/* CSS Custom Properties */
:root {
    --color-primary: #8B4513;
    --color-secondary: #D2691E;
    --color-accent: #FF8C00;
    --color-highlight: #FFA500;
    --color-light: #FFD700;
    --color-white: #FFFFFF;
    --color-gray-light: #F5F5F5;
    --color-gray-medium: #CCCCCC;
    --color-gray-dark: #666666;
    --color-black: #333333;
    --color-success: #28a745;
    --color-danger: #dc3545;
    --color-warning: #ffc107;
    
    --font-family-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-size-base: 16px;
    --font-size-small: 14px;
    --font-size-large: 18px;
    --font-size-xl: 24px;
    --font-size-xxl: 32px;
    
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;
    
    --border-radius: 8px;
    --border-radius-large: 12px;
    --box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --box-shadow-hover: 0 4px 16px rgba(0, 0, 0, 0.15);
    
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-family-primary);
    line-height: 1.6;
    color: var(--color-black);
    background-color: var(--color-gray-light);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

/* Header */
.header {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: var(--color-white);
    padding: var(--spacing-xl) 0;
    text-align: center;
    box-shadow: var(--box-shadow);
}

.header__title {
    font-size: var(--font-size-xxl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
}

.header__icon {
    font-size: 2.5rem;
    animation: bounce 2s infinite;
}

.header__icon img,
.header__logo {
    width: 56px;
    height: 56px;
    object-fit: contain;
    display: block;
}

.header__icon i {
    font-size: 2.2rem;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

.header__subtitle {
    font-size: var(--font-size-large);
    opacity: 0.9;
    font-weight: 300;
}

/* Main Content */
.main {
    flex: 1;
    padding: var(--spacing-xxl) 0;
}

/* Section Styles */
.section__title {
    font-size: var(--font-size-xl);
    color: var(--color-primary);
    margin-bottom: var(--spacing-xl);
    text-align: center;
    font-weight: 600;
}

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

/* Steps Indicator */
.steps-wrapper {
    background: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-large);
    box-shadow: var(--box-shadow);
    margin-bottom: var(--spacing-xxl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

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

.steps-progress__bar {
    flex: 1;
    height: 8px;
    background: var(--color-gray-light);
    border-radius: 999px;
    overflow: hidden;
}

.steps-progress__fill {
    height: 100%;
    width: 33%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    border-radius: 999px;
    transition: width var(--transition-slow);
}

.steps-progress__text {
    font-weight: 600;
    color: var(--color-primary);
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-md);
}

.steps__item {
    width: 100%;
    border: none;
    background: none;
    cursor: pointer;
    text-align: left;
    color: inherit;
}

.steps__item {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-gray-medium);
    background-color: var(--color-white);
    box-shadow: var(--box-shadow);
    transition: border-color var(--transition-fast), background-color var(--transition-fast), transform var(--transition-fast);
    min-height: 110px;
}

.steps__item.step--active {
    border-color: var(--color-primary);
    background-color: rgba(139, 69, 19, 0.08);
    transform: translateY(-2px);
}

.steps__item.step--completed {
    border-color: var(--color-success);
    background-color: rgba(40, 167, 69, 0.08);
}

.steps__item.step--upcoming {
    opacity: 0.8;
}

.steps__icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--color-white);
    box-shadow: var(--box-shadow);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    font-size: 1.4rem;
}

.steps__info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.steps__stage {
    font-size: var(--font-size-small);
    text-transform: uppercase;
    color: var(--color-gray-dark);
    letter-spacing: 1px;
    font-weight: 600;
}

.steps__title {
    margin: 0;
    font-weight: 600;
    color: var(--color-primary);
}

.steps__description {
    margin: 2px 0 0;
    font-size: var(--font-size-small);
    color: var(--color-gray-dark);
}

.steps__status {
    font-size: var(--font-size-small);
    font-weight: 600;
    margin-top: var(--spacing-xs);
    padding: 2px 10px;
    border-radius: 999px;
    width: fit-content;
    background: var(--color-gray-light);
    color: var(--color-gray-dark);
}

.steps__item.step--active .steps__status {
    background: rgba(139, 69, 19, 0.15);
    color: var(--color-primary);
}

.steps__item.step--completed .steps__status {
    background: rgba(40, 167, 69, 0.2);
    color: var(--color-success);
}

/* Travel Selection */
.travel-selection {
    margin-bottom: var(--spacing-xxl);
}

.travel-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.travel-option {
    background: var(--color-white);
    border: 2px solid var(--color-gray-medium);
    border-radius: var(--border-radius-large);
    padding: var(--spacing-xl);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    min-height: 200px;
}

.travel-option:hover {
    border-color: var(--color-accent);
    box-shadow: var(--box-shadow-hover);
    transform: translateY(-2px);
}

