/* ================================
   Design System & Style Guide
   MCS (MM2H) Sdn Bhd
   Updated: February 2026
   ================================ */

:root {
    /* ===== Color Palette ===== */
    
    /* Primary Brand Colors */
    --color-primary: #00C0C0;
    --color-primary-light: #00E5E5;
    --color-primary-dark: #008B8B;
    --color-cyan: #00B4D8;
    --color-turquoise: #0096C7;
    
    /* Status & Feedback Colors */
    --color-critical: #DC2626;      /* Red - Critical errors */
    --color-error: #EF4444;
    --color-warning: #F59E0B;       /* Amber - Warnings */
    --color-warning-light: #FCD34D;
    --color-success: #10B981;       /* Green - Success/Verified */
    --color-success-dark: #059669;
    --color-info: #3B82F6;          /* Blue - Info */
    --color-info-light: #60A5FA;
    
    /* Neutral Colors */
    --color-white: #FFFFFF;
    --color-gray-50: #F9FAFB;
    --color-gray-100: #F3F4F6;
    --color-gray-200: #E5E7EB;
    --color-gray-300: #D1D5DB;
    --color-gray-400: #9CA3AF;
    --color-gray-500: #6B7280;
    --color-gray-600: #4B5563;
    --color-gray-700: #374151;
    --color-gray-800: #1F2937;
    --color-gray-900: #111827;
    --color-black: #000000;
    
    /* Text Colors */
    --color-text-primary: #1F2937;
    --color-text-secondary: #4B5563;
    --color-text-light: #6B7280;
    --color-text-inverse: #FFFFFF;
    
    /* Background Colors */
    --color-bg-primary: #FFFFFF;
    --color-bg-secondary: #F9FAFB;
    --color-bg-tertiary: #F3F4F6;
    --color-bg-dark: #1F2937;
    
    /* Border Colors */
    --color-border-light: #E5E7EB;
    --color-border-medium: #D1D5DB;
    --color-border-dark: #9CA3AF;
    
    /* ===== Typography ===== */
    
    /* Font Families */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Playfair Display', Georgia, serif;
    --font-mono: 'Monaco', 'Courier New', monospace;
    
    /* Font Sizes - Desktop */
    --font-size-hero: 48px;         /* Hero headings */
    --font-size-h1: 36px;           /* Main headings */
    --font-size-h2: 32px;           /* Section headings */
    --font-size-h3: 28px;           /* Sub-section headings */
    --font-size-h4: 24px;
    --font-size-h5: 20px;
    --font-size-body: 18px;         /* Body text */
    --font-size-base: 16px;         /* Default body */
    --font-size-small: 14px;        /* Small print */
    --font-size-tiny: 12px;
    
    /* Font Weights */
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    
    /* Line Heights */
    --line-height-tight: 1.2;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.6;
    --line-height-loose: 1.8;
    
    /* ===== Spacing System ===== */
    
    /* Base spacing unit: 8px */
    --spacing-0: 0;
    --spacing-1: 4px;       /* 0.5 unit */
    --spacing-2: 8px;       /* 1 unit */
    --spacing-3: 12px;      /* 1.5 units */
    --spacing-4: 16px;      /* 2 units */
    --spacing-5: 20px;      /* 2.5 units */
    --spacing-6: 24px;      /* 3 units */
    --spacing-8: 32px;      /* 4 units */
    --spacing-10: 40px;     /* 5 units */
    --spacing-12: 48px;     /* 6 units */
    --spacing-16: 64px;     /* 8 units */
    --spacing-20: 80px;     /* 10 units */
    --spacing-24: 96px;     /* 12 units */
    
    /* Semantic spacing */
    --spacing-section-vertical: 80px;   /* Section top/bottom padding */
    --spacing-section-mobile: 40px;     /* Mobile section padding */
    --spacing-card: 24px;               /* Card spacing */
    --spacing-card-mobile: 20px;        /* Mobile card spacing */
    --spacing-element: 20px;            /* Element spacing */
    
    /* ===== Border Radius ===== */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --radius-full: 9999px;
    
    /* ===== Shadows ===== */
    --shadow-sm: 0 1px 2px 0 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);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* ===== Transitions ===== */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;
    
    /* ===== Z-Index ===== */
    --z-index-dropdown: 1000;
    --z-index-sticky: 1020;
    --z-index-fixed: 1030;
    --z-index-modal-backdrop: 1040;
    --z-index-modal: 1050;
    --z-index-popover: 1060;
    --z-index-tooltip: 1070;
}

/* ===== Mobile Responsive Overrides ===== */
@media (max-width: 768px) {
    :root {
        /* Font Sizes - Mobile */
        --font-size-hero: 32px;
        --font-size-h1: 28px;
        --font-size-h2: 24px;
        --font-size-h3: 20px;
        --font-size-h4: 18px;
        --font-size-body: 16px;
        --font-size-base: 16px;     /* Minimum for mobile readability */
        --font-size-small: 14px;
        
        /* Spacing - Mobile */
        --spacing-section-vertical: 40px;
        --spacing-card: 20px;
        --spacing-element: 16px;
    }
}

/* ===== Typography Classes ===== */

.text-hero {
    font-size: var(--font-size-hero);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    font-family: var(--font-heading);
}

.text-h1 {
    font-size: var(--font-size-h1);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
}

.text-h2 {
    font-size: var(--font-size-h2);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-normal);
}

.text-h3 {
    font-size: var(--font-size-h3);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-normal);
}

.text-body {
    font-size: var(--font-size-body);
    line-height: var(--line-height-relaxed);
}

