/*
 * City Veterinary Hospital Nepal - Modern Styles
 * Premium Design with Modern CSS Practices
 */

:root {
    /* Color Palette - Theme 2: Elegant Earth (Luxury Natural) */
    --primary-color: #2C5F2D;      /* Rich Forest Green */
    --primary-dark: #1a3a1b;       /* Darker Forest */
    --primary-light: #97BC62;      /* Muted Olive */
    --secondary-color: #1A1A1A;    /* Deep Charcoal */
    --accent-color: #D9CAB3;       /* Beige-Gold Tint */
    --text-dark: #1A1A1A;          /* Deep Black */
    --text-light: #666666;         /* Medium Gray */
    --text-white: #ffffff;
    --bg-light: #FAFAFA;           /* Very Light Gray */
    --bg-white: #ffffff;
    --border-color: #e5e5e5;

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

    /* Typography */
    --font-primary: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-secondary: 'Roboto', sans-serif;

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

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
}

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

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

body {
    font-family: var(--font-primary);
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
    background-color: var(--bg-white);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    color: var(--text-dark);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.75rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

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

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

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

/* Top Header Bar */
.top-header-bar {
    background: var(--bg-light);
    padding: 0.75rem 0;
    font-size: 0.9rem;
    border-bottom: 1px solid var(--border-color);
}

.top-header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.top-header-content p {
    margin: 0;
    color: var(--text-dark);
}

.top-header-content i {
    margin-right: 0.5rem;
    color: var(--primary-color);
}

/* Utility Classes */
.container-custom {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

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

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

.section-title h2 {
    position: relative;
    display: inline-block;
    padding-bottom: var(--spacing-sm);
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
    border-radius: var(--radius-sm);
}

/* Modern Header/Navbar */
.modern-header {
    position: sticky;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all var(--transition-normal);
}

.modern-header.scrolled {
    box-shadow: var(--shadow-md);
    padding: 0.5rem 0;
}

.navbar-modern {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem var(--spacing-sm);
    max-width: 1200px;
    margin: 0 auto;
}

.logo-modern {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-modern img {
    height: 45px;
    width: auto;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-menu a {
    color: var(--text-dark);
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav-menu a:hover,
.nav-menu a.active {
    background: var(--primary-color);
    color: var(--text-white);
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-dark);
}

/* Hero Section */
.hero-modern {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    margin-top: 80px;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
}

.hero-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(16, 202, 183, 0.9), rgba(13, 168, 154, 0.8));
    z-index: 1;
}

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

.hero-content {
    position: relative;
    z-index: 2;
    color: var(--text-white);
    max-width: 700px;
}

.hero-content h1 {
    color: var(--text-white);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 0.8s ease;
}

.hero-content p {
    color: rgba(255, 255, 255, 0.95);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.4s both;
}

/* Modern Buttons */
.btn-modern {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    border: none;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

.btn-primary-modern:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: var(--primary-dark);
}

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

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

/* Service Cards */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.service-card {
    background: var(--bg-white);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    text-align: center;
    border: 1px solid var(--border-color);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    font-size: 2rem;
    color: var(--text-white);
    transition: all var(--transition-normal);
}

.service-card:hover .service-icon {
    transform: rotate(360deg);
}

.service-card h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--text-dark);
}

.service-card p {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* Appointment Section */
.appointment-section {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--text-white);
}

.appointment-form {
    background: var(--bg-white);
    padding: var(--spacing-md);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    max-width: 800px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: var(--spacing-sm);
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-dark);
}

.form-control-modern {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: all var(--transition-fast);
    font-family: var(--font-primary);
}

.form-control-modern:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(16, 202, 183, 0.1);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-sm);
}

/* Contact Info Cards */
.contact-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

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

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

.contact-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-color);
    border-radius: 50%;
    font-size: 1.5rem;
    color: var(--text-white);
}

.contact-card h4 {
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.contact-card p,
.contact-card a {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* Footer */
.modern-footer {
    background: var(--primary-color);
    color: rgba(255, 255, 255, 0.9);
    padding: var(--spacing-lg) 0 var(--spacing-sm);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.footer-section h3 {
    color: var(--text-white);
    margin-bottom: var(--spacing-sm);
}

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

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
    color: rgba(255, 255, 255, 0.8);
}

.footer-section a {
    color: rgba(255, 255, 255, 0.7);
    transition: all var(--transition-fast);
}

.footer-section a:hover {
    color: var(--accent-color);
    padding-left: 5px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-sm);
    text-align: center;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.9);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.9);
    margin: 0;
}

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

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

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

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Loading Spinner */
.spinner {
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

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

/* Alert Messages */
.alert-modern {
    padding: 1rem 1.5rem;
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    animation: fadeIn 0.3s ease;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border-left: 4px solid #28a745;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border-left: 4px solid #dc3545;
}

/* Responsive Design */
@media (max-width: 992px) {
    /* 2-column grids become 1 column on tablets */
    [style*="grid-template-columns: 1fr 1fr"],
    [style*="grid-template-columns: 2fr 1fr"] {
        grid-template-columns: 1fr !important;
    }

