/* ====================================
   Healthcare Service Management Platform
   Main Stylesheet
   ==================================== */

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

:root {
    /* Color Palette - Healthcare Theme */
    --primary-color: #0891b2; /* Cyan 600 */
    --primary-dark: #0e7490; /* Cyan 700 */
    --primary-light: #06b6d4; /* Cyan 500 */
    --secondary-color: #0284c7; /* Sky 600 */
    --accent-color: #14b8a6; /* Teal 500 */
    --text-dark: #1e293b; /* Slate 800 */
    --text-light: #64748b; /* Slate 500 */
    --bg-light: #f8fafc; /* Slate 50 */
    --bg-white: #ffffff;
    --border-color: #e2e8f0; /* Slate 200 */
    --success-color: #10b981; /* Green 500 */
    --error-color: #ef4444; /* Red 500 */
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
    overflow-x: hidden;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

ul {
    list-style: none;
}

/* ====================================
   Typography
   ==================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.75rem;
}

h4 {
    font-size: 1.5rem;
}

p {
    margin-bottom: 1rem;
    color: var(--text-light);
}

/* ====================================
   Utility Classes
   ==================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

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

.section {
    padding: 4rem 0;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    text-align: center;
    color: var(--text-dark);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-light);
    text-align: center;
    margin-bottom: 3rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: 8px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--bg-white);
    box-shadow: var(--shadow);
}

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

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

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

/* ====================================
   Header & Navigation
   ==================================== */
.header {
    background-color: var(--bg-white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
}

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

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    font-size: 1.25rem;
}

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

.nav-link {
    color: var(--text-dark);
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

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

.nav-link.active {
    color: var(--primary-color);
}

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: var(--text-dark);
    transition: all 0.3s ease;
    border-radius: 2px;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* ====================================
   Hero Section
   ==================================== */
.hero {
    background: linear-gradient(135deg, #0891b2 0%, #0284c7 50%, #14b8a6 100%);
    color: var(--bg-white);
    padding: 6rem 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 600"><circle cx="100" cy="100" r="50" fill="rgba(255,255,255,0.05)"/><circle cx="900" cy="400" r="80" fill="rgba(255,255,255,0.05)"/><circle cx="1100" cy="150" r="40" fill="rgba(255,255,255,0.05)"/><path d="M0,300 Q300,200 600,300 T1200,300" stroke="rgba(255,255,255,0.1)" fill="none" stroke-width="2"/></svg>');
    background-size: cover;
    opacity: 0.5;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    color: var(--bg-white);
    animation: fadeInUp 0.8s ease;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    color: rgba(255, 255, 255, 0.95);
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero .btn {
    animation: fadeInUp 0.8s ease 0.4s both;
}

/* ====================================
   About Section
   ==================================== */
.about {
    background-color: var(--bg-white);
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.about-content p {
    font-size: 1.125rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.feature-highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-highlight {
    padding: 1.5rem;
    background-color: var(--bg-light);
    border-radius: 12px;
    transition: transform 0.3s ease;
}

.feature-highlight:hover {
    transform: translateY(-5px);
}

.feature-highlight-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

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

.feature-highlight p {
    font-size: 0.95rem;
}

/* ====================================
   Features Section
   ==================================== */
.features {
    background-color: var(--bg-light);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background-color: var(--bg-white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateY(20px);
}

.feature-card.animate {
    animation: fadeInUp 0.6s ease forwards;
}

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

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    color: var(--bg-white);
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.7;
}

.feature-list {
    margin-top: 1rem;
    padding-left: 1.25rem;
}

.feature-list li {
    list-style: disc;
    color: var(--text-light);
    margin-bottom: 0.5rem;
}

/* ====================================
   Service Cards (Doctor, Lab, Insurance)
   ==================================== */
.service-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.service-card {
    background-color: var(--bg-white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

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

.service-card-image {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, var(--primary-light), var(--accent-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 3rem;
}

.service-card-content {
    padding: 1.5rem;
}

.service-card-content h4 {
    margin-bottom: 0.5rem;
}

.service-card-meta {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin: 1rem 0;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-light);
    font-size: 0.9rem;
}

.meta-icon {
    color: var(--primary-color);
}

.service-card .btn {
    width: 100%;
    margin-top: 1rem;
}

/* ====================================
   How It Works Section
   ==================================== */
.how-it-works {
    background-color: var(--bg-white);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.step-card {
    text-align: center;
    padding: 2rem;
    background-color: var(--bg-light);
    border-radius: 12px;
    position: relative;
    transition: all 0.3s ease;
}

.step-card:hover {
    transform: scale(1.05);
    background-color: var(--bg-white);
    box-shadow: var(--shadow-lg);
}

.step-number {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--bg-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 1.5rem;
    box-shadow: var(--shadow);
}

.step-card h4 {
    margin-bottom: 1rem;
}

.step-card p {
    font-size: 0.95rem;
}

/* ====================================
   App Screens Preview Section
   ==================================== */
.app-screens {
    background: linear-gradient(135deg, var(--bg-light), var(--bg-white));
    padding: 4rem 0;
}

.screens-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.screen-preview {
    background-color: var(--bg-white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
}

.screen-preview:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-xl);
}

.screen-image {
    width: 100%;
    height: 400px;
    background: linear-gradient(135deg, #e0f2fe, #cffafe);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 3rem;
}

.screen-caption {
    padding: 1rem;
    text-align: center;
    background-color: var(--bg-white);
}

.screen-caption h4 {
    font-size: 1.125rem;
    margin-bottom: 0.25rem;
}

.screen-caption p {
    font-size: 0.875rem;
}

/* ====================================
   Contact Page
   ==================================== */
.contact-section {
    background-color: var(--bg-light);
}

