILITY CLASSES ===== */

/* Text Colors */
.text-primary { color: var(--color-primary) !important; }
.text-secondary { color: var(--color-text-secondary) !important; }
.text-muted { color: var(--color-text-muted) !important; }
.text-success { color: var(--color-success) !important; }
.text-warning { color: var(--color-warning) !important; }
.text-danger { color: var(--color-danger) !important; }
.text-info { color: var(--color-info) !important; }

/* Background Colors */
.bg-primary-light { background-color: var(--color-primary-light) !important; }
.bg-secondary-light { background-color: var(--color-secondary-light) !important; }
.bg-success-light { background-color: var(--color-success-light) !important; }
.bg-warning-light { background-color: var(--color-warning-light) !important; }
.bg-danger-light { background-color: var(--color-danger-light) !important; }
.bg-info-light { background-color: var(--color-info-light) !important; }

/* Icon Sizing - Thống nhất */
.icon-sm { font-size: 14px !important; width: 14px; height: 14px; }
.icon-md { font-size: 18px !important; width: 18px; height: 18px; }
.icon-lg { font-size: 24px !important; width: 24px; height: 24px; }

/* ===== ENTERPRISE OVERRIDES ===== */

/* Giảm heading sizes cho enterprise look */
.enterprise h1, h1.enterprise { font-size: var(--text-5xl); font-weight: var(--font-bold); }
.enterprise h2, h2.enterprise { font-size: var(--text-4xl); font-weight: var(--font-semibold); }
.enterprise h3, h3.enterprise { font-size: var(--text-3xl); font-weight: var(--font-semibold); }
.enterprise h4, h4.enterprise { font-size: var(--text-2xl); font-weight: var(--font-semibold); }
.enterprise h5, h5.enterprise { font-size: var(--text-xl); font-weight: var(--font-medium); }
.enterprise h6, h6.enterprise { font-size: var(--text-lg); font-weight: var(--font-medium); }

/* Enterprise Button Style */
.btn-enterprise {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-base);
    font-weight: var(--font-medium);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
}

.btn-enterprise.btn-primary {
    background: var(--color-primary);
    border: 1px solid var(--color-primary);
    color: #fff;
}

.btn-enterprise.btn-primary:hover {
    background: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
}

/* Enterprise Card */
.card-enterprise {
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-normal);
}

.card-enterprise:hover {
    box-shadow: var(--shadow-md);
}

/* Enterprise Table */
.table-enterprise {
    font-size: var(--text-base);
}

.table-enterprise th {
    font-weight: var(--font-semibold);
    color: var(--color-text-primary);
    background: var(--color-bg-secondary);
    padding: var(--space-3) var(--space-4);
    border-bottom: 2px solid var(--color-border);
    text-transform: uppercase;
    font-size: var(--text-xs);
    letter-spacing: 0.5px;
}

.table-enterprise td {
    padding: var(--space-3) var(--space-4);
    color: var(--color-text-secondary);
    border-bottom: 1px solid var(--color-border-light);
    vertical-align: middle;
}

.table-enterprise tbody tr:hover {
    background: var(--color-bg-tertiary);
}

/* Enterprise Form */
.form-control-enterprise {
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-base);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control-enterprise:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
    outline: none;
}

/* Enterprise Label */
.form-label-enterprise {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-text-primary);
    margin-bottom: var(--space-1);
}

/* Status Badges */
.badge-enterprise {
    padding: var(--space-1) var(--space-2);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    border-radius: var(--radius-sm);
}

.badge-success { background: var(--color-success-light); color: var(--color-success); }
.badge-warning { background: var(--color-warning-light); color: var(--color-warning); }
.badge-danger { background: var(--color-danger-light); color: var(--color-danger); }
.badge-info { background: var(--color-info-light); color: var(--color-info); }