/**
 * @file: global.css
 * @description: Global styling for SYSKEVASIA Expo - CSS variables, typography, buttons, cards, responsive design
 * @tags: #styles #global #responsive #design
 */

/* ========================================
   CSS VARIABLES
   ======================================== */
:root {
    /* ============================================================
       DESIGN SYSTEM — BRAND SCALE (single source of truth)
       Generated around the brand color #f15b2e (brand-500).
       Mirrored in libs/tailwind-config.js (brand.50…900).
       ============================================================ */
    --brand-50:  #fef4f0;
    --brand-100: #fde5db;
    --brand-200: #fbc8b6;
    --brand-300: #f8a486;
    --brand-400: #f47d56;
    --brand-500: #f15b2e; /* identity / brand color */
    --brand-600: #ca4c27; /* AA-safe: ↔ white 4.59:1 */
    --brand-700: #a63f20; /* AA-safe hover / text-on-white 6.26:1 */
    --brand-800: #852f17;
    --brand-900: #5f2210;
    --ink:       #1c1c1b;

    /* ---- Semantic tokens (WCAG-AA-safe pairings) ----
       primary (#ca4c27) on white  : 4.59:1  ✓ AA normal text
       white on primary (#ca4c27)  : 4.59:1  ✓ AA normal text
       muted  (#525252) on white   : 7.81:1  ✓ AA
       text   (ink)     on surface : 17:1    ✓ AAA
       brand  (#f15b2e) on white   : 3.35:1  → decorative / large text / graphics only */
    --color-brand: #f15b2e;            /* decorative brand accent (large text / graphics) */
    --color-primary: #ca4c27;          /* interactive: links, primary fills, focus (AA) */
    --color-primary-hover: #a63f20;
    --color-primary-light: #f47d56;
    --color-on-primary: #ffffff;
    --color-surface: #ffffff;
    --color-surface-muted: #f8f9fa;
    --color-text: #1c1c1b;
    --color-muted: #525252;            /* secondary text, AA on white */
    --color-border: #e5e7eb;
    --color-focus-ring: #f15b2e;

    /* Legacy aliases (kept for backward compatibility) */
    --color-dark: #000000;
    --color-dark-gray: #1c1c1b;
    --color-light: #f8f9fa;
    --color-white: #ffffff;

    /* Gray Scale */
    --color-gray-100: #f8f9fa;
    --color-gray-200: #e9ecef;
    --color-gray-300: #dee2e6;
    --color-gray-400: #ced4da;
    --color-gray-500: #adb5bd;
    --color-gray-600: #6c757d;
    --color-gray-700: #495057;
    --color-gray-800: #343a40;
    --color-gray-900: #212529;

    /* Semantic Colors */
    --color-success: #28a745;
    --color-warning: #ffc107;
    --color-error: #dc3545;
    --color-info: #17a2b8;

    /* Typography */
    --font-family-primary: 'Noto Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-family-heading: 'Fira Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;

    --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 */

    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;

    /* Spacing */
    --spacing-xs: 0.25rem;    /* 4px */
    --spacing-sm: 0.5rem;     /* 8px */
    --spacing-md: 1rem;       /* 16px */
    --spacing-lg: 1.5rem;     /* 24px */
    --spacing-xl: 2rem;       /* 32px */
    --spacing-2xl: 3rem;      /* 48px */
    --spacing-3xl: 4rem;      /* 64px */

    /* Border Radius */
    --radius-sm: 0.25rem;     /* 4px */
    --radius-md: 0.5rem;      /* 8px */
    --radius-lg: 0.75rem;     /* 12px */
    --radius-xl: 1rem;        /* 16px */
    --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-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* ========================================
   ALPINE.JS CLOAK (hide elements until Alpine initializes)
   ======================================== */
[x-cloak] { display: none !important; }

/* ========================================
   GLOBAL RESETS & BASE STYLES
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family-primary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-gray-900);
    background-color: var(--color-light);
}

/* ========================================
   TYPOGRAPHY
   ======================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-heading);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    color: var(--color-dark);
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: var(--font-size-5xl);
}

h2 {
    font-size: var(--font-size-4xl);
}

h3 {
    font-size: var(--font-size-3xl);
}

h4 {
    font-size: var(--font-size-2xl);
}

h5 {
    font-size: var(--font-size-xl);
}

h6 {
    font-size: var(--font-size-lg);
}

p {
    margin-bottom: var(--spacing-md);
    line-height: var(--line-height-relaxed);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

/* Use :where() to give zero specificity so Tailwind utility classes (text-white etc.)
   can override this on button-style anchors without needing hover: variants. */
:where(a):hover {
    color: var(--color-primary-hover);
}

/* ========================================
   BUTTONS
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    line-height: 1.5;
    text-align: center;
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Primary Button */
.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

