/* ========================================
   FurKids Sanctuary - Design System
   Professional Dark/Light Theme
   ======================================== */

/* ========================================
   CSS CUSTOM PROPERTIES (Design Tokens)
   ======================================== */

:root {
    /* Light Theme Colors */
    --color-primary: #FF914D;
    --color-primary-hover: #e67d3a;
    --color-primary-light: rgba(255, 145, 77, 0.1);
    --color-secondary: #4F8A8B;
    --color-secondary-hover: #3a6b6c;
    --color-secondary-light: rgba(79, 138, 139, 0.1);

    /* Accent Colors */
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    --color-info: #3b82f6;

    /* Background Colors - Light Theme */
    --bg-primary: #FFF8F0;
    --bg-secondary: #FFFFFF;
    --bg-tertiary: #f5f0eb;
    --bg-card: #FFFFFF;
    --bg-overlay: rgba(0, 0, 0, 0.5);

    /* Text Colors - Light Theme */
    --text-primary: #1a1a2e;
    --text-secondary: #4a4a5a;
    --text-muted: #6b7280;
    --text-inverse: #FFFFFF;

    /* Border Colors */
    --border-color: #e5e5e5;
    --border-color-light: #f0f0f0;

    /* Shadow */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.15);

    /* Spacing Scale */
    --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: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-2xl: 2rem;
    --radius-full: 9999px;

    /* Typography */
    --font-family: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.5rem;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;

    /* Container */
    --container-max: 1400px;
    --container-padding: 1.5rem;
}

/* ========================================
   DARK THEME
   ======================================== */

[data-theme="dark"] {
    --bg-primary: #0f0f1a;
    --bg-secondary: #1a1a2e;
    --bg-tertiary: #16213e;
    --bg-card: #1a1a2e;
    --bg-overlay: rgba(0, 0, 0, 0.7);

    --text-primary: #f8f9fa;
    --text-secondary: #c4c4cc;
    --text-muted: #8b8b9a;
    --text-inverse: #1a1a2e;

    --border-color: #2a2a3e;
    --border-color-light: #252538;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.6);

    --color-primary-light: rgba(255, 145, 77, 0.15);
    --color-secondary-light: rgba(79, 138, 139, 0.15);
}

/* ========================================
   RESET & BASE STYLES
   ======================================== */

*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    transition: background-color var(--transition-base), color var(--transition-base);
    overflow-x: hidden;
    min-height: 100vh;
    margin: 0;
    padding: 0;
}

main {
    min-height: calc(100vh - 200px);
    width: 100%;
    max-width: 100%;
    margin: 0;
    padding: 0;
}

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

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

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

ul,
ol {
    list-style: none;
}

/* ========================================
   UTILITY CLASSES
   ======================================== */

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

.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(--text-muted);
}

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

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

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

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

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

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

.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;
}

/* ========================================
   HEADER
   ======================================== */

.header {
    background-color: var(--bg-secondary);
    padding: var(--space-md) var(--space-xl);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: background-color var(--transition-base);
}

.header__container {
    max-width: var(--container-max);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-lg);
}

.header__logo {
    cursor: pointer;
}

.header__logo-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-secondary);
    transition: color var(--transition-fast);
}

.header__logo-tagline {
    font-size: var(--font-size-xs);
    color: var(--color-primary);
    font-style: italic;
}

.header__nav {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.header__nav-list {
    display: flex;
    gap: var(--space-lg);
}

.header__nav-link {
    font-weight: 500;
    color: var(--text-secondary);
    padding: var(--space-sm) 0;
    position: relative;
}

.header__nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width var(--transition-fast);
}

.header__nav-link:hover {
    color: var(--color-primary);
}

.header__nav-link:hover::after {
    width: 100%;
}

.header__nav-link--highlight {
    color: var(--color-secondary);
    font-weight: 600;
}

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

/* Theme Toggle */
.theme-toggle {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    background-color: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    transition: all var(--transition-fast);
    border: 2px solid var(--border-color);
}

.theme-toggle:hover {
    background-color: var(--color-primary-light);
    border-color: var(--color-primary);
    transform: rotate(15deg);
}

.theme-toggle__icon--light {
    display: block;
}

.theme-toggle__icon--dark {
    display: none;
}

[data-theme="dark"] .theme-toggle__icon--light {
    display: none;
}

[data-theme="dark"] .theme-toggle__icon--dark {
    display: block;
}

/* Mobile Menu Toggle */
.header__menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
}

