/* =========================================================================
   N4 DENTAL CARE - ROOT STYLES AND VARIABLES
   Premium, Modern, and Calming Color Palette
   ========================================================================= */
   :root {
    /* Color Palette */
    --color-primary: #2C2C2C; /* Dark Charcoal from logo */
    --color-secondary: #F2A900; /* Mustard Yellow from logo */
    --color-accent: #FFF9E6; /* Light yellow for backgrounds */
    --color-text-dark: #1F2937;
    --color-text-muted: #6B7280;
    --color-bg-light: #FDFBF7;
    --color-white: #FFFFFF;
    
    /* Typography */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Transitions & Shadows */
    --transition-fast: 0.2s ease-in-out;
    --transition-slow: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-pill: 9999px;
}

/* =========================================================================
   RESET AND BASE STYLES
   ========================================================================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

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

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--color-primary);
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

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

ul {
    list-style: none;
}

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

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

.text-center {
    text-align: center;
}

/* =========================================================================
   TYPOGRAPHY SPECIFICS
   ========================================================================= */
.section-badge {
    display: inline-block;
    padding: 6px 16px;
    background-color: var(--color-accent);
    color: var(--color-secondary);
    font-weight: 600;
    font-size: 0.875rem;
    border-radius: var(--radius-pill);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.section-badge.center {
    margin: 0 auto var(--spacing-sm) auto;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-secondary);
    font-weight: 500;
    margin-bottom: var(--spacing-lg);
}

.lead-text {
    font-size: 1.25rem;
    color: var(--color-primary);
    font-weight: 500;
    margin-bottom: var(--spacing-md);
}

/* =========================================================================
   BUTTONS
   ========================================================================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 600;
    text-align: center;
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    border-radius: var(--radius-pill);
    font-family: var(--font-body);
}

.btn-small {
    padding: 0.5rem 1.25rem;
    font-size: 0.875rem;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 0.875rem 2rem;
}

.btn-primary:hover {
    background-color: var(--color-secondary);
    color: var(--color-primary); /* Dark text on yellow button */
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
    padding: 0.75rem 2rem;
}

.btn-secondary:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-2px);
}

.btn-large {
    padding: 1rem 2.5rem;
    font-size: 1.125rem;
}

/* =========================================================================
   NAVIGATION BAR
   ========================================================================= */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast);
    padding: var(--spacing-sm) 0;
}

.navbar.scrolled {
    padding: 10px 0;
    background-color: rgba(255, 255, 255, 0.98);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-heading);
}

.logo-mark {
    background-color: var(--color-primary);
    color: var(--color-white);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-weight: 800;
    font-size: 1.25rem;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a {
    font-weight: 500;
    color: var(--color-text-dark);
}

.nav-links a.btn-primary {
    color: var(--color-white);
}

.nav-links a.btn-primary:hover {
    color: var(--color-primary);
}

.nav-links a:not(.btn):hover {
    color: var(--color-secondary);
}

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

/* =========================================================================
   HERO SECTION
   ========================================================================= */
.hero {
    position: relative;
    padding-top: 120px;
    padding-bottom: var(--spacing-xl);
    background-color: var(--color-bg-light);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: -10%;
    right: -5%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--color-accent) 0%, rgba(255,255,255,0) 70%);
    border-radius: 50%;
    z-index: 0;
}

.hero-container {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.hero-badge {
    display: inline-block;
    padding: 8px 16px;
    background-color: var(--color-white);
    color: var(--color-secondary);
    font-weight: 600;
    border-radius: var(--radius-pill);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-md);
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1.1;
    margin-bottom: var(--spacing-sm);
}

.hero-title .highlight {
    color: var(--color-secondary);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
    max-width: 500px;
}

.hero-actions {
    display: flex;
    gap: 1rem;
}

.hero-visual {
    position: relative;
}

.image-wrapper {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.hero-img {
    width: 100%;
    height: 600px;
    object-fit: cover;
    object-position: left center;
    border-radius: var(--radius-lg);
    transition: transform var(--transition-slow);
}

.image-wrapper:hover .hero-img {
    transform: scale(1.03);
}

.stat-card {
    position: absolute;
    bottom: -20px;
    left: -20px;
    background: var(--color-white);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 1rem;
    z-index: 2;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
    100% { transform: translateY(0px); }
}

.stat-icon {
    background-color: var(--color-accent);
    color: var(--color-secondary);
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 1.5rem;
}

.stat-text {
    display: flex;
    flex-direction: column;
}

.stat-text strong {
    color: var(--color-primary);
    font-size: 1.1rem;
    font-family: var(--font-heading);
}

.stat-text span {
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

/* =========================================================================
   ABOUT SECTION
   ========================================================================= */
.about-container {
    display: grid;
    grid-template-columns: 5fr 7fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.about-img {
    width: 100%;
    height: 500px;
    object-fit: cover;
    border-radius: var(--radius-lg);
}

