/**
 * Shine-Life-Center - Hauptstylesheet
 *
 * Elegantes, modernes Design mit K-Beauty Ästhetik
 */

/* ===== CSS Variables ===== */
:root {
    /* Primärfarben - Elegantes Gold & Rosé */
    --color-primary: #c9a86c;
    --color-primary-dark: #a88b4a;
    --color-primary-light: #e8d5b5;

    /* Sekundärfarben - Sanftes Rosé */
    --color-secondary: #e8b4b8;
    --color-secondary-dark: #d4969b;
    --color-secondary-light: #f5d5d8;

    /* Akzentfarben */
    --color-accent: #7eb8b3;
    --color-accent-dark: #5a9590;

    /* Neutrale Farben */
    --color-dark: #2d2d2d;
    --color-gray-dark: #555555;
    --color-gray: #888888;
    --color-gray-light: #cccccc;
    --color-light: #f8f6f3;
    --color-white: #ffffff;

    /* Status-Farben */
    --color-success: #6bb38a;
    --color-warning: #e8c87e;
    --color-error: #d4696e;
    --color-info: #7eb8b3;

    /* Typografie */
    --font-primary: 'Cormorant Garamond', 'Georgia', serif;
    --font-secondary: 'Montserrat', 'Helvetica Neue', sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.7;

    /* Abstände */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 5rem;

    /* Schatten */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);

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

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-full: 50%;

    /* Container */
    --container-max-width: 1200px;
    --container-padding: 20px;
}

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

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-secondary);
    font-size: 1rem;
    line-height: var(--line-height-base);
    color: var(--color-dark);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    font-weight: 500;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
    color: var(--color-dark);
}

h1 { font-size: 3rem; letter-spacing: 0.02em; }
h2 { font-size: 2.25rem; letter-spacing: 0.01em; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.375rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

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

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

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

/* ===== Container ===== */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.container-fluid {
    width: 100%;
    padding: 0 var(--container-padding);
}

/* ===== Header ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--color-white);
    transition: all var(--transition-normal);
}

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

.header-top {
    background: var(--color-dark);
    color: var(--color-white);
    padding: var(--spacing-sm) 0;
    font-size: 0.875rem;
}

.header-top a {
    color: var(--color-white);
}

.header-top a:hover {
    color: var(--color-primary-light);
}

.header-main {
    padding: var(--spacing-md) 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.logo img {
    height: 60px;
    width: auto;
    transition: transform var(--transition-normal);
}

.logo:hover img {
    transform: scale(1.05);
}

.logo-text {
    font-family: var(--font-primary);
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--color-dark);
    letter-spacing: 0.05em;
}

.logo-tagline {
    font-size: 0.75rem;
    color: var(--color-gray);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

/* ===== Navigation ===== */
.nav-main {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-menu a {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-dark);
    padding: var(--spacing-sm) 0;
    position: relative;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width var(--transition-normal);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 100%;
}

.nav-menu a.nav-login {
    background: var(--color-primary);
    color: white !important;
    padding: 8px 16px;
    border-radius: var(--radius-md);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.nav-menu a.nav-login::after {
    display: none;
}

.nav-menu a.nav-login:hover {
    background: var(--color-primary-dark);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--color-dark);
    transition: all var(--transition-fast);
}

/* ===== Hero Section ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: linear-gradient(135deg, var(--color-light) 0%, var(--color-white) 100%);
    margin-top: 100px;
}

.hero-slider {
    position: absolute;
    inset: 0;
}

.hero-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity var(--transition-slow);
}

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

.hero-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to right, rgba(255,255,255,0.95) 0%, rgba(255,255,255,0.7) 50%, rgba(255,255,255,0.3) 100%);
}

.hero-content {
    position: relative;
    z-index: 10;
    width: 100%;
    max-width: 600px;
    padding: var(--spacing-xxl);
    text-align: center;
}

.hero-subtitle {
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-primary-dark);
    margin-bottom: var(--spacing-md);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 400;
    margin-bottom: var(--spacing-lg);
    line-height: 1.2;
}

.hero-text {
    font-size: 1.125rem;
    color: var(--color-gray-dark);
    margin-bottom: var(--spacing-xl);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-family: var(--font-secondary);
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    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-dark);
    border-color: var(--color-dark);
}

.btn-secondary:hover {
    background: var(--color-dark);
    color: var(--color-white);
}