.header__menu-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    transition: all var(--transition-fast);
}

/* ========================================
   BUTTONS
   ======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 0.75rem 1.75rem;
    font-size: var(--font-size-base);
    font-weight: 600;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn--primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
    color: var(--text-inverse);
    box-shadow: 0 4px 15px rgba(255, 145, 77, 0.3);
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 145, 77, 0.4);
}

.btn--secondary {
    background-color: transparent;
    color: var(--color-secondary);
    border: 2px solid var(--color-secondary);
}

.btn--secondary:hover {
    background-color: var(--color-secondary);
    color: var(--text-inverse);
}

.btn--white {
    background-color: var(--bg-secondary);
    color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.btn--white:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn--white-outline {
    background-color: transparent;
    color: var(--bg-secondary);
    border: 2px solid var(--bg-secondary);
}

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

.btn--sm {
    padding: 0.5rem 1.25rem;
    font-size: var(--font-size-sm);
}

.btn--lg {
    padding: 1rem 2.5rem;
    font-size: var(--font-size-lg);
}

/* ========================================
   HERO SECTION
   ======================================== */

.hero {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--space-3xl) var(--container-padding);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
    min-height: 80vh;
}

.hero__content h1 {
    font-size: var(--font-size-5xl);
    font-weight: 700;
    color: var(--color-secondary);
    line-height: 1.1;
    margin-bottom: var(--space-lg);
}

.hero__content p {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
    line-height: 1.8;
}

.hero__buttons {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.hero__image {
    position: relative;
}

.hero__image-placeholder {
    width: 100%;
    aspect-ratio: 1;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    border-radius: var(--radius-2xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    box-shadow: var(--shadow-xl);
    position: relative;
    overflow: hidden;
}

.hero__image-placeholder::before {
    content: '';
    position: absolute;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 60%);
    animation: heroGlow 4s ease-in-out infinite;
}

@keyframes heroGlow {

    0%,
    100% {
        transform: translate(-30%, -30%);
    }

    50% {
        transform: translate(-70%, -70%);
    }
}

/* ========================================
   SECTION STYLES
   ======================================== */

.section {
    padding: var(--space-3xl) var(--container-padding);
    max-width: var(--container-max);
    margin: 0 auto;
}

.section__header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.section__title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-secondary);
    margin-bottom: var(--space-sm);
}

.section__subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-muted);
}

/* ========================================
   CARD STYLES
   ======================================== */

.card {
    background-color: var(--bg-card);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: all var(--transition-base);
}

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

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

.card__body {
    padding: var(--space-lg);
}

.card__title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-secondary);
    margin-bottom: var(--space-sm);
}

.card__text {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ========================================
   STORYBOOK SECTION
   ======================================== */

.storybook {
    padding: var(--space-3xl) var(--container-padding);
    max-width: var(--container-max);
    margin: 0 auto;
}

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

.filter-btn {
    padding: 0.625rem 1.5rem;
    background-color: var(--bg-card);
    color: var(--text-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-full);
    font-weight: 500;
    transition: all var(--transition-fast);
}

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

.filter-btn.active {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
    color: white;
    border-color: transparent;
}

.book-container {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    perspective: 2000px;
}

.book {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    background-color: var(--bg-card);
    padding: var(--space-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    min-height: 600px;
    position: relative;
}

.book::before {
    content: '';
    position: absolute;
    left: 50%;
    top: var(--space-lg);
    bottom: var(--space-lg);
    width: 2px;
    background: linear-gradient(to bottom, transparent, var(--border-color), transparent);
    transform: translateX(-50%);
}

.book-page {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.book.flipping {
    animation: flipPage 0.5s ease-in-out;
}

@keyframes flipPage {
    0% {
        transform: rotateY(0);
        opacity: 1;
    }

    50% {
        transform: rotateY(-10deg);
        opacity: 0.7;
    }

    100% {
        transform: rotateY(0);
        opacity: 1;
    }
}

/* Animal Card */
.animal-card {
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    display: flex;
    gap: var(--space-lg);
    transition: all var(--transition-base);
    border: 2px solid transparent;
}

