/* ==========================================
   CSS Custom Properties (Design Tokens)
   ========================================== */
:root {
    /* Colors - Soft, calming palette */
    --color-bg: #faf8f5;
    --color-bg-secondary: #f0ede8;
    --color-text: #2d3436;
    --color-text-muted: #636e72;
    --color-text-light: #95a0a3;

    --color-primary: #9b7bb8;
    --color-primary-light: #c9b4db;
    --color-primary-dark: #7c5fa0;

    --color-accent: #f8b4b4;
    --color-accent-light: #fcd5d5;

    --color-card-bg: #ffffff;
    --color-card-border: rgba(155, 123, 184, 0.15);
    --color-card-shadow: rgba(155, 123, 184, 0.08);

    /* Location colors */
    --color-indoor: #81c3d7;
    --color-outdoor: #a8d5a2;
    --color-both: #f0c38e;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-handwritten: 'Caveat', cursive;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;

    /* Border radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 50%;

    /* Shadows */
    --shadow-soft: 0 4px 20px rgba(155, 123, 184, 0.08);
    --shadow-medium: 0 8px 30px rgba(155, 123, 184, 0.12);
    --shadow-hover: 0 12px 40px rgba(155, 123, 184, 0.18);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.25s ease;
    --transition-slow: 0.4s ease;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    font-weight: 400;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* ==========================================
   Floating Particles Background
   ========================================== */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 200px;
    height: 200px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent-light));
    opacity: 0.15;
    animation: float 20s infinite ease-in-out;
}

.particle:nth-child(1) {
    top: 10%;
    left: 10%;
    animation-delay: 0s;
    animation-duration: 25s;
}

.particle:nth-child(2) {
    top: 50%;
    right: 10%;
    width: 150px;
    height: 150px;
    animation-delay: -5s;
    animation-duration: 22s;
}

.particle:nth-child(3) {
    bottom: 20%;
    left: 30%;
    width: 180px;
    height: 180px;
    animation-delay: -10s;
    animation-duration: 28s;
}

.particle:nth-child(4) {
    top: 30%;
    left: 60%;
    width: 120px;
    height: 120px;
    animation-delay: -15s;
    animation-duration: 20s;
}

.particle:nth-child(5) {
    bottom: 10%;
    right: 20%;
    width: 160px;
    height: 160px;
    animation-delay: -8s;
    animation-duration: 24s;
}

@keyframes float {

    0%,
    100% {
        transform: translate(0, 0) scale(1);
    }

    25% {
        transform: translate(30px, -30px) scale(1.05);
    }

    50% {
        transform: translate(-20px, 20px) scale(0.95);
    }

    75% {
        transform: translate(20px, 10px) scale(1.02);
    }
}

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

/* ==========================================
   Hero Section
   ========================================== */
.hero {
    padding: var(--space-2xl) 0;
    text-align: center;
    position: relative;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.logo-icon {
    font-size: 2.5rem;
    animation: gentle-bounce 3s infinite ease-in-out;
}

@keyframes gentle-bounce {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-5px);
    }
}

.logo-text {
    font-family: var(--font-handwritten);
    font-size: clamp(2rem, 6vw, 3rem);
    font-weight: 600;
    color: var(--color-primary-dark);
    letter-spacing: 0.02em;
}

.personal-message {
    max-width: 650px;
    margin: 0 auto;
    padding: var(--space-lg);
    background: var(--color-card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--color-card-border);
    position: relative;
    overflow: hidden;
}

.personal-message::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
}

.message-text {
    font-size: 1.1rem;
    color: var(--color-text);
    margin-bottom: var(--space-md);
    line-height: 1.7;
}

.message-note {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    padding: var(--space-md);
    background: var(--color-bg-secondary);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-md);
}

.message-closing {
    font-family: var(--font-handwritten);
    font-size: 1.4rem;
    color: var(--color-primary-dark);
}

.heart-emoji {
    display: inline-block;
    animation: pulse-heart 1.5s infinite ease-in-out;
}

@keyframes pulse-heart {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.15);
    }
}

/* ==========================================
   Filter Section
   ========================================== */
.main-content {
    padding: var(--space-lg) 0 var(--space-3xl);
}

.filter-section {
    background: var(--color-card-bg);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    margin-bottom: var(--space-xl);
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--color-card-border);
}

.search-wrapper {
    position: relative;
    margin-bottom: var(--space-lg);
}

.search-icon {
    position: absolute;
    left: var(--space-md);
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.1rem;
    pointer-events: none;
}

.search-input {
    width: 100%;
    padding: var(--space-md) var(--space-md) var(--space-md) calc(var(--space-md) * 3);
    font-size: 1rem;
    font-family: var(--font-primary);
    border: 2px solid var(--color-bg-secondary);
    border-radius: var(--radius-md);
    background: var(--color-bg);
    color: var(--color-text);
    transition: var(--transition-fast);
}

.search-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(155, 123, 184, 0.1);
}