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

    /* 4-column grids become 2 columns on tablets */
    [style*="grid-template-columns: repeat(4, 1fr)"],
    [style*="grid-template-columns: 1fr 1fr 1fr 1fr"] {
        grid-template-columns: repeat(2, 1fr) !important;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        flex-direction: column;
        background: var(--bg-white);
        width: 100%;
        padding: var(--spacing-md);
        box-shadow: var(--shadow-lg);
        transition: left var(--transition-normal);
    }

    .nav-menu.active {
        left: 0;
    }

    .mobile-toggle {
        display: block;
    }

    .hero-modern {
        min-height: 80vh;
        margin-top: 60px;
    }

    .hero-buttons {
        flex-direction: column;
    }

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

    .form-row {
        grid-template-columns: 1fr;
    }

    /* Force all grid columns to 1 column on mobile */
    [style*="grid-template-columns"] {
        grid-template-columns: 1fr !important;
    }

    /* Reduce gaps on mobile */
    [style*="gap: 4rem"] {
        gap: 2rem !important;
    }

    [style*="gap: 3rem"] {
        gap: 1.5rem !important;
    }

    /* Text alignment for mobile */
    [style*="text-align: right"] {
        text-align: left !important;
    }

    /* Reverse order for better mobile flow */
    [style*="grid-template-columns: 1fr 1fr"] > div:first-child {
        order: 2;
    }

    [style*="grid-template-columns: 1fr 1fr"] > div:last-child {
        order: 1;
    }
}

@media (max-width: 576px) {
    /* Extra small devices - ensure everything is single column */
    .services-grid {
        grid-template-columns: 1fr !important;
    }

    .footer-content {
        grid-template-columns: 1fr !important;
    }
}

/* Print Styles */
@media print {
    .modern-header,
    .mobile-toggle,
    .hero-buttons,
    .modern-footer {
        display: none;
    }
}

/* Premium Preloader */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 99999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.preloader.hidden {
    opacity: 0;
    visibility: hidden;
}

.preloader-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

.preloader-logo {
    animation: logoFloat 2s ease-in-out infinite;
}

.preloader-logo img {
    width: 120px;
    height: auto;
    filter: drop-shadow(0 10px 20px rgba(0, 0, 0, 0.2));
}

/* Paw Print Animation */
.preloader-animation {
    position: relative;
    width: 100px;
    height: 100px;
}

.paw-print {
    position: absolute;
    width: 20px;
    height: 20px;
    background: var(--accent-color);
    border-radius: 50%;
    animation: pawWalk 1.5s ease-in-out infinite;
}

.paw-print:nth-child(1) {
    top: 0;
    left: 40px;
    animation-delay: 0s;
}

.paw-print:nth-child(2) {
    top: 20px;
    left: 60px;
    animation-delay: 0.2s;
}

.paw-print:nth-child(3) {
    top: 40px;
    left: 40px;
    animation-delay: 0.4s;
}

.paw-print:nth-child(4) {
    top: 60px;
    left: 20px;
    animation-delay: 0.6s;
}

/* Alternative: Spinning Circle Loader */
.circle-loader {
    width: 80px;
    height: 80px;
    border: 6px solid rgba(255, 255, 255, 0.2);
    border-top: 6px solid var(--accent-color);
    border-radius: 50%;
    animation: circleSpinner 1s linear infinite;
}

/* Heart Beat Animation */
.heart-loader {
    width: 60px;
    height: 60px;
    position: relative;
}

.heart-loader::before,
.heart-loader::after {
    content: '';
    position: absolute;
    width: 30px;
    height: 48px;
    background: var(--accent-color);
    border-radius: 30px 30px 0 0;
    animation: heartBeat 1.2s ease-in-out infinite;
}

.heart-loader::before {
    left: 30px;
    transform: rotate(-45deg);
    transform-origin: 0 100%;
}

.heart-loader::after {
    left: 0;
    transform: rotate(45deg);
    transform-origin: 100% 100%;
}

/* Loading Text */
.preloader-text {
    color: var(--text-white);
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    animation: textPulse 1.5s ease-in-out infinite;
}

.preloader-text::after {
    content: '';
    animation: loadingDots 1.5s steps(4, end) infinite;
}

/* Progress Bar */
.preloader-progress {
    width: 250px;
    height: 4px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    overflow: hidden;
    margin-top: 1rem;
}

.preloader-progress-bar {
    height: 100%;
    background: var(--accent-color);
    border-radius: 10px;
    animation: progressBar 2s ease-in-out infinite;
}

/* Preloader Animations */
@keyframes logoFloat {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

@keyframes pawWalk {
    0% {
        opacity: 0;
        transform: scale(0.5);
    }
    50% {
        opacity: 1;
        transform: scale(1.2);
    }
    100% {
        opacity: 0;
        transform: scale(0.5);
    }
}

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

@keyframes heartBeat {
    0%, 100% {
        transform: scale(1);
    }
    25% {
        transform: scale(1.1);
    }
    50% {
        transform: scale(0.9);
    }
}

@keyframes textPulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

@keyframes loadingDots {
    0% {
        content: '';
    }
    25% {
        content: '.';
    }
    50% {
        content: '..';
    }
    75%, 100% {
        content: '...';
    }
}

@keyframes progressBar {
    0% {
        width: 0%;
    }
    50% {
        width: 70%;
    }
    100% {
        width: 100%;
    }
}

/* Accessibility */
.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;
}

/* Focus Styles for Accessibility */
*:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}