.animal-card:hover {
    transform: translateY(-3px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.animal-image {
    width: 120px;
    height: 120px;
    border-radius: var(--radius-md);
    object-fit: cover;
    flex-shrink: 0;
}

.animal-info h3 {
    color: var(--color-secondary);
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-sm);
}

.animal-meta {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
    margin-bottom: var(--space-sm);
}

.meta-tag {
    padding: 0.25rem 0.75rem;
    background-color: var(--bg-card);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.animal-description {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-md);
    line-height: 1.5;
}

/* Navigation Arrows */
.nav-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
    color: white;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-fast);
    z-index: 10;
}

.nav-arrow:hover:not(:disabled) {
    transform: translateY(-50%) scale(1.1);
    box-shadow: var(--shadow-lg);
}

.nav-arrow:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    background: var(--text-muted);
}

.nav-arrow.prev {
    left: -25px;
}

.nav-arrow.next {
    right: -25px;
}

.page-counter {
    text-align: center;
    margin-top: var(--space-xl);
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

/* ========================================
   FEATURES SECTION
   ======================================== */

.features {
    padding: var(--space-3xl) var(--container-padding);
    max-width: var(--container-max);
    margin: 0 auto;
    background-color: var(--bg-card);
    border-radius: var(--radius-2xl);
}

.features__title {
    text-align: center;
    font-size: var(--font-size-3xl);
    color: var(--color-secondary);
    margin-bottom: var(--space-2xl);
}

.features__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

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

.feature-card__icon {
    width: 80px;
    height: 80px;
    background: var(--color-primary-light);
    border: 3px solid var(--color-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    margin: 0 auto var(--space-lg);
}

.feature-card__title {
    font-size: var(--font-size-xl);
    color: var(--color-secondary);
    margin-bottom: var(--space-sm);
}

.feature-card__text {
    color: var(--text-muted);
    line-height: 1.7;
}

/* ========================================
   FOOTER
   ======================================== */

.footer {
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-primary) 100%);
    color: white;
    padding: var(--space-3xl) var(--container-padding);
    text-align: center;
}

.footer__title {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--space-md);
}

.footer__text {
    font-size: var(--font-size-lg);
    opacity: 0.9;
    margin-bottom: var(--space-xl);
}

.footer__contact {
    margin-top: var(--space-xl);
    font-size: var(--font-size-sm);
    opacity: 0.8;
}

.footer__copyright {
    margin-top: var(--space-md);
    font-size: var(--font-size-xs);
    opacity: 0.7;
}

/* ========================================
   PAGE HERO SECTIONS
   ======================================== */

.page-hero {
    position: relative;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(135deg, rgba(79, 138, 139, 0.95) 0%, rgba(255, 145, 77, 0.95) 100%);
    color: white;
    overflow: hidden;
}

.page-hero::before {
    content: '🐾';
    position: absolute;
    font-size: 15rem;
    opacity: 0.08;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {

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

    50% {
        transform: translateY(-20px) rotate(10deg);
    }
}

.page-hero__title {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--space-md);
    animation: fadeInUp 0.8s ease-out;
}

.page-hero__subtitle {
    font-size: var(--font-size-xl);
    opacity: 0.9;
    font-style: italic;
    animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

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

/* ========================================
   FORMS
   ======================================== */

.form-group {
    margin-bottom: var(--space-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--space-sm);
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    font-size: var(--font-size-base);
    font-family: inherit;
    background-color: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

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

.form-submit-btn {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
    color: white;
    font-size: var(--font-size-base);
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.form-submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(255, 145, 77, 0.4);
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

/* Tablet */
@media (max-width: 1024px) {
    :root {
        --font-size-5xl: 2.5rem;
        --font-size-4xl: 2rem;
        --font-size-3xl: 1.75rem;
    }

    .hero {
        grid-template-columns: 1fr;
        text-align: center;
        min-height: auto;
        padding: var(--space-2xl) var(--container-padding);
    }

    .hero__buttons {
        justify-content: center;
    }

    .hero__image {
        max-width: 500px;
        margin: 0 auto;
    }

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

    .book {
        grid-template-columns: 1fr;
        min-height: auto;
    }

    .book::before {
        display: none;
    }
}

/* Mobile */
@media (max-width: 768px) {
    :root {
        --container-padding: 1rem;
        --space-3xl: 2.5rem;
        --font-size-5xl: 2rem;
        --font-size-4xl: 1.75rem;
    }

