/* ====================================================================================================
   DOODECO DESIGN SYSTEM - CENTRAL CSS VARIABLES
   ====================================================================================================
   This file contains all centralized design tokens including:
   - Color Palette
   - Typography Scale (Responsive)
   - Spacing System
   - Shadow System
   - Animation Timing
   ==================================================================================================== */

:root {
    /* ===== COLOR PALETTE =====
    ---------------------------------------------------------------------------------------------------- */

    /* Primary Colors */
    --color-primary: #397e8f;
    --color-primary-light: #4a9aad;
    --color-primary-dark: #2d6472;
    --color-primary-hover: #333;

    /* Secondary/Accent Colors */
    --color-accent: #397e8f;
    /* Gold - used for highlights */
    --color-accent-light: #4a9aad;
    --color-accent-dark: #2d6472;

    /* Neutral Colors */
    --color-black: #000;
    --color-dark: #1a1a1a;
    --color-gray-900: #333;
    --color-gray-700: #555;
    --color-gray-600: #666;
    --color-gray-500: #888;
    --color-gray-400: #9e9e9e;
    --color-gray-300: #c9c9c9;
    --color-gray-200: #ddd;
    --color-gray-100: #e5e5e5;
    --color-gray-50: #eee;
    --color-light: #f8f7f5;
    --color-white: #fff;

    /* Semantic Colors */
    --color-success: #4caf50;
    --color-warning: #ed7d31;
    --color-error: #ff6666;
    --color-info: #397e8f;

    /* Background Colors */
    --bg-primary: var(--color-white);
    --bg-secondary: var(--color-light);
    --bg-dark: var(--color-dark);
    --bg-overlay: rgba(0, 0, 0, 0.55);

    /* Text Colors */
    --text-primary: var(--color-gray-900);
    --text-secondary: var(--color-gray-600);
    --text-muted: var(--color-gray-500);
    --text-light: var(--color-white);
    --text-accent: var(--color-accent);

    /* Border Colors */
    --border-light: var(--color-gray-100);
    --border-default: var(--color-gray-300);
    --border-dark: var(--color-gray-900);


    /* ===== TYPOGRAPHY - FONT FAMILIES =====
    ---------------------------------------------------------------------------------------------------- */

    --font-primary: "Kanit", sans-serif;
    --font-secondary: "Inter", "Roboto", sans-serif;

    /* Font Weights */
    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;


    /* ===== RESPONSIVE FONT SIZES =====
    ---------------------------------------------------------------------------------------------------- 
    Using clamp() for fluid typography:
    clamp(min, preferred, max)
    - min: minimum font size (mobile)
    - preferred: fluid value based on viewport
    - max: maximum font size (desktop)
    ---------------------------------------------------------------------------------------------------- */

    /* Display Text - Hero/Banner Headlines */
    --font-size-display-xl: clamp(2.5rem, 5vw + 1rem, 4.5rem);
    /* 40px → 72px */
    --font-size-display-lg: clamp(2rem, 4vw + 0.75rem, 3.5rem);
    /* 32px → 56px */
    --font-size-display-md: clamp(1.75rem, 3vw + 0.5rem, 2.75rem);
    /* 28px → 44px */

    /* Headings */
    --font-size-h1: clamp(1.75rem, 2.5vw + 0.5rem, 2.625rem);
    /* 28px → 42px */
    --font-size-h2: clamp(1.5rem, 2vw + 0.5rem, 2.25rem);
    /* 24px → 36px */
    --font-size-h3: clamp(1.25rem, 1.5vw + 0.5rem, 1.75rem);
    /* 20px → 28px */
    --font-size-h4: clamp(1.125rem, 1vw + 0.5rem, 1.5rem);
    /* 18px → 24px */
    --font-size-h5: clamp(1rem, 0.75vw + 0.5rem, 1.25rem);
    /* 16px → 20px */
    --font-size-h6: clamp(0.875rem, 0.5vw + 0.5rem, 1.125rem);
    /* 14px → 18px */

