@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@300;400;500;600;700;800&display=swap');

:root {
    /* Fonts */
    --font-heading: 'Outfit', 'Inter', system-ui, -apple-system, sans-serif;
    --font-body: 'Inter', system-ui, -apple-system, sans-serif;

    /* Light Theme Color Tokens (HaiVan Brand: Blue & Orange Accent) */
    --primary: #004b87;         /* Hải Vân Navy Blue */
    --primary-light: #0d6efd;
    --primary-dark: #002c52;
    --accent: #f26522;          /* Hải Vân Orange/Red Accent */
    --accent-hover: #d54d0d;
    
    --bg-main: #f4f7fa;
    --bg-card: rgba(255, 255, 255, 0.85);
    --bg-input: #ffffff;
    --bg-header: #ffffff;
    
    --text-main: #2b3a4a;
    --text-muted: #6c7a89;
    --text-light: #ffffff;
    
    --border-color: rgba(0, 75, 135, 0.12);
    --border-focus: #0d6efd;
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 8px 24px rgba(0, 75, 135, 0.06);
    --shadow-lg: 0 16px 40px rgba(0, 75, 135, 0.1);
    
    --glass-bg: rgba(255, 255, 255, 0.75);
    --glass-border: rgba(255, 255, 255, 0.6);
    --glass-blur: blur(12px);

    /* 9-Box Grid Colors (Harmonious & Professional) */
    --box-star: #e8f5e9;       /* Light Green */
    --box-star-text: #2e7d32;
    --box-star-border: #a5d6a7;

    --box-high: #e3f2fd;       /* Light Blue */
    --box-high-text: #1565c0;
    --box-high-border: #90caf9;

    --box-core: #fff8e1;       /* Light Yellow */
    --box-core-text: #f57f17;
    --box-core-border: #ffe082;

    --box-under: #f3e5f5;      /* Light Purple */
    --box-under-text: #6a1b9a;
    --box-under-border: #ce93d8;

    --box-warn: #fff3e0;       /* Light Orange */
    --box-warn-text: #e65100;
    --box-warn-border: #ffcc80;

    --box-risk: #ffebee;       /* Light Red */
    --box-risk-text: #c62828;
    --box-risk-border: #ef9a9a;
    
    /* Layout Tokens */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Theme Variables */
[data-theme="dark"] {
    --bg-main: #0b131f;
    --bg-card: rgba(20, 28, 42, 0.85);
    --bg-input: #1b2636;
    --bg-header: #101926;
    
    --text-main: #e2e8f0;
    --text-muted: #94a3b8;
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-focus: #3b82f6;
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.4);
    
    --glass-bg: rgba(20, 28, 42, 0.75);
    --glass-border: rgba(255, 255, 255, 0.05);
    
    /* Dark 9-box grids colors */
    --box-star: rgba(46, 125, 50, 0.15);
    --box-star-text: #81c784;
    --box-star-border: rgba(76, 175, 80, 0.3);

    --box-high: rgba(21, 101, 192, 0.15);
    --box-high-text: #64b5f6;
    --box-high-border: rgba(33, 150, 243, 0.3);

    --box-core: rgba(245, 127, 23, 0.15);
    --box-core-text: #ffd54f;
    --box-core-border: rgba(255, 193, 7, 0.3);

    --box-under: rgba(106, 27, 154, 0.15);
    --box-under-text: #ba68c8;
    --box-under-border: rgba(156, 39, 176, 0.3);

    --box-warn: rgba(230, 81, 0, 0.15);
    --box-warn-text: #ffb74d;
    --box-warn-border: rgba(255, 152, 0, 0.3);

    --box-risk: rgba(198, 40, 40, 0.15);
    --box-risk-text: #e57373;
    --box-risk-border: rgba(244, 67, 54, 0.3);
}

/* Global Reset & Base Styling */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.6;
    transition: background-color var(--transition-normal), color var(--transition-normal);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    letter-spacing: -0.02em;
}

/* Utilities */
.glass-panel {
    background: var(--bg-card);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-normal);
}

.glass-panel:hover {
    box-shadow: var(--shadow-lg);
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Common Layout Components */
header {
    background: var(--bg-header);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-text {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.5rem;
    color: var(--primary);
    text-transform: uppercase;
}

.logo-accent {
    color: var(--accent);
}

.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.25rem;
    color: var(--text-muted);
    padding: 8px;
    border-radius: 50%;
    transition: background var(--transition-fast), color var(--transition-fast);
}

.theme-toggle:hover {
    background: var(--border-color);
    color: var(--primary);
}

/* Form Styling */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-main);
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--text-main);
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.15);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.95rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: transform var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: var(--text-light);
    box-shadow: 0 4px 12px rgba(0, 75, 135, 0.2);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    box-shadow: 0 6px 16px rgba(0, 75, 135, 0.3);
}

.btn-secondary {
    background: var(--bg-main);
    color: var(--text-main);
    border: 1px solid var(--border-color);
}

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

.btn-accent {
    background: linear-gradient(135deg, var(--accent) 0%, #ff7a45 100%);
    color: var(--text-light);
    box-shadow: 0 4px 12px rgba(242, 101, 34, 0.2);
}

.btn-accent:hover {
    background: linear-gradient(135deg, var(--accent-hover) 0%, var(--accent) 100%);
    box-shadow: 0 6px 16px rgba(242, 101, 34, 0.3);
}

/* Cards & Layout */
.container {
    max-width: 1280px;
    margin: 2rem auto;
    padding: 0 1.5rem;
}

.card-header {
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-body {
    padding: 2rem;
}

/* Custom Table */
.table-responsive {
    width: 100%;
    overflow-x: auto;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.95rem;
}

th {
    background-color: rgba(0, 75, 135, 0.05);
    color: var(--primary);
    font-family: var(--font-heading);
    font-weight: 600;
    padding: 1rem;
    border-bottom: 2px solid var(--border-color);
}

td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-main);
}

tr:hover td {
    background-color: rgba(0, 75, 135, 0.02);
}

/* Badge System */
.badge {
    display: inline-flex;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-success { background: #e8f5e9; color: #2e7d32; }
.badge-warning { background: #fff3e0; color: #e65100; }
.badge-danger { background: #ffebee; color: #c62828; }
.badge-info { background: #e3f2fd; color: #1565c0; }

/* Micro-animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn var(--transition-normal);
}