.search-input::placeholder {
    color: var(--color-text-light);
}

.filter-group {
    margin-bottom: var(--space-md);
}

.filter-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-muted);
    margin-bottom: var(--space-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.filter-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.filter-btn {
    padding: var(--space-sm) var(--space-md);
    font-size: 0.9rem;
    font-family: var(--font-primary);
    font-weight: 500;
    color: var(--color-text-muted);
    background: var(--color-bg);
    border: 2px solid var(--color-bg-secondary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition-fast);
}

.filter-btn:hover {
    border-color: var(--color-primary-light);
    color: var(--color-primary);
}

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

.sort-group {
    margin-top: var(--space-md);
}

.sort-select {
    width: 100%;
    max-width: 200px;
    padding: var(--space-sm) var(--space-md);
    font-size: 0.9rem;
    font-family: var(--font-primary);
    border: 2px solid var(--color-bg-secondary);
    border-radius: var(--radius-sm);
    background: var(--color-bg);
    color: var(--color-text);
    cursor: pointer;
    transition: var(--transition-fast);
}

.sort-select:focus {
    outline: none;
    border-color: var(--color-primary);
}

.results-count {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-lg);
    padding-left: var(--space-xs);
}

/* ==========================================
   Cards Grid
   ========================================== */
.cards-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
}

@media (min-width: 540px) {
    .cards-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 900px) {
    .cards-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-lg);
    }
}

@media (min-width: 1100px) {
    .cards-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* ==========================================
   Method Card
   ========================================== */
.method-card {
    background: var(--color-card-bg);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--color-card-border);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
    cursor: default;
    animation: card-fade-in 0.4s ease forwards;
    opacity: 0;
    transform: translateY(20px);
}

.method-card.has-link {
    cursor: pointer;
}

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

@keyframes card-fade-in {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card-badge {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    padding: var(--space-xs) var(--space-sm);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius-sm);
    background: var(--color-both);
    color: #6b5b3c;
}

.card-badge.indoor {
    background: var(--color-indoor);
    color: #2d5a6b;
}

.card-badge.outdoor {
    background: var(--color-outdoor);
    color: #3d5a3a;
}

.card-header {
    margin-bottom: var(--space-md);
    padding-right: 60px;
}

.method-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text);
    line-height: 1.3;
    margin-bottom: var(--space-xs);
}

.age-range {
    font-size: 0.8rem;
    color: var(--color-text-light);
}

.card-description {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.55;
    margin-bottom: var(--space-md);
}

.card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.equipment-tag {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    font-size: 0.8rem;
    color: var(--color-primary-dark);
    background: var(--color-primary-light);
    background: rgba(155, 123, 184, 0.15);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition-fast);
    text-decoration: none;
}

.equipment-tag:hover {
    background: rgba(155, 123, 184, 0.25);
}

.equipment-tag.no-link {
    cursor: default;
}

.equipment-tag.no-link:hover {
    background: rgba(155, 123, 184, 0.15);
}

.no-equipment {
    font-size: 0.8rem;
    color: var(--color-text-light);
    font-style: italic;
}

.link-indicator {
    font-size: 0.9rem;
    color: var(--color-primary);
    opacity: 0;
    transform: translateX(-4px);
    transition: var(--transition-fast);
}

.method-card.has-link:hover .link-indicator {
    opacity: 1;
    transform: translateX(0);
}

/* ==========================================
   Empty State
   ========================================== */
.empty-state {
    text-align: center;
    padding: var(--space-3xl) var(--space-lg);
    color: var(--color-text-muted);
}

.empty-icon {
    font-size: 3rem;
    display: block;
    margin-bottom: var(--space-md);
}

/* ==========================================
   Footer
   ========================================== */
.footer {
    padding: var(--space-xl) 0;
    text-align: center;
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-card-border);
}

.footer-text {
    font-family: var(--font-handwritten);
    font-size: 1.3rem;
    color: var(--color-primary-dark);
    margin-bottom: var(--space-sm);
}

.footer-disclaimer {
    font-size: 0.8rem;
    color: var(--color-text-light);
}

/* ==========================================
   Mobile Optimizations
   ========================================== */
@media (max-width: 600px) {
    .hero {
        padding: var(--space-xl) 0 var(--space-lg);
    }

    .logo-text {
        font-size: 1.8rem;
    }

    .personal-message {
        padding: var(--space-md);
    }

    .message-text {
        font-size: 1rem;
    }

    .message-closing {
        font-size: 1.2rem;
    }

    .filter-section {
        padding: var(--space-md);
    }

    .filter-btn {
        padding: var(--space-sm) var(--space-sm);
        font-size: 0.8rem;
    }

    .method-card {
        padding: var(--space-md);
    }

    .method-name {
        font-size: 1rem;
    }

    .card-description {
        font-size: 0.85rem;
    }

    .particle {
        display: none;
    }
}

/* ==========================================
   Accessibility
   ========================================== */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles */
.filter-btn:focus-visible,
.sort-select:focus-visible,
.method-card:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
}

