/* ============================================
   Stories Hut - Global Styles
   Design System & Base Styles
   ============================================ */

/* ============================================
   CSS Custom Properties (Design Tokens)
   ============================================ */
:root {
    /* Colors - Primary */
    --color-primary: #4F46E5;
    --color-primary-hover: #4338CA;
    --color-primary-light: #818CF8;

    /* Colors - Accent */
    --color-accent: #10B981;
    --color-accent-hover: #059669;

    /* Colors - Neutrals */
    --color-gray-50: #F9FAFB;
    --color-gray-100: #F3F4F6;
    --color-gray-300: #D1D5DB;
    --color-gray-500: #6B7280;
    --color-gray-600: #4B5563;
    --color-gray-700: #374151;
    --color-gray-900: #111827;

    /* Colors - Semantic */
    --color-success: #10B981;
    --color-error: #EF4444;
    --color-warning: #F59E0B;
    --color-info: #3B82F6;

    /* Premium Design Tokens */
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: 1px solid rgba(255, 255, 255, 0.6);
    --backdrop-blur: blur(12px);
    --gradient-hero: linear-gradient(135deg, #EEF2FF 0%, #E0E7FF 50%, #F5F3FF 100%);
    --gradient-primary: linear-gradient(135deg, #4F46E5 0%, #4338CA 100%);

    /* Typography - Font Families */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-serif: 'Merriweather', Georgia, serif;

    /* Typography - Font Sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;

    /* Typography - Font Weights */
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    --font-extrabold: 800;

    /* Typography - Line Heights */
    --leading-tight: 1.25;
    --leading-normal: 1.6;
    /* Increased for better readability */
    --leading-relaxed: 1.8;

    /* Spacing Scale */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    /* Increased for softer look */
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    /* Softer base shadow */
    --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, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 10px 10px -5px rgba(0, 0, 0, 0.03);
    --shadow-premium: 0 20px 40px -5px rgba(79, 70, 229, 0.1), 0 10px 20px -5px rgba(0, 0, 0, 0.04);
    /* Colored shadow */

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 400ms cubic-bezier(0.34, 1.56, 0.64, 1);
    /* Bouncy feel */

    /* Container Max Width */
    --container-max-width: 1280px;
    --container-padding: var(--space-6);

    /* Z-Index Scale */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-toast: 1060;
}

/* ============================================
   CSS Reset & Base Styles
   ============================================ */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    font-weight: var(--font-normal);
    line-height: var(--leading-normal);
    color: var(--color-gray-900);
    background-color: white;
    overflow-x: hidden;
}

/* Typography Base */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: var(--font-semibold);
    line-height: var(--leading-tight);
    color: var(--color-gray-900);
    margin-bottom: var(--space-4);
}

h1 {
    font-size: var(--text-4xl);
    font-weight: var(--font-extrabold);
}

h2 {
    font-size: var(--text-2xl);
    font-weight: var(--font-semibold);
}

h3 {
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
}

p {
    margin-bottom: var(--space-4);
    color: var(--color-gray-700);
}

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

a:hover {
    color: var(--color-primary-hover);
}

a:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul,
ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input,
textarea,
select {
    font-family: inherit;
    font-size: inherit;
}

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

/* Container */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
}

/* Section Spacing */
.section {
    padding-top: var(--space-16);
    padding-bottom: var(--space-16);
}

/* Text Utilities */
.text-center {
    text-align: center;
}

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

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

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

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

.text-gray-500 {
    color: var(--color-gray-500);
}

.text-gray-600 {
    color: var(--color-gray-600);
}

.text-gray-700 {
    color: var(--color-gray-700);
}

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

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

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

.font-extrabold {
    font-weight: var(--font-extrabold);
}

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

.block {
    display: block;
}

.inline-block {
    display: inline-block;
}

.flex {
    display: flex;
}

.inline-flex {
    display: inline-flex;
}

.grid {
    display: grid;
}

/* Flexbox Utilities */
.flex-row {
    flex-direction: row;
}

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

.items-center {
    align-items: center;
}

.items-start {
    align-items: flex-start;
}

.items-end {
    align-items: flex-end;
}

.justify-center {
    justify-content: center;
}

.justify-between {
    justify-content: space-between;
}

.justify-start {
    justify-content: flex-start;
}

.justify-end {
    justify-content: flex-end;
}

.flex-wrap {
    flex-wrap: wrap;
}

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

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

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

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

.gap-8 {
    gap: var(--space-8);
}

/* Grid Utilities */
.grid-cols-1 {
    grid-template-columns: repeat(1, minmax(0, 1fr));
}

