/* ============================================
   Turn The Page Club - Main Styles
   Theme: "The Reading Nook"
   ============================================ */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;500;600;700&family=Lato:wght@300;400;700&display=swap');

/* ============================================
   CSS Custom Properties
   ============================================ */
:root {
    /* Colors - Teal Book Theme */
    --color-primary: #2A7C7C;        /* Teal - book binding */
    --color-primary-dark: #1D5F5F;   /* Darker teal */
    --color-primary-light: #3D9A9A;  /* Lighter teal */
    --color-secondary: #FDF8F3;      /* Warm cream - aged paper */
    --color-secondary-dark: #F5EDE3; /* Darker cream */
    --color-accent: #E8985A;         /* Warm copper/terracotta */
    --color-accent-light: #F0B078;   /* Light copper */
    --color-text: #2D3640;           /* Dark blue-gray - ink */
    --color-text-light: #5A6670;     /* Lighter blue-gray */
    --color-white: #FFFFFF;
    --color-black: #1A1A1A;

    /* Typography */
    --font-heading: 'Playfair Display', Georgia, serif;
    --font-body: 'Lato', 'Segoe UI', sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 5rem;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(61, 41, 20, 0.1);
    --shadow-md: 0 4px 12px rgba(61, 41, 20, 0.15);
    --shadow-lg: 0 8px 24px rgba(61, 41, 20, 0.2);

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Header height */
    --header-height: 80px;
    --nav-bookmark-height: 50px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-secondary);
    background-image: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23d4a574' fill-opacity='0.05'%3E%3Cpath d='M0 0h50v50H0zM50 50h50v50H50z'/%3E%3C/g%3E%3C/svg%3E");
    min-height: 100vh;
}

/* Paper texture overlay */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%' height='100%' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
    z-index: -1;
}

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

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

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

ul, ol {
    list-style: none;
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
    font-size: 1.25rem;
}

p {
    margin-bottom: var(--spacing-sm);
}

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

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

/* ============================================
   Layout Utilities
   ============================================ */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-header p {
    font-size: 1.125rem;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   Header & Navigation
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: linear-gradient(to bottom, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    box-shadow: var(--shadow-md);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
    padding: 0 var(--spacing-md);
    max-width: 1400px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-white);
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    z-index: 1001;
}

.logo img {
    height: 147px;
    width: auto;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.logo-text .tagline {
    font-family: var(--font-body);
    font-size: 0.75rem;
    font-weight: 400;
    opacity: 0.9;
}

/* Bookmark Navigation */
.nav {
    display: flex;
    align-items: flex-start;
    height: 100%;
    padding-top: 15px;
}

.nav-list {
    display: flex;
    gap: 0.5rem;
    height: 100%;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: block;
    position: relative;
    padding: 12px 20px 30px;
    background: var(--color-secondary);
    color: var(--color-text);
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 500;
    text-align: center;
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    transition: all var(--transition-normal);
    min-width: 100px;
    box-shadow: var(--shadow-sm);
}

/* Bookmark ribbon tail */
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 15px solid transparent;
    border-right: 15px solid transparent;
    border-top: 20px solid var(--color-secondary);
    transition: all var(--transition-normal);
}

.nav-link:hover {
    transform: translateY(-5px);
    background: var(--color-accent-light);
    color: var(--color-text);
}

.nav-link:hover::after {
    border-top-color: var(--color-accent-light);
}

.nav-link.active {
    background: var(--color-accent);
    color: var(--color-text);
    transform: translateY(-8px);
}

.nav-link.active::after {
    border-top-color: var(--color-accent);
}

/* Mobile Menu Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    padding: 8px;
    background: var(--color-secondary);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    z-index: 1001;
}

.nav-toggle span {
    display: block;
    width: 100%;
    height: 3px;
    background: var(--color-primary);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* ============================================
   Main Content
   ============================================ */
main {
    margin-top: calc(var(--header-height) + var(--nav-bookmark-height));
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    min-height: calc(100vh - var(--header-height) - var(--nav-bookmark-height));
    display: flex;
    align-items: center;
    padding: var(--spacing-xxl) 0;
    overflow: hidden;
}