    /* Body Text */
    --font-size-body-xl: clamp(1.25rem, 1vw + 0.25rem, 1.5rem);
    /* 20px → 24px */
    --font-size-body-lg: clamp(1.125rem, 0.75vw + 0.25rem, 1.375rem);
    /* 18px → 22px */
    --font-size-body-md: clamp(1rem, 0.5vw + 0.25rem, 1.125rem);
    /* 16px → 18px */
    --font-size-body-sm: clamp(0.875rem, 0.25vw + 0.25rem, 1rem);
    /* 14px → 16px */
    --font-size-body-xs: clamp(0.75rem, 0.25vw + 0.1rem, 0.875rem);
    /* 12px → 14px */

    /* Special Text */
    --font-size-caption: clamp(0.625rem, 0.25vw + 0.25rem, 0.75rem);
    /* 10px → 12px */
    --font-size-label: clamp(0.6875rem, 0.25vw + 0.25rem, 0.875rem);
    /* 11px → 14px */
    --font-size-overline: clamp(0.625rem, 0.25vw + 0.25rem, 0.75rem);
    /* 10px → 12px */

    /* Line Heights */
    --line-height-tight: 1.2;
    --line-height-snug: 1.3;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.7;
    --line-height-loose: 1.8;

    /* Letter Spacing */
    --letter-spacing-tight: -0.025em;
    --letter-spacing-normal: 0;
    --letter-spacing-wide: 0.05em;
    --letter-spacing-wider: 0.1em;
    --letter-spacing-widest: 0.15em;


    /* ===== SPACING SYSTEM =====
    ---------------------------------------------------------------------------------------------------- */

    --space-0: 0;
    --space-1: 0.25rem;
    /* 4px */
    --space-2: 0.5rem;
    /* 8px */
    --space-3: 0.75rem;
    /* 12px */
    --space-4: 1rem;
    /* 16px */
    --space-5: 1.25rem;
    /* 20px */
    --space-6: 1.5rem;
    /* 24px */
    --space-8: 2rem;
    /* 32px */
    --space-10: 2.5rem;
    /* 40px */
    --space-12: 3rem;
    /* 48px */
    --space-16: 4rem;
    /* 64px */
    --space-20: 5rem;
    /* 80px */
    --space-24: 6rem;
    /* 96px */

    /* Container */
    --container-padding: clamp(1rem, 5vw, 4rem);
    --container-width: 100%;
    --container-doodeco-width: 1440px;
    --container-content-width: 800px;

    /* ===== BORDER RADIUS =====
    ---------------------------------------------------------------------------------------------------- */

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 20px;
    --radius-round: 9999px;


    /* ===== SHADOWS =====
    ---------------------------------------------------------------------------------------------------- */

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
    --shadow-2xl: 0 25px 50px rgba(0, 0, 0, 0.25);
    --shadow-header: rgba(0, 0, 0, 0.1) 0px 1px 3px 0px, rgba(0, 0, 0, 0.06) 0px 1px 2px 0px;


    /* ===== TRANSITIONS =====
    ---------------------------------------------------------------------------------------------------- */

    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    --transition-transform: transform 0.3s ease;
    --transition-all: all 0.3s ease;
}


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

/* ===== DISPLAY HEADINGS (Hero/Banner) ===== */
.text-display-xl {
    font-size: var(--font-size-display-xl);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    letter-spacing: var(--letter-spacing-tight);
}

.text-display-lg {
    font-size: var(--font-size-display-lg);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    letter-spacing: var(--letter-spacing-tight);
}

.text-display-md {
    font-size: var(--font-size-display-md);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-snug);
}

/* ===== STANDARD HEADINGS ===== */
.text-h1 {
    font-size: var(--font-size-h1);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-snug);
    color: var(--text-primary);
}

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

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

.text-h4 {
    font-size: var(--font-size-h4);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-normal);
    color: var(--text-primary);
}

.text-h5 {
    font-size: var(--font-size-h5);
    font-weight: var(--font-weight-medium);
    line-height: var(--line-height-normal);
    color: var(--text-primary);
}