.travel-option.selected {
    border-color: var(--color-primary);
    background-color: rgba(139, 69, 19, 0.05);
}

.travel-option__icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.travel-option__icon i {
    font-size: 2.4rem;
    color: var(--color-primary);
}

.travel-option__title {
    font-size: var(--font-size-large);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.travel-option__description {
    color: var(--color-gray-dark);
    font-size: var(--font-size-small);
    text-align: center;
}

/* Pet Information Form */
.pet-info {
    background: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-large);
    box-shadow: var(--box-shadow);
    margin-bottom: var(--spacing-xxl);
}

.pet-form {
    display: grid;
    gap: var(--spacing-lg);
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.form-label {
    font-weight: 600;
    color: var(--color-primary);
    font-size: var(--font-size-base);
}

.form-input,
.form-select {
    padding: var(--spacing-md);
    border: 2px solid var(--color-gray-medium);
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    font-family: inherit;
    transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(139, 69, 19, 0.1);
}

.form-input:invalid,
.form-select:invalid {
    border-color: var(--color-danger);
}

/* Progress Bar */
.progress-section {
    background: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-large);
    box-shadow: var(--box-shadow);
    margin-bottom: var(--spacing-xxl);
}

.progress-bar {
    width: 100%;
    height: 20px;
    background-color: var(--color-gray-medium);
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: var(--spacing-md);
}

.progress-bar__fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    width: 0%;
    transition: width var(--transition-slow);
    border-radius: 10px;
}

.progress-text {
    text-align: center;
    font-weight: 600;
    color: var(--color-primary);
    font-size: var(--font-size-large);
}

/* Checklist */
.checklist-section {
    background: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-large);
    box-shadow: var(--box-shadow);
    margin-bottom: var(--spacing-xxl);
}

.checklist-tabs {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    border-bottom: 2px solid var(--color-gray-light);
}

.tab-button {
    background: none;
    border: none;
    padding: var(--spacing-md) var(--spacing-lg);
    cursor: pointer;
    font-size: var(--font-size-base);
    font-weight: 500;
    color: var(--color-gray-dark);
    border-bottom: 2px solid transparent;
    transition: all var(--transition-fast);
    white-space: nowrap;
    display: inline-flex;
    gap: var(--spacing-sm);
    align-items: center;
}

.tab-button:hover {
    color: var(--color-primary);
}

.tab-button.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

.tab-button i {
    font-size: 1rem;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.tab-title {
    font-size: var(--font-size-large);
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
    font-weight: 600;
}

.checklist-items {
    display: grid;
    gap: var(--spacing-md);
}

.checklist-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border: 1px solid var(--color-gray-medium);
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
}

.checklist-item:hover {
    background-color: var(--color-gray-light);
}

.checklist-item.completed {
    background-color: rgba(40, 167, 69, 0.1);
    border-color: var(--color-success);
}

.checklist-checkbox {
    width: 20px;
    height: 20px;
    margin-top: 2px;
    cursor: pointer;
    accent-color: var(--color-primary);
}

.checklist-content {
    flex: 1;
}

.checklist-title {
    font-weight: 600;
    color: var(--color-black);
    margin-bottom: var(--spacing-xs);
}

.checklist-description {
    color: var(--color-gray-dark);
    font-size: var(--font-size-small);
    line-height: 1.5;
}

/* Buttons */
.btn {
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    justify-content: center;
    min-width: 120px;
}

.btn i {
    font-size: 1rem;
}

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

.btn--primary:hover {
    background-color: var(--color-secondary);
    transform: translateY(-1px);
    box-shadow: var(--box-shadow-hover);
}

.btn--secondary {
    background-color: var(--color-gray-medium);
    color: var(--color-black);
}

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

.btn--ghost {
    background-color: transparent;
    color: var(--color-primary);
    border: 1px solid rgba(139, 69, 19, 0.4);
    box-shadow: none;
}

.btn--ghost:hover {
    background-color: rgba(139, 69, 19, 0.08);
    color: var(--color-primary);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Actions */
.actions-section {
    margin-bottom: var(--spacing-xxl);
}

.actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* FAQ */
.faq-section {
    background: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-large);
    box-shadow: var(--box-shadow);
    margin-bottom: var(--spacing-xxl);
}

.faq-intro {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.faq-intro__text {
    flex: 1;
    min-width: 240px;
    color: var(--color-gray-dark);
    line-height: 1.6;
}

.faq-list {
    display: grid;
    gap: var(--spacing-md);
}

.faq-item {
    border: 1px solid var(--color-gray-medium);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: var(--spacing-lg);
    background: var(--color-gray-light);
    border: none;
    text-align: left;
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color var(--transition-fast);
    gap: var(--spacing-md);
}