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

/* ==========================================
   SEO Intro (Hidden but accessible for screen readers)
   ========================================== */
.seo-intro {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ==========================================
   Section Titles
   ========================================== */
.section-title {
    font-family: var(--font-handwritten);
    font-size: clamp(1.5rem, 4vw, 2rem);
    font-weight: 600;
    color: var(--color-primary-dark);
    text-align: center;
    margin-bottom: var(--space-lg);
}

/* ==========================================
   FAQ Section
   ========================================== */
.faq-section {
    padding: var(--space-3xl) 0;
    background: var(--color-bg-secondary);
    position: relative;
}

.faq-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-card-border), transparent);
}

.faq-heading {
    font-family: var(--font-handwritten);
    font-size: clamp(1.8rem, 5vw, 2.5rem);
    font-weight: 600;
    color: var(--color-primary-dark);
    text-align: center;
    margin-bottom: var(--space-sm);
}

.faq-intro {
    text-align: center;
    color: var(--color-text-muted);
    font-size: 1rem;
    max-width: 600px;
    margin: 0 auto var(--space-xl);
    line-height: 1.6;
}

.faq-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
    max-width: 900px;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .faq-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-lg);
    }
}

.faq-item {
    background: var(--color-card-bg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--color-card-border);
    overflow: hidden;
    transition: var(--transition-base);
}

.faq-item:hover {
    box-shadow: var(--shadow-medium);
}

.faq-item[open] {
    box-shadow: var(--shadow-medium);
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    padding: var(--space-lg);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
    cursor: pointer;
    list-style: none;
    transition: var(--transition-fast);
}

.faq-question::-webkit-details-marker {
    display: none;
}

.faq-question::marker {
    display: none;
}

.faq-question:hover {
    color: var(--color-primary-dark);
}

.faq-question span:first-child {
    flex: 1;
    line-height: 1.4;
}

.faq-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    font-size: 1.2rem;
    font-weight: 300;
    color: var(--color-primary);
    background: rgba(155, 123, 184, 0.1);
    border-radius: var(--radius-full);
    flex-shrink: 0;
    transition: var(--transition-base);
}

.faq-item[open] .faq-icon {
    transform: rotate(45deg);
    background: var(--color-primary);
    color: white;
}

.faq-answer {
    padding: 0 var(--space-lg) var(--space-lg);
    color: var(--color-text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
    animation: faq-slide-down 0.3s ease;
}

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

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

.faq-answer p {
    margin-bottom: var(--space-md);
}

.faq-answer p:last-child {
    margin-bottom: 0;
}

.faq-answer ul,
.faq-answer ol {
    margin: var(--space-md) 0;
    padding-left: var(--space-lg);
}

.faq-answer li {
    margin-bottom: var(--space-sm);
}

.faq-answer strong {
    color: var(--color-text);
}

/* ==========================================
   SEO Content Section
   ========================================== */
.seo-content-section {
    padding: var(--space-3xl) 0;
    background: var(--color-bg);
}

.seo-content-heading {
    font-family: var(--font-handwritten);
    font-size: clamp(1.5rem, 4vw, 2rem);
    font-weight: 600;
    color: var(--color-primary-dark);
    text-align: center;
    margin-bottom: var(--space-xl);
}

.seo-content-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
    max-width: 1000px;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .seo-content-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.seo-content-block {
    background: var(--color-card-bg);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--color-card-border);
    text-align: center;
}

.seo-content-block h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-primary-dark);
    margin-bottom: var(--space-md);
}

.seo-content-block p {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    line-height: 1.7;
}

.seo-content-block strong {
    color: var(--color-text);
}

/* ==========================================
   Enhanced Footer
   ========================================== */
.footer-nav {
    display: flex;
    justify-content: center;
    gap: var(--space-lg);
    margin: var(--space-md) 0;
}

.footer-link {
    color: var(--color-primary-dark);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition-fast);
}

.footer-link:hover {
    color: var(--color-primary);
    text-decoration: underline;
}

.footer-copyright {
    font-size: 0.75rem;
    color: var(--color-text-light);
    margin-top: var(--space-md);
}

/* ==========================================
   Mobile FAQ Optimizations
   ========================================== */
@media (max-width: 600px) {
    .faq-section {
        padding: var(--space-xl) 0;
    }

    .faq-question {
        padding: var(--space-md);
        font-size: 0.95rem;
    }

    .faq-answer {
        padding: 0 var(--space-md) var(--space-md);
        font-size: 0.9rem;
    }

    .faq-icon {
        width: 24px;
        height: 24px;
        font-size: 1rem;
    }

    .seo-content-section {
        padding: var(--space-xl) 0;
    }

    .seo-content-block {
        padding: var(--space-md);
    }

    .seo-content-block h3 {
        font-size: 1rem;
    }

    .seo-content-block p {
        font-size: 0.9rem;
    }
}