.text-base {
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
}

.text-small {
    font-size: var(--font-size-small);
    line-height: var(--line-height-normal);
}

/* ===== Status Badge Components ===== */

.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-small);
    font-weight: var(--font-weight-medium);
    line-height: 1;
}

.badge-critical {
    background-color: var(--color-critical);
    color: var(--color-white);
}

.badge-warning {
    background-color: var(--color-warning);
    color: var(--color-gray-900);
}

.badge-success {
    background-color: var(--color-success);
    color: var(--color-white);
}

.badge-info {
    background-color: var(--color-info);
    color: var(--color-white);
}

.badge-verified {
    background: linear-gradient(135deg, var(--color-success) 0%, var(--color-success-dark) 100%);
    color: var(--color-white);
}

.badge-verified::before {
    content: "✓ ";
    margin-right: 4px;
}

/* ===== Alert Components ===== */

.alert {
    padding: var(--spacing-4);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-4);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-3);
}

.alert-icon {
    font-size: 20px;
    line-height: 1;
    flex-shrink: 0;
}

.alert-content {
    flex: 1;
}

.alert-title {
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-2);
}

.alert-critical {
    background-color: rgba(220, 38, 38, 0.1);
    border-left: 4px solid var(--color-critical);
    color: var(--color-critical);
}

.alert-warning {
    background-color: rgba(245, 158, 11, 0.1);
    border-left: 4px solid var(--color-warning);
    color: var(--color-gray-900);
}

.alert-warning .alert-icon {
    color: var(--color-warning);
}

.alert-success {
    background-color: rgba(16, 185, 129, 0.1);
    border-left: 4px solid var(--color-success);
    color: var(--color-success-dark);
}

.alert-info {
    background-color: rgba(59, 130, 246, 0.1);
    border-left: 4px solid var(--color-info);
    color: var(--color-info);
}

/* ===== Button System ===== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    min-height: 44px; /* Touch-friendly minimum */
    gap: var(--spacing-2);
}

.btn:active {
    transform: translateY(1px);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-turquoise) 100%);
    color: var(--color-white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.btn-success {
    background: var(--color-success);
    color: var(--color-white);
}

.btn-success:hover {
    background: var(--color-success-dark);
}

.btn-warning {
    background: var(--color-warning);
    color: var(--color-gray-900);
}

.btn-warning:hover {
    background: var(--color-warning-light);
}

.btn-critical {
    background: var(--color-critical);
    color: var(--color-white);
}

.btn-critical:hover {
    background: #B91C1C;
}

/* ===== Card Components ===== */

.card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-card);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.card-header {
    margin-bottom: var(--spacing-4);
    padding-bottom: var(--spacing-4);
    border-bottom: 2px solid var(--color-gray-100);
}

.card-title {
    font-size: var(--font-size-h3);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-2);
}

.card-body {
    color: var(--color-text-secondary);
}

/* ===== Section Spacing ===== */

.section {
    padding: var(--spacing-section-vertical) 0;
}

.section-sm {
    padding: 40px 0;
}

.section-lg {
    padding: 120px 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-6);
}

@media (max-width: 768px) {
    .section {
        padding: var(--spacing-section-mobile) 0;
    }
    
    .container {
        padding: 0 var(--spacing-4);
    }
}

/* ===== Utility Classes ===== */

/* Spacing utilities */
.mt-0 { margin-top: 0; }
.mt-2 { margin-top: var(--spacing-2); }
.mt-4 { margin-top: var(--spacing-4); }
.mt-6 { margin-top: var(--spacing-6); }
.mt-8 { margin-top: var(--spacing-8); }

.mb-0 { margin-bottom: 0; }
.mb-2 { margin-bottom: var(--spacing-2); }
.mb-4 { margin-bottom: var(--spacing-4); }
.mb-6 { margin-bottom: var(--spacing-6); }
.mb-8 { margin-bottom: var(--spacing-8); }

.p-4 { padding: var(--spacing-4); }
.p-6 { padding: var(--spacing-6); }
.p-8 { padding: var(--spacing-8); }

/* Text utilities */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--color-primary); }
.text-success { color: var(--color-success); }
.text-warning { color: var(--color-warning); }
.text-critical { color: var(--color-critical); }
.text-info { color: var(--color-info); }

.font-bold { font-weight: var(--font-weight-bold); }
.font-semibold { font-weight: var(--font-weight-semibold); }
.font-medium { font-weight: var(--font-weight-medium); }

/* Display utilities */
.d-block { display: block; }
.d-inline-block { display: inline-block; }
.d-flex { display: flex; }
.d-none { display: none; }

/* Flex utilities */
.flex-column { flex-direction: column; }
.flex-row { flex-direction: row; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.align-center { align-items: center; }
.gap-4 { gap: var(--spacing-4); }

/* ===== Mobile Optimization ===== */

@media (max-width: 768px) {
    /* Stack elements on mobile */
    .card,
    .alert,
    .btn {
        width: 100%;
    }
    
    /* Ensure touch-friendly targets */
    button,
    a,
    input,
    select,
    textarea {
        min-height: 44px;
        min-width: 44px;
    }
    
    /* Adequate spacing on mobile */
    .card {
        padding: var(--spacing-card-mobile);
        margin-bottom: var(--spacing-4);
    }
    
    /* Readable text */
    body {
        font-size: 16px; /* Prevent zoom on iOS */
    }
}

/* ===== Print Styles ===== */

@media print {
    .no-print {
        display: none !important;
    }
    
    a[href]:after {
        content: " (" attr(href) ")";
    }
}