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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #171717;
    background: #ffffff;
}

/* Container */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1rem;
}

@media (min-width: 640px) {
    .container {
        padding: 0 1.5rem;
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 2rem;
    }
}

/* Navigation */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 50;
    border-bottom: 1px solid #e6fffa;
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 5rem;
}

@media (min-width: 640px) {
    .nav-container {
        padding: 0 1.5rem;
    }
}

@media (min-width: 1024px) {
    .nav-container {
        padding: 0 2rem;
    }
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo {
    width: 2.5rem;
    height: 2.5rem;
    background: linear-gradient(135deg, #0d9488, #0891b2);
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
}

.nav-brand h1 {
    font-size: 1.25rem;
    font-weight: 700;
    color: #111827;
}

@media (min-width: 640px) {
    .nav-brand h1 {
        font-size: 1.5rem;
    }
}

.nav-brand p {
    font-size: 0.875rem;
    color: #0d9488;
    font-weight: 500;
}

/* Desktop Navigation */
.desktop-menu {
    display: none;
    align-items: center;
    gap: 2rem;
}

@media (min-width: 1024px) {
    .desktop-menu {
        display: flex;
    }
}

.nav-link {
    color: #374151;
    font-weight: 500;
    text-decoration: none;
    transition: color 0.2s;
}

.nav-link:hover {
    color: #0d9488;
}

/* Buttons */
.btn-primary {
    background: #0d9488;
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 9999px;
    font-weight: 500;
    border: none;
    cursor: pointer;
    transition: background-color 0.2s;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.btn-primary:hover {
    background: #0f766e;
}

.btn-secondary {
    color: #0d9488;
    border: 2px solid #0d9488;
    background: transparent;
    padding: 0.5rem 1rem;
    border-radius: 9999px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s;
}

.btn-secondary:hover {
    background: #f0fdfa;
}

/* Language Toggle */
.language-toggle {
    display: flex;
    align-items: center;
}

.lang-btn {
    background: transparent;
    border: none;
    color: #374151;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem;
    border-radius: 0.375rem;
    transition: background-color 0.2s;
}

.lang-btn:hover {
    background: #f3f4f6;
}

/* Mobile Menu */
.mobile-menu-btn {
    display: block;
}

@media (min-width: 1024px) {
    .mobile-menu-btn {
        display: none;
    }
}

.menu-btn {
    background: transparent;
    border: none;
    color: #374151;
    cursor: pointer;
    padding: 0.5rem;
    transition: color 0.2s;
}

.menu-btn:hover {
    color: #0d9488;
}

.mobile-menu {
    display: none;
    padding: 1rem 0;
    border-top: 1px solid #f3f4f6;
    animation: fadeInUp 0.6s ease-out;
}

.mobile-menu.active {
    display: block;
}

.mobile-menu-content {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding-bottom: 1rem;
}

.mobile-nav-link {
    color: #374151;
    font-weight: 500;
    text-decoration: none;
    padding: 0.5rem;
    transition: color 0.2s;
}

.mobile-nav-link:hover {
    color: #0d9488;
}

.mobile-buttons {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 0.5rem;
}

.mobile-btn {
    font-size: 0.875rem;
    padding: 0.25rem 0.75rem;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 0;
    margin: 0;
}

.hero-background {
    position: absolute;
    inset: 0;
}

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

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to right, rgba(15, 118, 110, 0.9), rgba(30, 58, 138, 0.8), rgba(79, 70, 229, 0.9));
}

.hero-content {
    position: relative;
    z-index: 10;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 0.5rem;
    text-align: center;
}

@media (min-width: 640px) {
    .hero-content {
        padding: 0 1.5rem;
    }
}

@media (min-width: 1024px) {
    .hero-content {
        padding: 0 2rem;
    }
}

.hero-text {
    max-width: 64rem;
    margin: 0 auto;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    color: white;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

@media (min-width: 768px) {
    .hero-title {
        font-size: 4.5rem;
    }
}

.hero-subtitle {
    display: block;
    background: linear-gradient(to right, #5eead4, #93c5fd);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 3rem;
    line-height: 1.6;
    max-width: 48rem;
    margin-left: auto;
    margin-right: auto;
}

@media (min-width: 768px) {
    .hero-description {
        font-size: 1.5rem;
    }
}

.hero-buttons {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    justify-content: center;
    margin-bottom: 4rem;
}

@media (min-width: 640px) {
    .hero-buttons {
        flex-direction: row;
    }
}

.btn-hero-primary {
    background: linear-gradient(to right, #14b8a6, #3b82f6);
    color: white;
    padding: 1rem 3rem;
    border-radius: 9999px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    font-size: 1.125rem;
    transform: translateY(0);
}

.btn-hero-primary:hover {
    background: linear-gradient(to right, #0f766e, #2563eb);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.4);
    transform: translateY(-4px);
}

.btn-hero-secondary {
    border: 2px solid white;
    color: white;
    background: transparent;
    padding: 1rem 3rem;
    border-radius: 9999px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    font-size: 1.125rem;
}

.btn-hero-secondary:hover {
    background: white;
    color: #0d9488;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    max-width: 64rem;
    margin: 0 auto;
}

@media (min-width: 640px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }
}

@media (min-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 2rem;
    }
}

.stat-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 1rem;
    padding: 1.5rem;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: white;
    display: inline-block;
}

.stat-suffix {
    font-size: 1.5rem;
    font-weight: 600;
    color: #5eead4;
    display: inline-block;
}

.stat-label {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.8);
    margin-top: 0.5rem;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    color: white;
    animation: bounce 2s infinite;
}