.faq-question:hover {
    background-color: var(--color-gray-medium);
}

.faq-question[aria-expanded="true"] {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.faq-question__info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.faq-question__text {
    font-weight: 600;
}

.faq-chip {
    font-size: var(--font-size-small);
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-primary);
    font-weight: 600;
}

.faq-question[aria-expanded="true"] .faq-chip {
    color: var(--color-white);
}

.faq-icon {
    font-size: var(--font-size-large);
    transition: transform var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.faq-question[aria-expanded="true"] .faq-icon i {
    transform: rotate(180deg);
}

.faq-icon i {
    transition: transform var(--transition-fast);
}

.faq-question[aria-expanded="true"] .faq-icon i {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 var(--spacing-lg);
    max-height: 0;
    overflow: hidden;
    transition: all var(--transition-normal);
}

.faq-question[aria-expanded="true"] + .faq-answer {
    padding: var(--spacing-lg);
    max-height: 200px;
}

.faq-answer p {
    color: var(--color-gray-dark);
    line-height: 1.6;
}

/* Footer */
.footer {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-lg) 0;
    text-align: center;
    margin-top: auto;
}

.footer__content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer__label {
    font-size: var(--font-size-small);
    opacity: 0.8;
    margin-bottom: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer__link {
    color: var(--color-white);
    text-decoration: none;
    font-weight: 600;
}

.footer__link:hover {
    text-decoration: underline;
}

.footer__links {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    justify-content: center;
}

.footer__brand {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.footer__logo {
    width: 48px;
    height: 48px;
    object-fit: contain;
    margin-bottom: var(--spacing-xs);
}

@media (max-width: 600px) {
    .footer__content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer__brand {
        align-items: center;
    }
    
    .footer__links {
        justify-content: center;
    }
}


/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

/* Pet Summary */
.pet-summary {
    background: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-large);
    box-shadow: var(--box-shadow);
    margin-bottom: var(--spacing-xxl);
}

.pet-summary__card {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--spacing-lg);
}

.pet-summary__item {
    background: var(--color-gray-light);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
}

.pet-summary__label {
    font-size: var(--font-size-small);
    text-transform: uppercase;
    color: var(--color-gray-dark);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.pet-summary__label i {
    color: var(--color-primary);
}

.pet-summary__value {
    font-size: var(--font-size-large);
    font-weight: 600;
    color: var(--color-primary);
    margin-top: var(--spacing-xs);
}

/* Privacy Page */
.privacy-body {
    background-color: var(--color-gray-light);
}

.privacy-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.privacy-nav {
    display: flex;
    justify-content: flex-start;
}

.privacy-card {
    background: var(--color-white);
    border-radius: var(--border-radius-large);
    padding: var(--spacing-xl);
    box-shadow: var(--box-shadow);
    line-height: 1.7;
}

.privacy-card h2,
.privacy-card h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.privacy-card ul {
    margin-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    color: var(--color-gray-dark);
}

.privacy-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--spacing-lg);
}

.loading-spinner {
    background: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-large);
    text-align: center;
    box-shadow: var(--box-shadow);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--color-gray-medium);
    border-top: 4px solid var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-md);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .steps-progress {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .faq-intro {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .faq-intro .btn {
        width: 100%;
        max-width: 320px;
    }
    
    .steps {
        grid-template-columns: 1fr;
    }
    
    .header__title {
        font-size: var(--font-size-xl);
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .travel-options {
        grid-template-columns: 1fr;
    }
    
    .checklist-tabs {
        flex-direction: column;
        gap: 0;
    }
    
    .tab-button {
        padding: var(--spacing-md);
        border-bottom: 1px solid var(--color-gray-medium);
        border-radius: 0;
    }
    
    .tab-button:last-child {
        border-bottom: none;
    }
    
    .actions {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
}

@media (max-width: 480px) {
    .main {
        padding: var(--spacing-lg) 0;
    }
    
    .pet-summary__card {
        grid-template-columns: 1fr;
    }
    
    .pet-info,
    .progress-section,
    .checklist-section,
    .faq-section {
        padding: var(--spacing-lg);
    }
    
    .travel-option {
        padding: var(--spacing-lg);
        min-height: 160px;
    }
    
    .travel-option__icon {
        font-size: 2.5rem;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --color-gray-medium: #999999;
        --color-gray-dark: #333333;
    }
    
    .travel-option {
        border-width: 3px;
    }
    
    .form-input,
    .form-select {
        border-width: 3px;
    }
}

/* Print styles */
@media print {
    .header,
    .footer,
    .actions-section,
    .faq-section {
        display: none;
    }
    
    .main {
        padding: 0;
    }
    
    .checklist-section {
        box-shadow: none;
        border: 1px solid var(--color-black);
    }
    
    .checklist-item {
        break-inside: avoid;
    }
}