.contact-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info {
    background-color: var(--bg-white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.contact-info h3 {
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.contact-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.contact-details h4 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.contact-details p {
    color: var(--text-light);
    margin-bottom: 0;
}

.contact-form {
    background-color: var(--bg-white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.contact-form h3 {
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-dark);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.875rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

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

.form-group.error input,
.form-group.error textarea {
    border-color: var(--error-color);
}

.error-message {
    color: var(--error-color);
    font-size: 0.875rem;
    margin-top: 0.25rem;
    display: none;
}

.form-group.error .error-message {
    display: block;
}

.success-message {
    background-color: #d1fae5;
    color: #065f46;
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    display: none;
}

.success-message.show {
    display: block;
}

/* ====================================
   Privacy Policy & Terms Pages
   ==================================== */
.policy-section {
    background-color: var(--bg-white);
    padding: 4rem 0;
}

.policy-content {
    max-width: 900px;
    margin: 0 auto;
    background-color: var(--bg-white);
    padding: 3rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.policy-content h1 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.policy-content h2 {
    color: var(--text-dark);
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    font-size: 1.75rem;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.policy-content h3 {
    color: var(--text-dark);
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
    font-size: 1.25rem;
}

.policy-content p {
    margin-bottom: 1.25rem;
    line-height: 1.8;
}

.policy-content ul {
    list-style: disc;
    margin-left: 2rem;
    margin-bottom: 1.25rem;
}

.policy-content ul li {
    margin-bottom: 0.5rem;
    color: var(--text-light);
    line-height: 1.7;
}

.policy-content strong {
    color: var(--text-dark);
    font-weight: 600;
}

.last-updated {
    font-style: italic;
    color: var(--text-light);
    margin-bottom: 2rem;
    font-size: 0.95rem;
}

/* ====================================
   Footer
   ==================================== */
.footer {
    background-color: var(--text-dark);
    color: var(--bg-white);
    padding: 3rem 0 1.5rem;
    margin-top: auto;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    color: var(--bg-white);
    margin-bottom: 1.5rem;
    font-size: 1.25rem;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.7;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-link {
    color: rgba(255, 255, 255, 0.8);
    transition: color 0.3s ease;
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1.5rem;
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 0;
}

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

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

.fade-in {
    animation: fadeIn 0.6s ease;
}

/* Scroll Animation Classes */
.scroll-animate {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.scroll-animate.active {
    opacity: 1;
    transform: translateY(0);
}

/* ====================================
   Payment Processing Page Styles
   ==================================== */

/* Payment Overlay - Full Screen */
.payment-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: linear-gradient(135deg, rgba(8, 145, 178, 0.95), rgba(20, 184, 166, 0.95));
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    padding: 2rem;
}

/* Processing Card */
.processing-card {
    background: var(--bg-white);
    border-radius: 12px;
    box-shadow: var(--shadow-xl);
    padding: 3rem 2rem;
    max-width: 500px;
    width: 100%;
    text-align: center;
    animation: fadeInScale 0.5s ease;
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Processing Icon Container */
.processing-icon {
    position: relative;
    width: 120px;
    height: 120px;
    margin: 0 auto 2rem;
}

/* Spinner Animation */
.spinner {
    position: absolute;
    width: 100%;
    height: 100%;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Payment Emoji Icon */
.payment-emoji {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 3rem;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        transform: translate(-50%, -50%) scale(1.1);
    }
}

/* Processing Title */
.processing-title {
    font-size: 2rem;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
    font-weight: 700;
}

/* Processing Message */
.processing-message {
    color: var(--text-light);
    font-size: 1rem;
    margin-bottom: 2rem;
    line-height: 1.6;
}

/* Processing Status Indicator */
.processing-status {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 2rem;
    padding: 1rem;
    background: var(--bg-light);
    border-radius: 8px;
}

.status-indicator {
    width: 12px;
    height: 12px;
    background: var(--success-color);
    border-radius: 50%;
    animation: blink 1.5s ease-in-out infinite;
}

@keyframes blink {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.3;
    }
}

.status-text {
    color: var(--text-dark);
    font-size: 0.875rem;
    font-weight: 500;
}

/* Close Payment Button */
.close-payment-btn {
    width: 100%;
    max-width: 300px;
    margin: 0 auto;
    padding: 1rem 2rem;
    font-size: 1.125rem;
    font-weight: 600;
}

/* Processing Note */
.processing-note {
    margin-top: 1.5rem;
    font-size: 0.75rem;
    color: var(--text-light);
    font-style: italic;
}

/* ====================================
   Responsive Design - Mobile First
   ==================================== */

/* Tablet Styles */
@media (min-width: 768px) {
    .contact-container {
        grid-template-columns: 1fr 1fr;
    }
    
    .hero h1 {
        font-size: 3.5rem;
    }
    
    .section-title {
        font-size: 2.75rem;
    }
}

/* Desktop Styles */
@media (min-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .steps-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .screens-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Mobile Styles */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--bg-white);
        width: 100%;
        text-align: center;
        transition: left 0.3s ease;
        box-shadow: var(--shadow-lg);
        padding: 2rem 0;
        gap: 1.5rem;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.875rem;
    }
    
    .section {
        padding: 3rem 0;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .steps-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-container {
        grid-template-columns: 1fr;
    }
    
    .policy-content {
        padding: 1.5rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

/* Extra Small Mobile */
@media (max-width: 480px) {
    h1 {
        font-size: 1.75rem;
    }
    
    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.95rem;
    }
    
    .feature-card {
        padding: 1.5rem;
    }
    
    .step-card {
        padding: 1.5rem;
    }
}