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

/* Sections */
.services, .about, .contact {
    padding: 6rem 0;
}

.services {
    background: white;
}

.about {
    background: linear-gradient(to bottom right, #f9fafb, #dbeafe);
}

.contact {
    background: white;
}

.section-header {
    text-align: center;
    margin-bottom: 5rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #111827;
    margin-bottom: 1.5rem;
}

@media (min-width: 768px) {
    .section-title {
        font-size: 3rem;
    }
}

.section-subtitle {
    font-size: 1.25rem;
    color: #6b7280;
    max-width: 48rem;
    margin: 0 auto 1rem;
}

.section-hint {
    font-size: 0.875rem;
    color: #0d9488;
    font-weight: 500;
}

/* Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }
}

@media (min-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 2rem;
    }
}

.service-card {
    background: white;
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    transition: all 0.3s;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.service-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.service-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.service-gradient {
    position: absolute;
    inset: 0;
    opacity: 0.8;
}

.billing-gradient {
    background: linear-gradient(135deg, #14b8a6, #3b82f6);
}

.credentialing-gradient {
    background: linear-gradient(135deg, #3b82f6, #6366f1);
}

.recovery-gradient {
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
}

.verification-gradient {
    background: linear-gradient(135deg, #8b5cf6, #ec4899);
}

.denial-gradient {
    background: linear-gradient(135deg, #ec4899, #ef4444);
}

.analytics-gradient {
    background: linear-gradient(135deg, #ef4444, #f97316);
}

.service-content {
    padding: 1.5rem;
}

.service-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #111827;
    margin-bottom: 0.75rem;
}

.service-content p {
    color: #6b7280;
    line-height: 1.6;
}

/* About Section */
.about-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    align-items: center;
}

@media (min-width: 1024px) {
    .about-content {
        grid-template-columns: 1fr 1fr;
        gap: 4rem;
    }
}

.about-description {
    font-size: 1.125rem;
    color: #6b7280;
    margin-bottom: 2rem;
    line-height: 1.6;
}

.features-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.feature-item i {
    color: #0d9488;
    font-size: 1.25rem;
}

.feature-item span {
    color: #374151;
    font-weight: 500;
}

.about-image img {
    border-radius: 1rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    width: 100%;
    height: auto;
}

/* Contact Section */
.contact-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 1024px) {
    .contact-content {
        grid-template-columns: 1fr 1fr;
        gap: 4rem;
    }
}

.contact-info-section {
    position: relative;
}

.contact-image {
    position: relative;
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.contact-image img {
    width: 100%;
    height: 24rem;
    object-fit: cover;
}

.contact-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.6), transparent);
    border-radius: 1rem;
}

.contact-details {
    position: absolute;
    bottom: 2rem;
    left: 2rem;
    color: white;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.contact-item i {
    font-size: 1.25rem;
    color: #5eead4;
}

.contact-item h4 {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.contact-item p {
    opacity: 0.9;
}

/* Contact Form */
.contact-form {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.contact-form h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #111827;
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-weight: 500;
    color: #374151;
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid #d1d5db;
    border-radius: 0.5rem;
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #0d9488;
    box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.btn-submit {
    width: 100%;
    background: #0d9488;
    color: white;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s;
}

.btn-submit:hover {
    background: #0f766e;
}

/* Footer */
.footer {
    background: #111827;
    color: white;
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

@media (min-width: 768px) {
    .footer-content {
        grid-template-columns: 2fr 1fr;
        gap: 4rem;
    }
}

@media (min-width: 1024px) {
    .footer-content {
        grid-template-columns: 2fr 3fr;
    }
}

.footer-brand {
    margin-bottom: 1.5rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.footer-logo i {
    font-size: 1.5rem;
    color: #0d9488;
}

.footer-logo h3 {
    font-size: 1.5rem;
    font-weight: 700;
}

.footer-logo p {
    color: #0d9488;
    font-weight: 500;
}

.footer-description {
    color: #9ca3af;
    line-height: 1.6;
}

.footer-links {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

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

.footer-section h4 {
    font-weight: 600;
    margin-bottom: 1rem;
    color: white;
}

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

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

.footer-section a {
    color: #9ca3af;
    text-decoration: none;
    transition: color 0.2s;
}

.footer-section a:hover {
    color: #0d9488;
}

.footer-section li i {
    margin-right: 0.5rem;
    color: #0d9488;
}

.footer-bottom {
    border-top: 1px solid #374151;
    padding-top: 2rem;
    text-align: center;
    color: #9ca3af;
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: white;
    border-radius: 1rem;
    padding: 0;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    border-bottom: 1px solid #e5e7eb;
}

.modal-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #111827;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #6b7280;
    padding: 0.5rem;
    border-radius: 0.375rem;
    transition: background-color 0.2s;
}

.modal-close:hover {
    background: #f3f4f6;
}

.login-form,
.appointment-form,
.service-modal-content {
    padding: 2rem;
}

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

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Utility Classes */
.hidden {
    display: none;
}

/* Responsive Design */
@media (max-width: 640px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-description {
        font-size: 1.125rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .contact-form {
        padding: 1.5rem;
    }
    
    .modal-content {
        width: 95%;
        margin: 1rem;
    }
}

/* Smooth scrolling for anchor links */
html {
    scroll-behavior: smooth;
}

/* Focus styles for accessibility */
button:focus,
input:focus,
select:focus,
textarea:focus {
    outline: 2px solid #0d9488;
    outline-offset: 2px;
}

/* Loading states */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

/* Success/Error states */
.success {
    border-color: #10b981 !important;
}

.error {
    border-color: #ef4444 !important;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
    background: #0d9488;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #0f766e;
}