/**
 * MINSUANSCORE DESIGN TOKENS
 * Global design system for consistent, professional UI
 * 
 * Architecture:
 * 1. Color tokens (light + dark themes)
 * 2. Typography tokens
 * 3. Spacing rhythm tokens
 * 4. Shadow system
 * 5. Rounded corners
 * 6. Component utilities
 * 7. Animations
 * 8. Dark mode overrides
 */

/* ============================================================
   COLOR TOKENS - LIGHT THEME (DEFAULT)
   ============================================================ */

:root {
    /* PRIMARY COLORS - Forest Green */
    --color-primary: #103F32;
    --color-primary-50: #F0F5F3;
    --color-primary-100: #E0EBE6;
    --color-primary-200: #C2D7CE;
    --color-primary-300: #A3C3B5;
    --color-primary-400: #85AF9D;
    --color-primary-500: #236B55;
    --color-primary-600: #1A4D3E;
    --color-primary-700: #103F32;
    --color-primary-800: #082C25;
    --color-primary-900: #001A15;

    /* SECONDARY COLORS - Emerald */
    --color-secondary: #236B55;
    --color-secondary-50: #F5F8F7;
    --color-secondary-100: #E6F1EB;
    --color-secondary-200: #D1E8DC;
    --color-secondary-300: #B3DCC7;
    --color-secondary-400: #94D0B2;
    --color-secondary-500: #236B55;
    --color-secondary-600: #1B503F;
    --color-secondary-700: #133A2C;
    --color-secondary-800: #0C2519;
    --color-secondary-900: #051006;

    /* ACCENT COLORS */
    --color-accent-gold: #F4C84E;
    --color-accent-gold-light: #FFF8E7;
    --color-accent-gold-dark: #D4A636;

    /* SEMANTIC COLORS */
    --color-success: #10B981;
    --color-success-light: #D1F4E8;
    --color-success-dark: #047857;
    
    --color-warning: #F59E0B;
    --color-warning-light: #FEF3C7;
    --color-warning-dark: #D97706;
    
    --color-danger: #EF4444;
    --color-danger-light: #FEE2E2;
    --color-danger-dark: #DC2626;
    
    --color-info: #3B82F6;
    --color-info-light: #DBEAFE;
    --color-info-dark: #1D4ED8;

    /* NEUTRAL COLORS */
    --color-white: #FFFFFF;
    --color-neutral-50: #F8FAF7;
    --color-neutral-100: #F0F5F2;
    --color-neutral-200: #E0EAEB;
    --color-neutral-300: #D1DFE1;
    --color-neutral-400: #B3C4C8;
    --color-neutral-500: #8FA7AB;
    --color-neutral-600: #6B8A8F;
    --color-neutral-700: #475E63;
    --color-neutral-800: #2D3B41;
    --color-neutral-900: #263A33;

    /* BACKGROUND & SURFACE */
    --color-background: #F8FAF7;
    --color-surface: #FFFFFF;
    --color-surface-hover: #F5F8F6;
    --color-surface-muted: #E6F1EB;
    --color-surface-overlay: rgba(255, 255, 255, 0.95);

    /* TEXT COLORS */
    --color-text-primary: #263A33;
    --color-text-secondary: #6B8A8F;
    --color-text-tertiary: #8FA7AB;
    --color-text-inverse: #FFFFFF;
    --color-text-muted: #B3C4C8;

    /* BORDER COLORS */
    --color-border-light: rgba(16, 63, 50, 0.08);
    --color-border-base: rgba(16, 63, 50, 0.12);
    --color-border-medium: rgba(16, 63, 50, 0.2);
    --color-border-strong: rgba(16, 63, 50, 0.3);

    /* ============================================================
       TYPOGRAPHY TOKENS
       ============================================================ */

    /* Font Families */
    --font-family-sans: 'Inter', 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', sans-serif;
    --font-family-mono: 'Menlo', 'Monaco', 'Courier New', monospace;

    /* 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;

