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

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 1rem;
}

/* Container */
.container {
    max-width: 800px;
    margin: 0 auto;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

/* Header */
.form-header {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: white;
    padding: 2rem;
    text-align: center;
}

.form-header h1 {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.form-header p {
    opacity: 0.9;
    font-size: 0.95rem;
}

/* Form Styles */
.form-content {
    padding: 2rem;
}

.form-section {
    margin-bottom: 2.5rem;
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 8px;
    border-left: 4px solid #667eea;
}

.section-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.section-title::before {
    content: '';
    width: 20px;
    height: 20px;
    background: #667eea;
    border-radius: 50%;
    flex-shrink: 0;
}

/* Form Groups */
.form-group {
    margin-bottom: 1.5rem;
}

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

@media (min-width: 768px) {
    .form-row.two-col {
        grid-template-columns: 1fr 1fr;
    }
    
    .form-row.three-col {
        grid-template-columns: 1fr 1fr 1fr;
    }
}

/* Labels */
label {
    display: block;
    font-weight: 500;
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.required::after {
    content: ' *';
    color: #e74c3c;
}

/* Input Styles */
input[type="text"],
input[type="email"],
input[type="tel"],
input[type="date"],
input[type="number"],
textarea,
select {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid #e1e8ed;
    border-radius: 6px;
    font-size: 0.95rem;
    font-family: inherit;
    transition: all 0.3s ease;
    background: #fff;
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

input:invalid {
    border-color: #e74c3c;
}

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

/* File Upload */
.file-upload {
    position: relative;
    display: inline-block;
    width: 100%;
}

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

.file-upload-label {
    display: block;
    padding: 1rem;
    border: 2px dashed #667eea;
    border-radius: 6px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: #f8f9fa;
}

.file-upload-label:hover {
    background: #e9ecef;
    border-color: #5a67d8;
}

.file-upload-text {
    color: #667eea;
    font-weight: 500;
}

.file-upload input[type="file"]:focus + .file-upload-label {
    border-color: #5a67d8;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

/* File Preview Styles */
.file-preview {
    margin-top: 10px;
    padding: 10px;
    background: #f8f9fa;
    border-radius: 6px;
    border: 1px solid #e1e8ed;
    text-align: center;
}

.file-preview img {
    border: 2px solid #e1e8ed;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.file-preview p {
    margin: 0;
    word-break: break-all;
}

/* Select Styling */
select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 0.5rem center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
    padding-right: 2.5rem;
}

/* Button Styles */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 6px;
    font-size: 0.95rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
}

.btn-block {
    width: 100%;
    display: block;
}

/* Form Actions */
.form-actions {
    padding: 2rem;
    background: #f8f9fa;
    border-top: 1px solid #e1e8ed;
}

/* Error Messages */
.error-message {
    color: #e74c3c;
    font-size: 0.85rem;
    margin-top: 0.25rem;
    display: none;
    background: #fdf2f2;
    padding: 0.5rem;
    border-radius: 4px;
    border-left: 3px solid #e74c3c;
}

.form-group.error input,
.form-group.error textarea,
.form-group.error select {
    border-color: #e74c3c;
    background-color: #fdf2f2;
}

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

/* Success Message */
.success-message {
    background: #d4edda;
    color: #155724;
    padding: 1rem;
    border-radius: 6px;
    margin-bottom: 1rem;
    border: 1px solid #c3e6cb;
}

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

.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-right: 0.5rem;
}

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

/* Mobile Responsive */
@media (max-width: 767px) {
    body {
        padding: 0.5rem;
    }
    
    .form-header {
        padding: 1.5rem 1rem;
    }
    
    .form-header h1 {
        font-size: 1.5rem;
    }
    
    .form-content {
        padding: 1.5rem 1rem;
    }
    
    .form-section {
        padding: 1rem;
        margin-bottom: 1.5rem;
    }
    
    .section-title {
        font-size: 1.1rem;
    }
    
    .form-actions {
        padding: 1.5rem 1rem;
    }
}

/* Print Styles */
@media print {
    body {
        background: white;
        padding: 0;
    }
    
    .container {
        box-shadow: none;
        border-radius: 0;
    }
    
    .btn {
        display: none;
    }
}

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

/* Focus visible for keyboard navigation */
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
button:focus-visible {
    outline: 2px solid #667eea;
    outline-offset: 2px;
}