.hero .container {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
    width: 100%;
}

.hero-content {
    position: relative;
    z-index: 2;
    flex: 1;
    max-width: 50%;
}

.hero-tagline {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--color-accent);
    color: var(--color-text);
    font-family: var(--font-heading);
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-md);
}

.hero h1 {
    margin-bottom: var(--spacing-md);
}

.hero p {
    font-size: 1.25rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.hero-decoration {
    position: relative;
    flex: 1;
    max-width: 50%;
    width: 100%;
    min-height: 400px;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-image {
    position: absolute;
    width: 100%;
    height: auto;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    filter: opacity(0.5);
}

.hero-image.active {
    opacity: 1;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 14px 28px;
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    border: 2px solid transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-normal);
}

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

.btn-primary:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
    background: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-2px);
}

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

.btn-accent:hover {
    background: var(--color-accent-light);
    border-color: var(--color-accent-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-lg {
    padding: 16px 36px;
    font-size: 1.125rem;
}

.btn-sm {
    padding: 10px 20px;
    font-size: 0.875rem;
}

/* Bookmark-shaped button */
.btn-bookmark {
    position: relative;
    padding-bottom: 24px;
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}

.btn-bookmark::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 12px solid transparent;
    border-right: 12px solid transparent;
    border-top: 16px solid var(--color-primary);
    transition: all var(--transition-normal);
}

.btn-bookmark:hover::after {
    border-top-color: var(--color-primary-dark);
}

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

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.card-content {
    padding: var(--spacing-md);
}

.card-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
}

.card-text {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
}

/* Book-spine card variant */
.card-book {
    position: relative;
    border-left: 8px solid var(--color-primary);
}

.card-book::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(to right, rgba(0,0,0,0.1), transparent);
}

/* ============================================
   Stats Section
   ============================================ */
.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    padding: var(--spacing-xl) 0;
}

.stat-item {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.stat-number {
    display: block;
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 1rem;
    color: var(--color-text-light);
}

/* ============================================
   Programs Grid
   ============================================ */
.programs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

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

.program-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.program-icon {
    width: 60px;
    height: 60px;
    margin-bottom: var(--spacing-sm);
}

.program-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
}

.program-card p {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
}

/* ============================================
   Team Section
   ============================================ */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

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

.team-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.team-photo {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    object-position: center 10%;
    margin: 0 auto var(--spacing-md);
    border: 4px solid var(--color-accent);
}

.team-photo-placeholder {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    margin: 0 auto var(--spacing-md);
    background: linear-gradient(135deg, var(--color-secondary-dark) 0%, var(--color-accent-light) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 4px solid var(--color-accent);
}

.team-photo-placeholder svg {
    width: 60px;
    height: 60px;
    color: var(--color-primary);
}

.team-card h4 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    color: var(--color-primary);
    margin-bottom: 0.25rem;
}

.team-role {
    font-size: 0.875rem;
    color: var(--color-accent);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.team-bio {
    font-size: 0.9rem;
    color: var(--color-text-light);
}

/* ============================================
   Testimonials
   ============================================ */
.testimonials {
    background: var(--color-primary);
    color: var(--color-white);
}

.testimonials .section-header h2 {
    color: var(--color-white);
}

.testimonials .section-header p {
    color: rgba(255, 255, 255, 0.8);
}

.testimonial-card {
    padding: var(--spacing-lg);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
}

.testimonial-quote {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-style: italic;
    margin-bottom: var(--spacing-md);
    position: relative;
    padding-left: var(--spacing-lg);
}

.testimonial-quote::before {
    content: '"';
    position: absolute;
    left: 0;
    top: -10px;
    font-size: 4rem;
    color: var(--color-accent);
    line-height: 1;
}