/* Secondary Button (Outline) */
.btn-secondary {
    background-color: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Dark Button */
.btn-dark {
    background-color: var(--color-dark);
    color: var(--color-white);
    border-color: var(--color-dark);
}

.btn-dark:hover:not(:disabled) {
    background-color: var(--color-gray-800);
    border-color: var(--color-gray-800);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Light Button */
.btn-light {
    background-color: var(--color-white);
    color: var(--color-dark);
    border-color: var(--color-gray-300);
}

.btn-light:hover:not(:disabled) {
    background-color: var(--color-gray-100);
    border-color: var(--color-gray-400);
    color: var(--color-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Button Sizes */
.btn-sm {
    padding: 0.5rem 1rem;
    font-size: var(--font-size-sm);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: var(--font-size-lg);
}

.btn-block {
    width: 100%;
    display: flex;
}

/* ========================================
   CARDS
   ======================================== */
.card {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
}

.card-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-200);
}

.card-body {
    padding: var(--spacing-lg);
}

.card-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-200);
    background-color: var(--color-gray-100);
}

.card-img-top {
    width: 100%;
    height: auto;
    display: block;
}

/* Card Variants */
.card-bordered {
    border: 1px solid var(--color-gray-300);
    box-shadow: none;
}

.card-flat {
    box-shadow: none;
}

.card-hover-primary:hover {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(255, 140, 0, 0.1);
}

/* ========================================
   FORMS
   ======================================== */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-700);
}

.form-control {
    display: block;
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--color-gray-900);
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
    outline: 0;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(255, 140, 0, 0.1);
}

.form-control:disabled {
    background-color: var(--color-gray-100);
    opacity: 0.6;
    cursor: not-allowed;
}

textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

.form-text {
    display: block;
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

.form-error {
    display: block;
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--color-error);
}

/* ========================================
   UTILITIES
   ======================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
}

.container-fluid {
    width: 100%;
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
}

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

/* Text Colors */
.text-primary { color: var(--color-primary); }
.text-dark { color: var(--color-dark); }
.text-white { color: var(--color-white); }
.text-muted { color: var(--color-gray-600); }

/* Background Colors */
.bg-primary { background-color: var(--color-primary); }
.bg-dark { background-color: var(--color-dark); }
.bg-light { background-color: var(--color-light); }
.bg-white { background-color: var(--color-white); }

/* Spacing Utilities */
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.pt-1 { padding-top: var(--spacing-xs); }
.pt-2 { padding-top: var(--spacing-sm); }
.pt-3 { padding-top: var(--spacing-md); }
.pt-4 { padding-top: var(--spacing-lg); }
.pt-5 { padding-top: var(--spacing-xl); }

.pb-1 { padding-bottom: var(--spacing-xs); }
.pb-2 { padding-bottom: var(--spacing-sm); }
.pb-3 { padding-bottom: var(--spacing-md); }
.pb-4 { padding-bottom: var(--spacing-lg); }
.pb-5 { padding-bottom: var(--spacing-xl); }

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

/* Flexbox */
.flex-row { flex-direction: row; }
.flex-column { flex-direction: column; }
.justify-start { justify-content: flex-start; }
.justify-center { justify-content: center; }
.justify-end { justify-content: flex-end; }
.justify-between { justify-content: space-between; }
.align-start { align-items: flex-start; }
.align-center { align-items: center; }
.align-end { align-items: flex-end; }
.gap-1 { gap: var(--spacing-xs); }
.gap-2 { gap: var(--spacing-sm); }
.gap-3 { gap: var(--spacing-md); }
.gap-4 { gap: var(--spacing-lg); }

/* ========================================
   RESPONSIVE BREAKPOINTS
   ======================================== */

/* Small devices (landscape phones, 576px and up) */
@media (min-width: 576px) {
    .container {
        max-width: 540px;
    }

    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
}

/* Medium devices (tablets, 768px and up) */
@media (min-width: 768px) {
    .container {
        max-width: 720px;
        padding-left: var(--spacing-lg);
        padding-right: var(--spacing-lg);
    }

    .d-md-block { display: block; }
    .d-md-flex { display: flex; }
    .d-md-none { display: none; }
}

/* Large devices (desktops, 992px and up) */
@media (min-width: 992px) {
    .container {
        max-width: 960px;
    }

    .d-lg-block { display: block; }
    .d-lg-flex { display: flex; }
    .d-lg-none { display: none; }
}

/* Extra large devices (large desktops, 1200px and up) */
@media (min-width: 1200px) {
    .container {
        max-width: 1140px;
    }

    .d-xl-block { display: block; }
    .d-xl-flex { display: flex; }
    .d-xl-none { display: none; }
}

/* ========================================
   ANIMATIONS & TRANSITIONS
   ======================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.slide-in-up {
    animation: slideInUp var(--transition-normal);
}

.slide-in-down {
    animation: slideInDown var(--transition-normal);
}

/* Hover Effects */
.hover-lift {
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.hover-lift:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.hover-scale {
    transition: transform var(--transition-normal);
}