    /* Font Sizes - Scale */
    --font-size-xs: 0.75rem;        /* 12px */
    --font-size-sm: 0.875rem;       /* 14px */
    --font-size-base: 1rem;         /* 16px */
    --font-size-lg: 1.125rem;       /* 18px */
    --font-size-xl: 1.25rem;        /* 20px */
    --font-size-2xl: 1.5rem;        /* 24px */
    --font-size-3xl: 1.875rem;      /* 30px */
    --font-size-4xl: 2.25rem;       /* 36px */
    --font-size-5xl: 3rem;          /* 48px */

    /* Line Heights */
    --line-height-tight: 1.2;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
    --line-height-loose: 2;

    /* Letter Spacing */
    --letter-spacing-tight: -0.02em;
    --letter-spacing-normal: 0;
    --letter-spacing-wide: 0.02em;
    --letter-spacing-wider: 0.05em;

    /* ============================================================
       SPACING RHYTHM TOKENS
       ============================================================ */

    --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 */

    /* ============================================================
       SHADOW TOKENS - REALISTIC ELEVATION
       ============================================================ */

    /* Subtle shadow (very small elements, 1px elevation) */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);

    /* Small shadow (inputs, small cards, 2px elevation) */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.08);

    /* Base shadow (cards, 4px elevation) */
    --shadow-base: 0 4px 8px rgba(0, 0, 0, 0.1);

    /* Medium shadow (modals, 8px elevation) */
    --shadow-md: 0 8px 16px rgba(0, 0, 0, 0.12);

    /* Large shadow (dropdowns, tooltips, 12px elevation) */
    --shadow-lg: 0 12px 24px rgba(0, 0, 0, 0.15);

    /* Extra large shadow (notifications, full-screen overlays) */
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);

    /* Focus ring (accessibility) */
    --shadow-focus: 0 0 0 3px rgba(35, 107, 85, 0.1), 0 0 0 2px var(--color-primary);

    /* ============================================================
       ROUNDED CORNERS TOKENS
       ============================================================ */

    --radius-none: 0;
    --radius-xs: 4px;
    --radius-sm: 6px;
    --radius-base: 8px;
    --radius-md: 10px;
    --radius-lg: 12px;
    --radius-xl: 14px;
    --radius-2xl: 16px;
    --radius-3xl: 20px;
    --radius-full: 9999px;

    /* ============================================================
       TRANSITION & ANIMATION TOKENS
       ============================================================ */

    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slower: 400ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Z-index scale */
    --z-dropdown: 1000;
    --z-modal-overlay: 2000;
    --z-modal: 2100;
    --z-notification: 3000;
    --z-navbar: 100;
    --z-sidebar: 50;
}

/* ============================================================
   DARK MODE THEME OVERRIDES
   ============================================================ */

@media (prefers-color-scheme: dark) {
    :root {
        /* DARK MODE BACKGROUND & SURFACE */
        --color-background: #0F1E19;
        --color-surface: #152A23;
        --color-surface-hover: #1B332B;
        --color-surface-muted: #1B332B;
        --color-surface-overlay: rgba(21, 42, 35, 0.95);

        /* DARK MODE TEXT */
        --color-text-primary: #EDF5F1;
        --color-text-secondary: #B3C4C8;
        --color-text-tertiary: #8FA7AB;
        --color-text-inverse: #0F1E19;
        --color-text-muted: #6B8A8F;

        /* DARK MODE BORDER */
        --color-border-light: rgba(237, 245, 241, 0.08);
        --color-border-base: rgba(237, 245, 241, 0.12);
        --color-border-medium: rgba(237, 245, 241, 0.2);
        --color-border-strong: rgba(237, 245, 241, 0.3);

        /* DARK MODE EMERALD (ADJUSTED FOR CONTRAST) */
        --color-secondary: #4D9D7B;

        /* DARK MODE SEMANTIC */
        --color-success: #10B981;
        --color-warning: #F59E0B;
        --color-danger: #EF4444;
        --color-info: #60A5FA;
    }
}

/* ============================================================
   SHARED COMPONENT UTILITIES
   ============================================================ */