.testimonial-author {
    font-weight: 600;
    color: var(--color-accent);
}

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

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
    color: var(--color-text);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: 12px 16px;
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--color-text);
    background: var(--color-white);
    border: 2px solid var(--color-secondary-dark);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(139, 38, 53, 0.1);
}

.form-textarea {
    min-height: 150px;
    resize: vertical;
}

.form-checkbox {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-xs);
}

.form-checkbox input {
    margin-top: 4px;
    width: 18px;
    height: 18px;
    accent-color: var(--color-primary);
}

.form-error {
    color: #dc3545;
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

.form-success {
    padding: var(--spacing-md);
    background: #d4edda;
    color: #155724;
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-md);
}

/* ============================================
   Donation Section
   ============================================ */
.donation-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.donation-card {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border: 2px solid transparent;
    transition: all var(--transition-normal);
}

.donation-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.donation-amount {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.donation-impact {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--color-primary-dark);
    color: var(--color-white);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section h4 {
    color: var(--color-accent);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-sm);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-xs);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-accent);
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--color-white);
    transition: all var(--transition-fast);
}

.social-link:hover {
    background: var(--color-accent);
    color: var(--color-text);
    transform: translateY(-3px);
}

.social-link svg {
    width: 20px;
    height: 20px;
}

.footer-bottom {
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
}

/* ============================================
   Book Spine Divider
   ============================================ */
.book-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    margin: var(--spacing-xl) 0;
}

.book-divider::before,
.book-divider::after {
    content: '';
    flex: 1;
    height: 2px;
    background: linear-gradient(to right, transparent, var(--color-accent), transparent);
}

.book-divider-icon {
    width: 40px;
    height: 40px;
    color: var(--color-accent);
}

/* ============================================
   CTA Section
   ============================================ */
.cta-section {
    text-align: center;
    padding: var(--spacing-xxl);
    background: linear-gradient(135deg, var(--color-accent-light) 0%, var(--color-secondary) 100%);
    border-radius: var(--radius-lg);
    margin: var(--spacing-xl) 0;
}

.cta-section h2 {
    margin-bottom: var(--spacing-sm);
}

.cta-section p {
    font-size: 1.125rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ============================================
   Page Header (for inner pages)
   ============================================ */
.page-header {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    padding: var(--spacing-xxl) 0;
    text-align: center;
}

.page-header h1 {
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
}

.page-header p {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    max-width: 600px;
    margin: 0 auto;
}

/* Breadcrumb */
.breadcrumb {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
    font-size: 0.875rem;
}

.breadcrumb a {
    color: rgba(255, 255, 255, 0.7);
}

.breadcrumb a:hover {
    color: var(--color-white);
}

.breadcrumb span {
    color: var(--color-accent);
}

/* ============================================
   Timeline
   ============================================ */
.timeline {
    position: relative;
    padding: var(--spacing-lg) 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--color-accent);
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    width: 50%;
    padding: var(--spacing-md);
}

.timeline-item:nth-child(odd) {
    margin-left: auto;
    padding-left: var(--spacing-xl);
}

.timeline-item:nth-child(even) {
    padding-right: var(--spacing-xl);
    text-align: right;
}

.timeline-item::before {
    content: '';
    position: absolute;
    top: var(--spacing-md);
    width: 20px;
    height: 20px;
    background: var(--color-primary);
    border: 4px solid var(--color-accent);
    border-radius: 50%;
}

.timeline-item:nth-child(odd)::before {
    left: -10px;
}

.timeline-item:nth-child(even)::before {
    right: -10px;
}

.timeline-content {
    background: var(--color-white);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.timeline-date {
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--color-accent);
    margin-bottom: var(--spacing-xs);
}

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

.hidden {
    display: none !important;
}

.flex {
    display: flex;
}

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

.gap-sm {
    gap: var(--spacing-sm);
}

.gap-md {
    gap: var(--spacing-md);
}

.gap-lg {
    gap: var(--spacing-lg);
}

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }