/**
 * PhysioHealth Website Styles
 * Mobile-first responsive design
 */

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

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
    overflow-x: hidden;
}

body.mobile-menu-open {
    overflow: hidden;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: 2rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.1rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: 1rem;
}

a {
    color: #4a90c2;
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #2c5aa0;
}

/* ===== Layout Components ===== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    color: #2c5aa0;
    margin-bottom: 0.5rem;
}

.section-header p {
    color: #666;
    font-size: 1.1rem;
}

/* ===== Header Styles ===== */
.site-header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.site-header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
}

.site-header.admin-header {
    background: linear-gradient(135deg, #2c5aa0 0%, #4a90c2 100%);
    color: white;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
}

/* Logo Styles */
.header-logo .logo-link {
    display: flex;
    align-items: center;
    color: inherit;
}

.site-logo {
    height: 40px;
    width: auto;
}

.logo-text {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: bold;
}

.logo-text i {
    margin-right: 0.5rem;
    color: #4a90c2;
}

.admin-header .logo-text i {
    color: white;
}

/* Navigation Styles */
.header-nav {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-menu {
    display: none;
    list-style: none;
    gap: 2rem;
    margin: 0;
}

.nav-link {
    color: #333;
    font-weight: 500;
    padding: 0.5rem 0;
    border-bottom: 2px solid transparent;
    transition: all 0.3s ease;
}

.nav-link:hover {
    color: #4a90c2;
    border-bottom-color: #4a90c2;
}

.admin-header .nav-link {
    color: white;
}

.admin-header .nav-link:hover {
    color: #e3f2fd;
    border-bottom-color: #e3f2fd;
}

/* Admin User Menu */
.admin-user-menu {
    display: none;
    align-items: center;
    gap: 1rem;
    color: white;
}

.welcome-text {
    font-size: 0.9rem;
}

.logout-btn {
    background: rgba(255,255,255,0.2);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    font-size: 0.9rem;
    transition: background 0.3s ease;
}

.logout-btn:hover {
    background: rgba(255,255,255,0.3);
    color: white;
}

/* Header CTA */
.header-cta {
    display: none;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 30px;
    height: 30px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.hamburger-line {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 2px 0;
    transition: 0.3s;
    transform-origin: center;
}

.admin-header .hamburger-line {
    background: white;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 6px);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(3) {
    transform: rotate(45deg) translate(-5px, -6px);
}

/* Mobile Navigation */
.mobile-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.admin-header .mobile-nav {
    background: #2c5aa0;
}

.mobile-nav.active {
    display: block;
    max-height: 400px;
}

.mobile-nav-menu {
    list-style: none;
    padding: 1rem 0;
}

.mobile-nav-link {
    display: block;
    padding: 1rem 1.5rem;
    color: #333;
    font-weight: 500;
    border-bottom: 1px solid #eee;
    transition: all 0.3s ease;
}

.admin-header .mobile-nav-link {
    color: white;
    border-bottom-color: rgba(255,255,255,0.1);
}

.mobile-nav-link:hover {
    background: #f8f9fa;
    color: #4a90c2;
    padding-left: 2rem;
}

.admin-header .mobile-nav-link:hover {
    background: rgba(255,255,255,0.1);
    color: white;
}

.logout-link {
    color: #dc3545 !important;
}

.admin-header .logout-link {
    color: #ffcdd2 !important;
}

/* ===== Button Styles ===== */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 5px;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    font-size: 1rem;
    line-height: 1;
}

.btn-primary {
    background: #4a90c2;
    color: white;
}

.btn-primary:hover {
    background: #2c5aa0;
    color: white;
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: #4a90c2;
    border: 2px solid #4a90c2;
}

.btn-secondary:hover {
    background: #4a90c2;
    color: white;
    transform: translateY(-2px);
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* ===== Hero Section ===== */
.hero-section {
    background: linear-gradient(135deg, #4a90c2 0%, #2c5aa0 100%);
    color: white;
    padding: 8rem 0 4rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-section::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 1000 100" fill="rgba(255,255,255,0.1)"><polygon points="0,20 50,40 100,20 150,40 200,20 250,40 300,20 350,40 400,20 450,40 500,20 550,40 600,20 650,40 700,20 750,40 800,20 850,40 900,20 950,40 1000,20 1000,100 0,100"/></svg>') repeat-x bottom;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ===== Message Alerts ===== */
.message-container {
    padding: 1rem 0;
}

.alert {
    padding: 1rem 1.5rem;
    border-radius: 5px;
    margin-bottom: 1rem;
    font-weight: 500;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* ===== Services Section ===== */
.services-section {
    padding: 4rem 0;
    background: #f8f9fa;
}

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

.service-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.15);
}

.service-icon {
    margin-bottom: 1.5rem;
}

.service-icon i {
    font-size: 3rem;
    color: #4a90c2;
}

.service-card h3 {
    color: #2c5aa0;
    margin-bottom: 1rem;
}

.service-card p {
    color: #666;
    line-height: 1.6;
}

.no-services {
    text-align: center;
    padding: 3rem;
    color: #666;
}

/* ===== About Section ===== */
.about-section {
    padding: 4rem 0;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-text h2 {
    color: #2c5aa0;
    text-align: center;
    margin-bottom: 2rem;
}

.about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    color: #555;
}

.contact-info {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid #eee;
}

.contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.contact-item i {
    color: #4a90c2;
    margin-right: 1rem;
    width: 20px;
    text-align: center;
}

/* ===== Form Sections ===== */
.appointment-section,
.contact-section {
    padding: 4rem 0;
}

.appointment-section {
    background: #f8f9fa;
}

.appointment-form,
.contact-form {
    max-width: 600px;
    margin: 0 auto;
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #333;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid #e9ecef;
    border-radius: 5px;
    font-size: 1rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #4a90c2;
    box-shadow: 0 0 0 3px rgba(74, 144, 194, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ===== Footer ===== */
.footer {
    background: #2c5aa0;
    color: white;
    padding: 3rem 0 1rem;
}

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

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: white;
}

.footer-section p,
.footer-section ul {
    margin-bottom: 0.5rem;
}

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

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

.footer-section a {
    color: #e3f2fd;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: white;
}

.footer-section i {
    margin-right: 0.5rem;
    width: 20px;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.2);
    color: #e3f2fd;
}

/* ===== Responsive Design ===== */

/* Tablet Styles */
@media (min-width: 768px) {
    .container {
        padding: 0 2rem;
    }
    
    /* Header */
    .nav-menu {
        display: flex;
    }
    
    .header-cta {
        display: block;
    }
    
    .mobile-menu-toggle {
        display: none;
    }
    
    .mobile-nav {
        display: none !important;
    }
    
    .admin-user-menu {
        display: flex;
    }
    
    /* Hero */
    .hero-title {
        font-size: 3rem;
    }
    
    .hero-subtitle {
        font-size: 1.3rem;
    }
    
    /* Services */
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* Forms */
    .form-row {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* Footer */
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Desktop Styles */
@media (min-width: 1024px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    h3 { font-size: 1.75rem; }
    
    .container {
        padding: 0 3rem;
    }
    
    /* Header */
    .header-content {
        padding: 1.5rem 0;
    }
    
    .nav-menu {
        gap: 3rem;
    }
    
    /* Hero */
    .hero-section {
        padding: 10rem 0 6rem;
    }
    
    .hero-title {
        font-size: 4rem;
    }
    
    .hero-subtitle {
        font-size: 1.4rem;
    }
    
    .hero-buttons {
        gap: 2rem;
    }
    
    /* Services */
    .services-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    /* Sections */
    .services-section,
    .about-section,
    .appointment-section,
    .contact-section {
        padding: 6rem 0;
    }
    
    /* Footer */
    .footer {
        padding: 4rem 0 2rem;
    }
    
    .footer-content {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Large Desktop */
@media (min-width: 1200px) {
    .services-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}