/* Typography Utilities */
.text-h1 {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    letter-spacing: var(--letter-spacing-tight);
}

.text-h2 {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    letter-spacing: var(--letter-spacing-tight);
}

.text-h3 {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
}

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

.text-h5 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-normal);
}

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

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

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

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

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

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

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

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

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

.text-danger {
    color: var(--color-danger);
}

.text-info {
    color: var(--color-info);
}

/* Spacing Utilities */
.m-0 { margin: var(--space-0); }
.m-1 { margin: var(--space-1); }
.m-2 { margin: var(--space-2); }
.m-3 { margin: var(--space-3); }
.m-4 { margin: var(--space-4); }
.m-6 { margin: var(--space-6); }
.m-8 { margin: var(--space-8); }

.mx-auto { margin-left: auto; margin-right: auto; }
.my-4 { margin-top: var(--space-4); margin-bottom: var(--space-4); }

.p-0 { padding: var(--space-0); }
.p-2 { padding: var(--space-2); }
.p-3 { padding: var(--space-3); }
.p-4 { padding: var(--space-4); }
.p-6 { padding: var(--space-6); }
.p-8 { padding: var(--space-8); }

.px-4 { padding-left: var(--space-4); padding-right: var(--space-4); }
.py-4 { padding-top: var(--space-4); padding-bottom: var(--space-4); }

.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }

/* Card Utilities */
.card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-2xl);
    padding: var(--space-6);
    box-shadow: var(--shadow-base);
    transition: all var(--transition-normal);
}

.card:hover {
    border-color: var(--color-border-medium);
    box-shadow: var(--shadow-md);
}

.card-sm {
    padding: var(--space-4);
    border-radius: var(--radius-lg);
}

.card-lg {
    padding: var(--space-8);
    border-radius: var(--radius-3xl);
}

/* Button Base Utilities */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    border: none;
    border-radius: var(--radius-base);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
    user-select: none;
}

.btn:focus-visible {
    outline: none;
    box-shadow: var(--shadow-focus);
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-text-inverse);
}

.btn-primary:hover {
    background-color: var(--color-primary-600);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.btn-primary:active {
    background-color: var(--color-primary-800);
    transform: translateY(0);
}

.btn-secondary {
    background-color: var(--color-surface-muted);
    color: var(--color-primary);
    border: 1px solid var(--color-border-medium);
}

.btn-secondary:hover {
    background-color: var(--color-secondary-100);
    border-color: var(--color-primary);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
}

.btn-outline:hover {
    background-color: var(--color-primary-50);
}

.btn-ghost {
    background-color: transparent;
    color: var(--color-text-primary);
    border: none;
}

.btn-ghost:hover {
    background-color: var(--color-surface-hover);
}

.btn-danger {
    background-color: var(--color-danger);
    color: var(--color-text-inverse);
}

.btn-danger:hover {
    background-color: var(--color-danger-dark);
    transform: translateY(-1px);
}

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

.btn-success:hover {
    background-color: var(--color-success-dark);
    transform: translateY(-1px);
}

.btn-sm {
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-xs);
}

.btn-lg {
    padding: var(--space-4) var(--space-6);
    font-size: var(--font-size-base);
    border-radius: var(--radius-md);
}

.btn-block {
    width: 100%;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Form Utilities */
.form-group {
    margin-bottom: var(--space-6);
}

.form-label {
    display: block;
    margin-bottom: var(--space-2);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

.form-control {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-size: var(--font-size-base);
    border: 1px solid var(--color-border-base);
    border-radius: var(--radius-base);
    background-color: var(--color-surface);
    color: var(--color-text-primary);
    font-family: var(--font-family-sans);
    transition: all var(--transition-fast);
}

.form-control::placeholder {
    color: var(--color-text-tertiary);
}

.form-control:hover {
    border-color: var(--color-border-medium);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: var(--shadow-focus);
}

.form-control.is-invalid {
    border-color: var(--color-danger);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* Alert Utilities */
.alert {
    padding: var(--space-4);
    border-radius: var(--radius-base);
    border: 1px solid;
    margin-bottom: var(--space-4);
}