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

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

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

.btn-sm {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.75rem;
}

/* ===== Sections ===== */
.section {
    padding: var(--spacing-xxl) 0;
}

.section-light {
    background: var(--color-light);
}

.section-dark {
    background: var(--color-dark);
    color: var(--color-white);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-xxl);
}

.section-subtitle {
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-primary-dark);
    margin-bottom: var(--spacing-sm);
}

.section-title {
    margin-bottom: var(--spacing-md);
}

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

.section-divider {
    width: 60px;
    height: 2px;
    background: var(--color-primary);
    margin: var(--spacing-lg) auto 0;
}

/* ===== Product Cards ===== */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

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

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

.product-image {
    position: relative;
    aspect-ratio: 1;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.product-card:hover .product-image img {
    transform: scale(1.05);
}

.product-badge {
    position: absolute;
    top: var(--spacing-md);
    left: var(--spacing-md);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-primary);
    color: var(--color-white);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    border-radius: var(--radius-sm);
}

.product-badge.sale {
    background: var(--color-error);
}

.product-actions {
    position: absolute;
    bottom: var(--spacing-md);
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    display: flex;
    gap: var(--spacing-sm);
    opacity: 0;
    transition: all var(--transition-normal);
}

.product-card:hover .product-actions {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.product-action-btn {
    width: 40px;
    height: 40px;
    background: var(--color-white);
    border: none;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-md);
}

.product-action-btn:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

.product-content {
    padding: var(--spacing-lg);
    text-align: center;
}

.product-category {
    font-size: 0.75rem;
    color: var(--color-gray);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-sm);
}

.product-title {
    font-family: var(--font-primary);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.product-title a {
    color: var(--color-dark);
}

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

.product-price {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-primary-dark);
}

.product-price .old-price {
    font-size: 0.875rem;
    color: var(--color-gray);
    text-decoration: line-through;
    margin-right: var(--spacing-sm);
}

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

.feature-card {
    text-align: center;
    padding: var(--spacing-xl);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    background: var(--color-primary-light);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--color-primary-dark);
    transition: all var(--transition-normal);
}

.feature-card:hover .feature-icon {
    background: var(--color-primary);
    color: var(--color-white);
    transform: scale(1.1);
}

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

.feature-text {
    color: var(--color-gray-dark);
    font-size: 0.9375rem;
}

/* ===== About Section ===== */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    align-items: center;
}

.about-image {
    position: relative;
}

.about-image img {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.about-image::before {
    content: '';
    position: absolute;
    top: -20px;
    left: -20px;
    width: 100%;
    height: 100%;
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-lg);
    z-index: -1;
}

/* ===== Testimonials ===== */
.testimonials-slider {
    max-width: 800px;
    margin: 0 auto;
}

.testimonial-card {
    text-align: center;
    padding: var(--spacing-xl);
}

.testimonial-quote {
    font-family: var(--font-primary);
    font-size: 1.5rem;
    font-style: italic;
    color: var(--color-dark);
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.testimonial-quote::before {
    content: '"';
    font-size: 4rem;
    color: var(--color-primary-light);
    position: absolute;
    top: -30px;
    left: -20px;
    font-family: Georgia, serif;
}

.testimonial-author {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
}

.testimonial-avatar {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-full);
    object-fit: cover;
}

.testimonial-name {
    font-weight: 600;
    color: var(--color-dark);
}

.testimonial-title {
    font-size: 0.875rem;
    color: var(--color-gray);
}

.testimonial-rating {
    color: var(--color-warning);
    margin-top: var(--spacing-sm);
}

/* ===== Contact Section ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
}

.contact-info {
    padding: var(--spacing-xl);
}

.contact-item {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--color-primary-light);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary-dark);
    font-size: 1.25rem;
    flex-shrink: 0;
}

.contact-label {
    font-size: 0.75rem;
    color: var(--color-gray);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-xs);
}

.contact-value {
    font-weight: 500;
    color: var(--color-dark);
}

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

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    color: var(--color-dark);
}

.form-control {
    width: 100%;
    padding: var(--spacing-md);
    font-family: var(--font-secondary);
    font-size: 1rem;
    border: 1px solid var(--color-gray-light);
    border-radius: var(--radius-sm);
    background: var(--color-white);
    transition: all var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(201, 168, 108, 0.1);
}