.text-h6 {
    font-size: var(--font-size-h6);
    font-weight: var(--font-weight-medium);
    line-height: var(--line-height-normal);
    color: var(--text-primary);
}

/* ===== BODY TEXT ===== */
.text-body-xl {
    font-size: var(--font-size-body-xl);
    font-weight: var(--font-weight-regular);
    line-height: var(--line-height-relaxed);
    color: var(--text-primary);
}

.text-body-lg {
    font-size: var(--font-size-body-lg);
    font-weight: var(--font-weight-regular);
    line-height: var(--line-height-relaxed);
    color: var(--text-primary);
}

.text-body-md {
    font-size: var(--font-size-body-md);
    font-weight: var(--font-weight-regular);
    line-height: var(--line-height-normal);
    color: var(--text-primary);
}

.text-body-sm {
    font-size: var(--font-size-body-sm);
    font-weight: var(--font-weight-regular);
    line-height: var(--line-height-normal);
    color: var(--text-secondary);
}

.text-body-xs {
    font-size: var(--font-size-body-xs);
    font-weight: var(--font-weight-regular);
    line-height: var(--line-height-normal);
    color: var(--text-muted);
}

/* ===== SPECIAL TEXT ===== */
.text-caption {
    font-size: var(--font-size-caption);
    font-weight: var(--font-weight-regular);
    line-height: var(--line-height-normal);
    color: var(--text-muted);
}

.text-label {
    font-size: var(--font-size-label);
    font-weight: var(--font-weight-medium);
    letter-spacing: var(--letter-spacing-wider);
    text-transform: uppercase;
    color: var(--text-secondary);
}

.text-overline {
    font-size: var(--font-size-overline);
    font-weight: var(--font-weight-medium);
    letter-spacing: var(--letter-spacing-widest);
    text-transform: uppercase;
    color: var(--text-muted);
}

/* ===== COLOR UTILITY CLASSES ===== */
.text-primary {
    color: var(--color-primary) !important;
}

.text-accent {
    color: var(--color-accent) !important;
}

.text-dark {
    color: var(--text-primary) !important;
}

.text-secondary {
    color: var(--text-secondary) !important;
}

.text-muted {
    color: var(--text-muted) !important;
}

.text-light {
    color: var(--text-light) !important;
}

.text-success {
    color: var(--color-success) !important;
}

.text-warning {
    color: var(--color-warning) !important;
}

.text-error {
    color: var(--color-error) !important;
}

/* ===== BACKGROUND UTILITY CLASSES ===== */
.bg-primary {
    background-color: var(--bg-primary) !important;
}

.bg-secondary {
    background-color: var(--bg-secondary) !important;
}

.bg-dark {
    background-color: var(--bg-dark) !important;
}

.bg-accent {
    background-color: var(--color-accent) !important;
}

.bg-overlay {
    background-color: var(--bg-overlay) !important;
}

/* ===== FONT WEIGHT UTILITIES ===== */
.font-light {
    font-weight: var(--font-weight-light) !important;
}

.font-regular {
    font-weight: var(--font-weight-regular) !important;
}

.font-medium {
    font-weight: var(--font-weight-medium) !important;
}

.font-semibold {
    font-weight: var(--font-weight-semibold) !important;
}

.font-bold {
    font-weight: var(--font-weight-bold) !important;
}

/* ===== TEXT ALIGNMENT ===== */
.text-center {
    text-align: center !important;
}

.text-left {
    text-align: left !important;
}

.text-right {
    text-align: right !important;
}

/* ===== STAT NUMBER STYLE (for stats sections) ===== */
.text-stat-number {
    font-size: clamp(2rem, 4vw + 0.5rem, 3.5rem);
    /* 32px → 56px */
    font-weight: var(--font-weight-semibold);
    line-height: 1;
    color: var(--text-primary);
}

/* ===== CTA TITLE STYLE ===== */
.text-cta-title {
    font-size: clamp(1.75rem, 3vw + 0.5rem, 2.625rem);
    /* 28px → 42px */
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-snug);
    color: var(--text-light);
}