/*
 * DocConnect - Modern Healthcare Appointment Booking
 * 2025 Professional Medical Form Design
 * Modern, Accessible, and User-Friendly
 */

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

:root {
    /* Modern Color Palette for Healthcare */
    --primary-color: #2563eb;        /* Modern blue */
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary-color: #059669;      /* Healthcare green */
    --accent-color: #7c3aed;         /* Modern purple */
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    
    /* Neutral Colors */
    --white: #ffffff;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-display: 'Poppins', 'Inter', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Border radius */
    --border-radius-sm: 0.375rem;
    --border-radius-md: 0.5rem;
    --border-radius-lg: 0.75rem;
    --border-radius-xl: 1rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 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);
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;
}

/* Base Typography */
body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-700);
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--gray-100) 100%);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Main Wrapper */
.main-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 50%, var(--accent-color) 100%);
    color: var(--white);
    padding: var(--spacing-3xl) var(--spacing-md) var(--spacing-2xl);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../images/banner9.jpg') center/cover;
    opacity: 0.1;
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
}

.hero-header h1 {
    font-family: var(--font-display);
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    letter-spacing: -0.025em;
}

.hero-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
    animation: pulse 2s ease-in-out infinite;
}

.hero-subtitle {
    font-size: 1.25rem;
    font-weight: 400;
    opacity: 0.95;
    max-width: 600px;
    margin: 0 auto;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

/* Form Container */
.form-container {
    flex: 1;
    padding: var(--spacing-2xl) var(--spacing-md);
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

.form-card {
    background: var(--white);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-2xl);
    width: 100%;
    max-width: 800px;
    border: 1px solid var(--gray-200);
    transform: translateY(-2rem);
    margin-top: -2rem;
    position: relative;
    z-index: 10;
}

.form-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.form-header h2 {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.form-header h2 i {
    color: var(--primary-color);
    font-size: 1.75rem;
}

.form-header p {
    color: var(--gray-600);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Form Sections */
.form-section {
    margin-bottom: var(--spacing-2xl);
    padding: var(--spacing-xl);
    background: var(--gray-50);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--gray-200);
}

.form-section h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.form-section h3 i {
    color: var(--primary-color);
    font-size: 1.1rem;
}

/* Input Groups */
.input-group {
    margin-bottom: var(--spacing-lg);
}

.input-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.input-group label {
    display: block;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: var(--spacing-sm);
    font-size: 0.95rem;
}

.required {
    color: var(--error-color);
    margin-left: var(--spacing-xs);
}

/* Form Controls */
input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"],
select,
textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--gray-300);
    border-radius: var(--border-radius-md);
    font-size: 1rem;
    font-family: var(--font-primary);
    transition: all var(--transition-normal);
    background: var(--white);
    color: var(--gray-700);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="tel"]:focus,
input[type="number"]:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    transform: translateY(-1px);
}

input[type="text"]:hover,
input[type="email"]:hover,
input[type="tel"]:hover,
input[type="number"]:hover,
select:hover,
textarea:hover {
    border-color: var(--gray-400);
}

::placeholder {
    color: var(--gray-400);
    font-style: italic;
}

/* Date Input Group */
.date-input-group {
    display: grid;
    grid-template-columns: 1fr 2fr 1fr;
    gap: var(--spacing-md);
}

/* Checkbox Grid */
.checkbox-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.checkbox-item {
    display: flex;
    align-items: center;
    padding: var(--spacing-md);
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: var(--border-radius-md);
    transition: all var(--transition-normal);
    cursor: pointer;
    position: relative;
}

.checkbox-item:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-sm);
    transform: translateY(-1px);
}

.checkbox-item input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    width: 100%;
    height: 100%;
    margin: 0;
}

.checkbox-item label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    font-weight: 500;
    margin: 0;
    width: 100%;
    color: var(--gray-700);
}

.checkbox-item label i {
    color: var(--primary-color);
    font-size: 1.1rem;
}

.checkbox-item input[type="checkbox"]:checked + label {
    color: var(--primary-color);
}

.checkbox-item:has(input[type="checkbox"]:checked) {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
}

/* Custom Checkbox Styling */
.checkbox-item::before {
    content: '';
    width: 20px;
    height: 20px;
    border: 2px solid var(--gray-300);
    border-radius: var(--border-radius-sm);
    margin-right: var(--spacing-sm);
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.checkbox-item:has(input[type="checkbox"]:checked)::before {
    background: var(--primary-color);
    border-color: var(--primary-color);
    background-image: url("data:image/svg+xml,%3csvg viewBox='0 0 16 16' fill='white' xmlns='http://www.w3.org/2000/svg'%3e%3cpath d='m13.854 3.646-8.5 8.5-.708-.708L11.293 4.646l.708.708z'/%3e%3c/svg%3e");
    background-size: 12px;
    background-position: center;
    background-repeat: no-repeat;
}

/* Form Actions */
.form-actions {
    text-align: center;
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--gray-200);
}

.submit-btn {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--white);
    border: none;
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: var(--border-radius-lg);
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-family: var(--font-primary);
    min-width: 200px;
    justify-content: center;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--accent-color) 100%);
}

.submit-btn:active {
    transform: translateY(0);
    box-shadow: var(--shadow-md);
}

.form-note {
    margin-top: var(--spacing-lg);
    color: var(--gray-600);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.form-note i {
    color: var(--primary-color);
}

/* Footer */
.footer {
    background: var(--gray-800);
    color: var(--gray-300);
    padding: var(--spacing-xl) var(--spacing-md);
    text-align: center;
}

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

.footer-content p {
    margin-bottom: var(--spacing-md);
    font-size: 0.95rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--gray-400);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color var(--transition-normal);
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .hero-header h1 {
        font-size: 2.5rem;
    }
    
    .hero-icon {
        font-size: 3rem;
    }
    
    .form-card {
        margin: 0;
        transform: none;
        border-radius: var(--border-radius-lg);
        padding: var(--spacing-lg);
    }
    
    .form-section {
        padding: var(--spacing-lg);
    }
    
    .input-row {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .date-input-group {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    .checkbox-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    .submit-btn {
        width: 100%;
        padding: 1rem;
    }
    
    .footer-links {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    .hero-section {
        padding: var(--spacing-xl) var(--spacing-sm);
    }
    
    .hero-header h1 {
        font-size: 2rem;
    }
    
    .form-container {
        padding: var(--spacing-lg) var(--spacing-sm);
    }
    
    .form-card {
        padding: var(--spacing-md);
    }
    
    .form-section {
        padding: var(--spacing-md);
    }
    
    .form-header h2 {
        font-size: 1.5rem;
    }
    
    .checkbox-item {
        padding: var(--spacing-sm);
    }
}

/* Loading and Animation States */
.form-card {
    animation: slideUp 0.6s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(-2rem);
    }
}

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

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --gray-300: #666666;
        --gray-400: #555555;
        --gray-600: #333333;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Print styles */
@media print {
    .hero-section,
    .footer {
        display: none;
    }
    
    .form-card {
        box-shadow: none;
        border: 1px solid var(--gray-300);
    }
    
    .submit-btn {
        display: none;
    }
}