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

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

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

.form-check input {
    margin-top: 4px;
}

/* ===== Footer ===== */
.footer {
    background: var(--color-dark);
    color: var(--color-white);
    padding-top: var(--spacing-xxl);
}

.footer-main {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-xxl);
    padding-bottom: var(--spacing-xxl);
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    height: 50px;
    margin-bottom: var(--spacing-lg);
}

.footer-text {
    color: var(--color-gray);
    font-size: 0.9375rem;
    margin-bottom: var(--spacing-lg);
}

.footer-social {
    display: flex;
    gap: var(--spacing-md);
}

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

.footer-social a:hover {
    background: var(--color-primary);
    transform: translateY(-3px);
}

.footer-title {
    font-family: var(--font-primary);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    color: var(--color-white);
}

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

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

.footer-links a {
    color: var(--color-gray);
    font-size: 0.9375rem;
    transition: all var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-primary-light);
    padding-left: 5px;
}

.footer-bottom {
    padding: var(--spacing-lg) 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
    color: var(--color-gray);
}

.footer-atomy {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.footer-atomy img {
    height: 24px;
}

/* ===== Utilities ===== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

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

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }
.mt-5 { margin-top: var(--spacing-xxl); }

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

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

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

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

.gap-1 { gap: var(--spacing-sm); }
.gap-2 { gap: var(--spacing-md); }
.gap-3 { gap: var(--spacing-lg); }

/* ===== Alerts ===== */
.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.alert-success {
    background: rgba(107, 179, 138, 0.1);
    border: 1px solid var(--color-success);
    color: var(--color-success);
}

.alert-danger {
    background: rgba(212, 105, 110, 0.1);
    border: 1px solid var(--color-error);
    color: var(--color-error);
}

.alert-warning {
    background: rgba(232, 200, 126, 0.1);
    border: 1px solid var(--color-warning);
    color: #8b7731;
}

.alert-info {
    background: rgba(126, 184, 179, 0.1);
    border: 1px solid var(--color-info);
    color: var(--color-accent-dark);
}

.alert-dismissible {
    position: relative;
    padding-right: var(--spacing-xxl);
}

.alert .btn-close {
    position: absolute;
    right: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0.5;
    transition: opacity var(--transition-fast);
}

.alert .btn-close:hover {
    opacity: 1;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .footer-main {
        grid-template-columns: 1fr 1fr;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    h1 { font-size: 2.25rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.5rem; }

    .header-main {
        padding: var(--spacing-sm) 0;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-main {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--color-white);
        flex-direction: column;
        padding: var(--spacing-xxl) var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        transition: right var(--transition-normal);
    }

    .nav-main.open {
        right: 0;
    }

    .nav-menu {
        flex-direction: column;
        width: 100%;
    }

    .nav-menu a {
        padding: var(--spacing-md) 0;
        border-bottom: 1px solid var(--color-light);
    }

    .hero {
        min-height: 80vh;
        margin-top: 70px;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-content {
        padding: var(--spacing-md);
        max-width: 100%;
    }

    .hero-text {
        font-size: 1rem;
        padding: 0 var(--spacing-sm);
    }

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

    .container {
        padding-left: var(--spacing-md);
        padding-right: var(--spacing-md);
    }

    .footer-main {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-brand {
        max-width: 100%;
    }

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

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero {
        margin-top: 60px;
        min-height: auto;
        padding: var(--spacing-xl) 0;
    }

    .hero-title {
        font-size: 1.75rem;
        word-wrap: break-word;
    }

    .hero-text {
        font-size: 0.9rem;
    }

    .hero-content {
        padding: var(--spacing-sm);
    }

    .btn {
        width: 100%;
        padding: 12px 16px;
        font-size: 0.9rem;
    }

    .d-flex.gap-2 {
        flex-direction: column;
        width: 100%;
    }

    .products-grid {
        grid-template-columns: 1fr;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }
}

/* ===== Animations ===== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

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

.animate-fade-in {
    animation: fadeIn 0.6s ease forwards;
}

.animate-slide-up {
    animation: slideUp 0.6s ease forwards;
}

/* ===== Loading Spinner ===== */
.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--color-light);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* ===== Scroll to Top ===== */
.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
    z-index: 999;
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    background: var(--color-primary-dark);
    transform: translateY(-5px);
}