    .header {
        padding: var(--space-md);
        position: relative;
        z-index: 1001;
    }

    .header__container {
        flex-wrap: wrap;
        justify-content: space-between;
        gap: var(--space-sm);
    }

    .header__nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--bg-secondary);
        padding: var(--space-lg);
        box-shadow: var(--shadow-lg);
        flex-direction: column;
        gap: var(--space-md);
        z-index: 1000;
    }

    .header__nav.active {
        display: flex;
    }

    .header__nav-list {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }

    .header__menu-toggle {
        display: flex;
    }

    .animal-card {
        flex-direction: column;
        text-align: center;
    }

    .animal-image {
        width: 100%;
        height: 180px;
    }

    .nav-arrow {
        width: 40px;
        height: 40px;
    }

    .nav-arrow.prev {
        left: var(--space-sm);
    }

    .nav-arrow.next {
        right: var(--space-sm);
    }

    .page-hero {
        min-height: 300px;
    }

    .page-hero__title {
        font-size: var(--font-size-2xl);
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    :root {
        --font-size-5xl: 1.75rem;
        --font-size-4xl: 1.5rem;
        --font-size-3xl: 1.25rem;
    }

    .btn {
        padding: 0.625rem 1.25rem;
        font-size: var(--font-size-sm);
    }

    .hero__buttons {
        flex-direction: column;
    }

    .hero__buttons .btn {
        width: 100%;
    }
}

/* ========================================
   ACCESSIBILITY
   ======================================== */

@media (prefers-reduced-motion: reduce) {

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

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
}

/* ========================================
   LOADING STATE
   ======================================== */

.loading-state {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 300px;
    color: var(--text-muted);
}

.loading-state::before {
    content: '';
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-right: var(--space-md);
}

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

/* ========================================
   PREMIUM ANIMATIONS
   ======================================== */

/* Fade In Animation */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }

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

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }

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

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }

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

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }

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

/* Scale Animations */
@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }

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

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }

    50% {
        transform: scale(1.05);
    }

    70% {
        transform: scale(0.9);
    }

    100% {
        opacity: 1;
        transform: scale(1);
    }
}

/* Floating Animation */
@keyframes float {

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

    25% {
        transform: translateY(-10px) rotate(1deg);
    }

    75% {
        transform: translateY(10px) rotate(-1deg);
    }
}

@keyframes floatSlow {

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

    50% {
        transform: translateY(-20px);
    }
}

/* Pulse Animations */
@keyframes pulse {

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

    50% {
        transform: scale(1.05);
        opacity: 0.9;
    }
}

@keyframes pulseGlow {

    0%,
    100% {
        box-shadow: 0 0 0 0 rgba(255, 145, 77, 0.4);
    }

    50% {
        box-shadow: 0 0 0 20px rgba(255, 145, 77, 0);
    }
}

/* Shimmer Effect */
@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }

    100% {
        background-position: 200% 0;
    }
}

/* Rotate */
@keyframes rotate {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

/* Slide Animations */
@keyframes slideInFromBottom {
    from {
        opacity: 0;
        transform: translateY(100px);
    }

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

@keyframes slideInFromLeft {
    from {
        opacity: 0;
        transform: translateX(-100px);
    }

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

@keyframes slideInFromRight {
    from {
        opacity: 0;
        transform: translateX(100px);
    }

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

/* Gradient Animation */
@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

/* ========================================
   ANIMATION UTILITY CLASSES
   ======================================== */

.animate-fadeIn {
    animation: fadeIn 0.8s ease-out forwards;
}

.animate-fadeInUp {
    animation: fadeInUp 0.8s ease-out forwards;
}

.animate-fadeInDown {
    animation: fadeInDown 0.8s ease-out forwards;
}

.animate-fadeInLeft {
    animation: fadeInLeft 0.8s ease-out forwards;
}

.animate-fadeInRight {
    animation: fadeInRight 0.8s ease-out forwards;
}

.animate-scaleIn {
    animation: scaleIn 0.6s ease-out forwards;
}

.animate-bounceIn {
    animation: bounceIn 0.8s ease-out forwards;
}

.animate-float {
    animation: float 6s ease-in-out infinite;
}

.animate-floatSlow {
    animation: floatSlow 8s ease-in-out infinite;
}

.animate-pulse {
    animation: pulse 2s ease-in-out infinite;
}

.animate-pulseGlow {
    animation: pulseGlow 2s ease-in-out infinite;
}

.animate-shimmer {
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    background-size: 200% 100%;
    animation: shimmer 2s infinite;
}