.credentials {
    color: var(--color-secondary);
    font-size: 1.5rem;
    font-weight: 500;
}

.about-content p {
    color: var(--color-text-muted);
    margin-bottom: 1rem;
}

/* =========================================================================
   SERVICES SECTION
   ========================================================================= */
.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.service-card {
    background: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-slow);
    border: 1px solid rgba(0,0,0,0.02);
}

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

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

.highlight-card .service-title, 
.highlight-card .service-desc {
    color: var(--color-white);
}

.highlight-card .service-icon {
    background-color: rgba(255,255,255,0.1);
    color: var(--color-white);
}

.service-icon {
    width: 64px;
    height: 64px;
    background-color: var(--color-accent);
    color: var(--color-secondary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
    transition: all var(--transition-fast);
}

.service-card:hover .service-icon {
    transform: scale(1.1);
}

.service-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
}

.service-desc {
    color: var(--color-text-muted);
}

/* =========================================================================
   GALLERY SECTION
   ========================================================================= */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.gallery-item {
    border-radius: var(--radius-md);
    overflow: hidden;
    display: block;
    position: relative;
}

.gallery-item::after {
    content: '';
    position: absolute;
    top:0; left:0; right:0; bottom:0;
    background: rgba(31, 63, 104, 0.2);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.gallery-item:hover::after {
    opacity: 1;
}

.gallery-item img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.gallery-item:hover img {
    transform: scale(1.05);
}

/* Layout adjustment for irregular grid */
.gallery-item:nth-child(1) { grid-column: span 2; grid-row: span 2; height: 100%; }
.gallery-item:nth-child(1) img { height: 500px; }

/* =========================================================================
   CONTACT SECTION
   ========================================================================= */
.contact-section {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.contact-section .section-title,
.contact-section h4 {
    color: var(--color-white);
}

.contact-section .section-badge {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--color-white);
}

.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
}

.contact-desc {
    color: rgba(255,255,255,0.8);
    margin-bottom: var(--spacing-md);
    font-size: 1.125rem;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.method {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.method-icon {
    width: 48px;
    height: 48px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--color-secondary);
}

.method-details p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 0.25rem;
}

.cta-card {
    background-color: var(--color-white);
    color: var(--color-text-dark);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.cta-card h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.cta-card p {
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
}

.cta-card .btn {
    width: 100%;
    margin-bottom: var(--spacing-sm);
}

.small-text {
    font-size: 0.875rem;
    color: var(--color-text-muted) !important;
}

/* =========================================================================
   FOOTER
   ========================================================================= */
.footer {
    padding: var(--spacing-lg) 0 var(--spacing-md) 0;
    background-color: #f3f4f6;
    border-top: 1px solid #e5e7eb;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.footer-brand p {
    margin-top: 1rem;
    color: var(--color-text-muted);
    max-width: 300px;
}

.footer-links h4 {
    margin-bottom: 1rem;
}

.footer-links ul li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: var(--color-text-muted);
}

.footer-links a:hover {
    color: var(--color-secondary);
}

.footer-legal {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid #e5e7eb;
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

/* =========================================================================
   MEDIA QUERIES (RESPONSIVE DESIGN)
   ========================================================================= */
@media (max-width: 992px) {
    .hero-title { font-size: 3rem; }
    .hero-container { grid-template-columns: 1fr; text-align: center; }
    .hero-actions { justify-content: center; }
    .stat-card { bottom: 20px; left: 20px; }
    .about-container { grid-template-columns: 1fr; }
    .about-visual { order: 2; }
    .about-content { order: 1; }
    .services-grid { grid-template-columns: 1fr; }
    .contact-container { grid-template-columns: 1fr; }
    .footer-content { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--color-white);
        flex-direction: column;
        padding: var(--spacing-md);
        box-shadow: var(--shadow-md);
        text-align: center;
    }
    
    .nav-links.active {
        display: flex;
    }

    .menu-toggle {
        display: block;
    }

    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .gallery-item:nth-child(1) { grid-column: span 2; }
    .gallery-item:nth-child(1) img { height: 300px; }
}

@media (max-width: 480px) {
    .hero-title { font-size: 2.5rem; }
    .hero-actions { flex-direction: column; }
    .gallery-grid { grid-template-columns: 1fr; }
    .gallery-item:nth-child(1) { grid-column: span 1; }
    .gallery-item:nth-child(1) img { height: 250px; }
}

/* =========================================================================
   MODAL
   ========================================================================= */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.9);
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    margin: auto;
    display: block;
    max-width: 90%;
    max-height: 90%;
    border-radius: var(--radius-md);
    animation: zoomIn 0.3s;
}

@keyframes zoomIn {
    from {transform:scale(0)}
    to {transform:scale(1)}
}

.modal-close {
    position: absolute;
    top: 15px;
    right: 35px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    transition: 0.3s;
}

.modal-close:hover,
.modal-close:focus {
    color: var(--color-secondary);
    text-decoration: none;
    cursor: pointer;
}