.hover-scale:hover {
    transform: scale(1.05);
}

/* ========================================
   ACCESSIBILITY
   ======================================== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

.focus-visible:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* ========================================
   PRINT STYLES
   ======================================== */
@media print {
    *,
    *::before,
    *::after {
        background: transparent !important;
        color: #000 !important;
        box-shadow: none !important;
        text-shadow: none !important;
    }

    a,
    a:visited {
        text-decoration: underline;
    }

    a[href]::after {
        content: " (" attr(href) ")";
    }

    img {
        page-break-inside: avoid;
    }

    p,
    h2,
    h3 {
        orphans: 3;
        widows: 3;
    }

    h2,
    h3 {
        page-break-after: avoid;
    }
}

/* ========================================
   DESIGN SYSTEM — ICONS
   Default sizing for sprite icons rendered via Icon::svg() / icon().
   Prevents "giant SVG" flashes before utility classes apply.
   ======================================== */
.icon {
    display: inline-block;
    width: 1.25rem;
    height: 1.25rem;
    flex-shrink: 0;
    vertical-align: middle;
    stroke: currentColor;
    fill: none;
    line-height: 0;
}

svg[class*="w-"],
svg[class*="h-"] {
    flex-shrink: 0;
}

/* ========================================
   ACCESSIBILITY & MOTION
   ======================================== */
/* Alpine.js: hide elements with x-cloak until Alpine initializes */
[x-cloak] {
    display: none !important;
}

/* Keyboard focus ring (only for keyboard users, not mouse clicks) */
:focus-visible {
    outline: 2px solid var(--color-focus-ring);
    outline-offset: 2px;
    border-radius: 2px;
}

/* Respect users who prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
        scroll-behavior: auto !important;
    }
}

/* ========================================
   COMPONENTS — SPONSORS
   (moved out of the inline <style> in main.php — single source of truth)
   ======================================== */
.sponsor-tab {
    background: var(--color-white);
    color: var(--ink);
    border: 2px solid var(--color-border);
}

.sponsor-tab.active {
    background: var(--color-brand);
    color: var(--color-white);
    border-color: var(--color-brand);
}

.sponsor-tab:hover:not(.active) {
    border-color: var(--color-brand);
    color: var(--color-primary); /* AA-safe text on white */
}

.sponsor-category {
    display: none;
}

.sponsor-category.active {
    display: block;
}

.sponsors-carousel {
    overflow: hidden;
    padding: 24px 0;
}

.sponsors-track {
    display: flex;
    gap: 48px;
    /* Alpine.js handles carousel movement via :style="trackStyle" */
}

.sponsor-item {
    flex-shrink: 0;
    width: 200px;
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    background: var(--color-white);
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.sponsor-item img {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    filter: grayscale(100%);
    opacity: 0.7;
    transition: all 0.3s ease;
}

.sponsor-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.12);
}

.sponsor-item:hover img {
    filter: grayscale(0%);
    opacity: 1;
}

@media (max-width: 768px) {
    .sponsor-item {
        width: 160px;
        height: 160px;
    }

    .sponsors-track {
        gap: 24px;
    }

    .sponsor-tab {
        font-size: 0.875rem;
        padding: 0.625rem 1rem;
    }
}

/* ========================================
   COMPONENTS — PORTFOLIO
   ======================================== */
.portfolio-filter {
    background: var(--color-white);
    color: var(--ink);
    border: 2px solid var(--color-border);
}

.portfolio-filter.active {
    background: var(--color-brand);
    color: var(--color-white);
    border-color: var(--color-brand);
}

.portfolio-filter:hover:not(.active) {
    border-color: var(--color-brand);
    color: var(--color-primary); /* AA-safe text on white */
}

.portfolio-item {
    transition: all 0.3s ease;
}

.portfolio-item.hidden {
    display: none;
}

/* ========================================
   COMPONENTS — PRICING
   ======================================== */
.pricing-card {
    transition: all 0.3s ease;
}

.pricing-card:hover {
    transform: translateY(-4px);
}

.pricing-card.recommended {
    position: relative;
}

@media (max-width: 1024px) {
    .pricing-card.recommended {
        transform: none !important;
        border-width: 2px;
    }

    .pricing-card.recommended:hover {
        transform: translateY(-4px) !important;
    }
}

@media (max-width: 768px) {
    .portfolio-filter {
        font-size: 0.875rem;
        padding: 0.625rem 1rem;
    }
}

/* QA remediation: animated sponsor tracks must not contribute to page scroll width.
   NOTE: overflow-x only on html, NOT body — body overflow breaks position:sticky on header. */
html {
    max-width: 100%;
    overflow-x: clip;
}

.sponsors-carousel-container,
.sponsor-category,
.sponsors-carousel {
    max-width: 100%;
    overflow-x: clip;
    contain: paint;
}