/* Animation Delays */
.delay-100 {
    animation-delay: 0.1s;
}

.delay-200 {
    animation-delay: 0.2s;
}

.delay-300 {
    animation-delay: 0.3s;
}

.delay-400 {
    animation-delay: 0.4s;
}

.delay-500 {
    animation-delay: 0.5s;
}

.delay-600 {
    animation-delay: 0.6s;
}

.delay-700 {
    animation-delay: 0.7s;
}

.delay-800 {
    animation-delay: 0.8s;
}

/* ========================================
   SCROLL REVEAL (JavaScript-triggered)
   ======================================== */

.reveal {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s cubic-bezier(0.5, 0, 0, 1);
}

.reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

.reveal-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: all 0.8s cubic-bezier(0.5, 0, 0, 1);
}

.reveal-left.revealed {
    opacity: 1;
    transform: translateX(0);
}

.reveal-right {
    opacity: 0;
    transform: translateX(50px);
    transition: all 0.8s cubic-bezier(0.5, 0, 0, 1);
}

.reveal-right.revealed {
    opacity: 1;
    transform: translateX(0);
}

.reveal-scale {
    opacity: 0;
    transform: scale(0.8);
    transition: all 0.8s cubic-bezier(0.5, 0, 0, 1);
}

.reveal-scale.revealed {
    opacity: 1;
    transform: scale(1);
}

/* ========================================
   ENHANCED HOVER EFFECTS
   ======================================== */

/* Card Hover Effects */
.card {
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow:
        0 20px 40px rgba(0, 0, 0, 0.15),
        0 0 0 1px rgba(255, 145, 77, 0.1);
}

/* Button Hover Enhancement */
.btn {
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn--primary:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow:
        0 10px 30px rgba(255, 145, 77, 0.4),
        0 0 60px rgba(255, 145, 77, 0.2);
}

.btn--secondary:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(79, 138, 139, 0.3);
}

/* Link Hover Effect */
.header__nav-link {
    position: relative;
    transition: all 0.3s ease;
}

.header__nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    border-radius: 3px;
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.header__nav-link:hover::after {
    width: 100%;
}

/* Image Hover Effects */
.animal-card:hover .animal-image,
.gallery-thumb:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.animal-image {
    transition: all 0.4s ease;
}

/* ========================================
   GLASSMORPHISM EFFECTS
   ======================================== */

.glass {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

[data-theme="dark"] .glass {
    background: rgba(26, 26, 46, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* ========================================
   GRADIENT BACKGROUNDS
   ======================================== */

.gradient-animated {
    background: linear-gradient(-45deg,
            var(--color-primary),
            var(--color-secondary),
            #667eea,
            var(--color-primary));
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
}

.gradient-text {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ========================================
   ENHANCED HERO SECTION
   ======================================== */

.hero {
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(255, 145, 77, 0.1) 0%, transparent 70%);
    animation: floatSlow 20s ease-in-out infinite;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -50%;
    left: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(79, 138, 139, 0.1) 0%, transparent 70%);
    animation: floatSlow 25s ease-in-out infinite reverse;
}

.hero__content {
    position: relative;
    z-index: 1;
}

.hero__content h1 {
    animation: fadeInUp 1s ease-out;
}

.hero__content p {
    animation: fadeInUp 1s ease-out 0.2s both;
}

.hero__buttons {
    animation: fadeInUp 1s ease-out 0.4s both;
}

.hero__image-placeholder {
    animation: scaleIn 1s ease-out 0.3s both, float 6s ease-in-out 1s infinite;
}

/* ========================================
   ENHANCED PAGE HERO
   ======================================== */

.page-hero {
    position: relative;
    overflow: hidden;
}

.page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at top left, rgba(255, 145, 77, 0.2) 0%, transparent 50%),
        radial-gradient(ellipse at bottom right, rgba(79, 138, 139, 0.2) 0%, transparent 50%);
    animation: pulse 10s ease-in-out infinite;
}