.alert-success {
    background-color: var(--color-success-light);
    border-color: var(--color-success);
    color: var(--color-success-dark);
}

.alert-warning {
    background-color: var(--color-warning-light);
    border-color: var(--color-warning);
    color: var(--color-warning-dark);
}

.alert-danger {
    background-color: var(--color-danger-light);
    border-color: var(--color-danger);
    color: var(--color-danger-dark);
}

.alert-info {
    background-color: var(--color-info-light);
    border-color: var(--color-info);
    color: var(--color-info-dark);
}

/* Grid & Flexbox Utilities */
.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

.flex-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.grid {
    display: grid;
}

.grid-cols-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-cols-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-cols-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* Responsive Grid */
@media (max-width: 768px) {
    .grid-cols-2 {
        grid-template-columns: 1fr;
    }
    .grid-cols-3 {
        grid-template-columns: repeat(2, 1fr);
    }
    .grid-cols-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Border Utilities */
.border {
    border: 1px solid var(--color-border-base);
}

.border-t {
    border-top: 1px solid var(--color-border-base);
}

.border-b {
    border-bottom: 1px solid var(--color-border-base);
}

.rounded {
    border-radius: var(--radius-base);
}

.rounded-lg {
    border-radius: var(--radius-lg);
}

.rounded-2xl {
    border-radius: var(--radius-2xl);
}

.rounded-full {
    border-radius: var(--radius-full);
}

/* Shadow Utilities */
.shadow-sm {
    box-shadow: var(--shadow-sm);
}

.shadow {
    box-shadow: var(--shadow-base);
}

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

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

/* Opacity Utilities */
.opacity-50 {
    opacity: 0.5;
}

.opacity-75 {
    opacity: 0.75;
}

/* Display Utilities */
.hidden {
    display: none;
}

.visible {
    display: block;
}

@media (max-width: 768px) {
    .hidden-mobile {
        display: none;
    }
}

@media (min-width: 768px) {
    .visible-desktop-only {
        display: block;
    }
}

/* ============================================================
   ANIMATION DEFINITIONS
   ============================================================ */

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideLeft {
    from {
        opacity: 0;
        transform: translateX(10px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

@keyframes breathe {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* Animation Utility Classes */
.animate-fade-in {
    animation: fadeIn var(--transition-normal) ease-out;
}

.animate-slide-up {
    animation: slideUp var(--transition-normal) ease-out;
}

.animate-slide-down {
    animation: slideDown var(--transition-normal) ease-out;
}

.animate-pulse {
    animation: pulse 2s ease-in-out infinite;
}

.animate-breathe {
    animation: breathe 4s ease-in-out infinite;
}

.animate-spin {
    animation: spin 1s linear infinite;
}

/* MinSuansCore design-system contract (shared component aliases) */
:root {
    --ms-forest: var(--color-primary, #103F32);
    --ms-emerald: var(--color-secondary, #236B55);
    --ms-gold: var(--color-accent-gold, #F4C84E);
    --ms-mint: var(--color-secondary-100, #E6F1EB);
    --ms-cream: var(--color-background, #F8FAF7);
    --ms-ink: var(--color-text-primary, #263A33);
    --ms-muted: var(--color-text-secondary, #708179);
    --ms-border: var(--color-border-light, rgba(16, 63, 50, .14));
    --ms-radius-card: var(--radius-2xl, 1.25rem);
    --ms-radius-control: var(--radius-lg, .75rem);
    --ms-shadow-card: 0 16px 42px rgba(16, 63, 50, .075);
    --ms-shadow-elevated: 0 18px 48px rgba(16, 63, 50, .14);
    --ms-ease-standard: cubic-bezier(.4, 0, .2, 1);
    --ms-ease-emphasis: cubic-bezier(.22, 1, .36, 1);
}
@media (prefers-reduced-motion: reduce) {
    :root {
        --transition-fast: 0ms;
        --transition-normal: 0ms;
        --transition-slow: 0ms;
        --transition-slower: 0ms;
    }
}