.grid-cols-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-cols-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-cols-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

/* Spacing Utilities */
.mt-2 {
    margin-top: var(--space-2);
}

.mt-4 {
    margin-top: var(--space-4);
}

.mt-6 {
    margin-top: var(--space-6);
}

.mt-8 {
    margin-top: var(--space-8);
}

.mb-2 {
    margin-bottom: var(--space-2);
}

.mb-4 {
    margin-bottom: var(--space-4);
}

.mb-6 {
    margin-bottom: var(--space-6);
}

.mb-8 {
    margin-bottom: var(--space-8);
}

.ml-auto {
    margin-left: auto;
}

.mr-auto {
    margin-right: auto;
}

.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);
}

.px-6 {
    padding-left: var(--space-6);
    padding-right: var(--space-6);
}

.py-2 {
    padding-top: var(--space-2);
    padding-bottom: var(--space-2);
}

.py-3 {
    padding-top: var(--space-3);
    padding-bottom: var(--space-3);
}

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

.py-16 {
    padding-top: var(--space-16);
    padding-bottom: var(--space-16);
}

/* Width Utilities */
.w-full {
    width: 100%;
}

.max-w-md {
    max-width: 28rem;
}

.max-w-lg {
    max-width: 32rem;
}

.max-w-xl {
    max-width: 36rem;
}

.max-w-2xl {
    max-width: 42rem;
}

.max-w-4xl {
    max-width: 56rem;
}

.max-w-6xl {
    max-width: 72rem;
}

/* Background Utilities */
.bg-white {
    background-color: white;
}

.bg-gray-50 {
    background-color: var(--color-gray-50);
}

.bg-gray-100 {
    background-color: var(--color-gray-100);
}

.bg-primary {
    background-color: var(--color-primary);
}

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

/* Border Utilities */
.rounded {
    border-radius: var(--radius-md);
}

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

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

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

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

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

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

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

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

/* Transition Utilities */
.transition {
    transition: all var(--transition-base);
}

.transition-fast {
    transition: all var(--transition-fast);
}

/* Overflow Utilities */
.overflow-hidden {
    overflow: hidden;
}

.overflow-auto {
    overflow: auto;
}

/* Position Utilities */
.relative {
    position: relative;
}

.absolute {
    position: absolute;
}

.fixed {
    position: fixed;
}

.sticky {
    position: sticky;
}

/* ============================================
   Responsive Breakpoints
   ============================================ */

/* Tablet (640px and up) */
@media (min-width: 640px) {
    :root {
        --container-padding: var(--space-8);
    }

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

    .sm\:grid-cols-2 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .sm\:grid-cols-3 {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .sm\:text-lg {
        font-size: var(--text-lg);
    }

    .sm\:text-xl {
        font-size: var(--text-xl);
    }

    .sm\:text-2xl {
        font-size: var(--text-2xl);
    }
}

/* Desktop (1024px and up) */
@media (min-width: 1024px) {
    .section {
        padding-top: var(--space-20);
        padding-bottom: var(--space-20);
    }

    .lg\:grid-cols-3 {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .lg\:grid-cols-4 {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }

    .lg\:flex-row {
        flex-direction: row;
    }

    .lg\:text-4xl {
        font-size: var(--text-4xl);
    }

    .lg\:text-5xl {
        font-size: var(--text-5xl);
    }
}

/* ============================================
   Animation Keyframes
   ============================================ */

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

.animate-fadeIn {
    animation: fadeIn var(--transition-base) ease-out;
}

.animate-slideDown {
    animation: slideDown var(--transition-base) ease-out;
}

.animate-slideUp {
    animation: slideUp var(--transition-base) ease-out;
}

.animate-scaleIn {
    animation: scaleIn var(--transition-base) ease-out;
}

/* ============================================
   Accessibility
   ============================================ */

/* Skip to main content link */
.skip-to-main {
    position: absolute;
    top: -100px;
    left: 0;
    background: var(--color-primary);
    color: white;
    padding: var(--space-3) var(--space-6);
    text-decoration: none;
    border-radius: var(--radius-md);
    z-index: var(--z-toast);
}

.skip-to-main:focus {
    top: var(--space-4);
    left: var(--space-4);
}

/* Focus visible styles */
*:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Screen reader only */
.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;
}