.page-hero__content {
    position: relative;
    z-index: 1;
    animation: fadeIn 1s ease-out;
}

/* ========================================
   ENHANCED STORYBOOK
   ======================================== */

.book {
    position: relative;
}

.book::after {
    content: '';
    position: absolute;
    inset: -20px;
    background: linear-gradient(135deg,
            rgba(255, 145, 77, 0.05) 0%,
            transparent 50%,
            rgba(79, 138, 139, 0.05) 100%);
    border-radius: var(--radius-2xl);
    z-index: -1;
    animation: pulse 8s ease-in-out infinite;
}

.animal-card {
    position: relative;
    overflow: hidden;
}

.animal-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.animal-card:hover::before {
    left: 100%;
}

/* ========================================
   ENHANCED FEATURE CARDS
   ======================================== */

.feature-card {
    position: relative;
    transition: all 0.4s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
}

.feature-card__icon {
    transition: all 0.4s ease;
}

.feature-card:hover .feature-card__icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 10px 30px rgba(255, 145, 77, 0.3);
}

/* ========================================
   ENHANCED RESPONSIVE DESIGN
   ======================================== */

/* Large Desktop */
@media (min-width: 1400px) {
    :root {
        --font-size-5xl: 4rem;
        --container-max: 1600px;
    }
}

/* Desktop */
@media (max-width: 1200px) {
    .features__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Tablet Landscape */
@media (max-width: 1024px) {
    :root {
        --font-size-5xl: 2.5rem;
        --font-size-4xl: 2rem;
        --font-size-3xl: 1.75rem;
    }

    .hero {
        grid-template-columns: 1fr;
        text-align: center;
        min-height: auto;
        padding: var(--space-2xl) var(--container-padding);
    }

    .hero__buttons {
        justify-content: center;
    }

    .hero__image {
        max-width: 500px;
        margin: 0 auto;
    }

    .book {
        grid-template-columns: 1fr;
        min-height: auto;
        gap: var(--space-lg);
    }

    .book::before {
        display: none;
    }

    /* Two column grids become single */
    [style*="grid-template-columns: 1fr 1fr"],
    [style*="grid-template-columns: 1fr 1.5fr"] {
        display: block !important;
    }

    [style*="grid-template-columns: 1fr 1fr"]>*,
    [style*="grid-template-columns: 1fr 1.5fr"]>* {
        margin-bottom: var(--space-xl);
    }
}

/* Tablet Portrait */
@media (max-width: 768px) {
    :root {
        --container-padding: 1rem;
        --space-3xl: 2.5rem;
        --space-2xl: 2rem;
        --font-size-5xl: 2rem;
        --font-size-4xl: 1.75rem;
    }

    .header {
        padding: var(--space-md);
        position: relative;
        z-index: 1001;
    }

    .header__container {
        flex-wrap: wrap;
        justify-content: space-between;
        gap: var(--space-sm);
    }

    .header__nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--bg-secondary);
        padding: var(--space-lg);
        box-shadow: var(--shadow-lg);
        flex-direction: column;
        gap: var(--space-md);
        z-index: 1000;
    }

    .header__container {
        flex-wrap: wrap;
    }

    .header__nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--bg-secondary);
        padding: var(--space-lg);
        box-shadow: var(--shadow-lg);
        flex-direction: column;
        gap: var(--space-md);
        z-index: 1000;
        animation: slideInFromTop 0.3s ease-out;
    }

    @keyframes slideInFromTop {
        from {
            opacity: 0;
            transform: translateY(-20px);
        }

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

    .header__nav.active {
        display: flex;
    }

    .header__nav-list {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
        width: 100%;
    }

    .header__nav-link {
        display: block;
        padding: var(--space-md);
        background: var(--bg-tertiary);
        border-radius: var(--radius-md);
    }

    .header__menu-toggle {
        display: flex;
    }

    .header__actions {
        flex-wrap: wrap;
        gap: var(--space-sm);
        justify-content: flex-end;
        max-width: 50%;
    }

    .header__actions .btn,
    .header__actions .donate-btn {
        display: none;
    }

    .header__logo {
        flex: 1;
        min-width: 0;
    }

    .header__logo-title {
        font-size: 1.25rem;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .header__logo-tagline {
        font-size: 0.7rem;
    }

    .header__actions .language-switcher,
    .header__actions .theme-toggle {
        display: flex !important;
    }

    .features__grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }

    .animal-card {
        flex-direction: column;
        text-align: center;
    }

    .animal-image {
        width: 100%;
        height: 200px;
        margin-bottom: var(--space-md);
    }

    .nav-arrow {
        width: 40px;
        height: 40px;
        font-size: var(--font-size-base);
    }

    .nav-arrow.prev {
        left: var(--space-sm);
    }

    .nav-arrow.next {
        right: var(--space-sm);
    }

    .page-hero {
        min-height: 300px;
        padding: var(--space-2xl) var(--container-padding);
    }

    .page-hero__title {
        font-size: var(--font-size-2xl);
    }

    /* Form adjustments */
    .form-group {
        margin-bottom: var(--space-md);
    }

    /* Footer */
    .footer {
        padding: var(--space-2xl) var(--container-padding);
    }

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

    /* Hide decorative elements on mobile */
    .hero::before,
    .hero::after {
        display: none;
    }
}

/* Mobile */
@media (max-width: 576px) {
    :root {
        --font-size-5xl: 1.75rem;
        --font-size-4xl: 1.5rem;
        --font-size-3xl: 1.25rem;
        --font-size-2xl: 1.125rem;
        --space-3xl: 2rem;
        --space-2xl: 1.5rem;
    }

    body {
        font-size: var(--font-size-sm);
    }

    /* Header mobile styles */
    .header {
        padding: var(--space-sm) var(--space-md);
    }

    .header__container {
        padding: 0;
    }

    .header__logo {
        flex: 1 1 auto;
    }

    .header__logo-title {
        font-size: 1rem;
    }

    .header__logo-tagline {
        display: none;
    }

    .header__actions {
        gap: var(--space-xs);
    }

    .header__menu-toggle {
        width: 36px;
        height: 36px;
    }

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

    .header__nav-list {
        gap: var(--space-sm);
    }

    .header__nav-link {
        padding: var(--space-sm) var(--space-md);
        font-size: var(--font-size-sm);
    }

    .btn {
        padding: 0.625rem 1.25rem;
        font-size: var(--font-size-sm);
        width: 100%;
    }

    .btn--lg {
        padding: 0.875rem 1.5rem;
    }

    .hero__buttons,
    [style*="display: flex"][style*="gap"] {
        flex-direction: column !important;
    }

    .hero__buttons .btn,
    .hero__buttons a {
        width: 100%;
        text-align: center;
    }

    .book {
        padding: var(--space-lg);
        border-radius: var(--radius-lg);
    }

    .section {
        padding: var(--space-2xl) var(--container-padding);
    }

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

    .card:hover {
        transform: none;
    }

    /* Disable hover effects on touch devices */
    @media (hover: none) {

        .card:hover,
        .btn:hover,
        .animal-card:hover {
            transform: none;
        }
    }

    /* Gallery adjustments */
    .gallery-thumbs {
        gap: var(--space-xs) !important;
    }

    .gallery-thumb {
        width: 60px !important;
        height: 60px !important;
    }

    /* Timeline mobile */
    .timeline>div {
        flex-direction: column !important;
        align-items: center !important;
    }

    .timeline>div>div:first-child {
        text-align: center !important;
        padding: var(--space-md) !important;
    }

    /* Schedule grid */
    [style*="grid-template-columns: repeat(auto-fit"] {
        display: grid !important;
        grid-template-columns: repeat(2, 1fr) !important;
    }

    /* Quick stats */
    [style*="grid-template-columns: repeat(auto-fit, minmax(120px"] {
        grid-template-columns: repeat(3, 1fr) !important;
        gap: var(--space-sm) !important;
    }
}

/* Extra Small Mobile */
@media (max-width: 380px) {
    :root {
        --container-padding: 0.75rem;
    }

    .header__logo-title {
        font-size: var(--font-size-base);
    }

    .header__logo-tagline {
        display: none;
    }

    [style*="grid-template-columns: repeat(3, 1fr)"] {
        grid-template-columns: repeat(2, 1fr) !important;
    }
}

/* ========================================
   PRINT STYLES
   ======================================== */

@media print {

    .header,
    .footer,
    .nav-arrow,
    .btn,
    .theme-toggle {
        display: none !important;
    }

    body {
        background: white;
        color: black;
    }

    .card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}