/* Enhanced Professional Forms - Ultimate User Experience */

/* ============================================
   1. ROOT VARIABLES & DESIGN SYSTEM
   ============================================ */
:root {
    /* Professional Color Palette */
    --primary-color: #0056b3;
    --primary-hover: #004494;
    --primary-light: #e6f2ff;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --success-light: #d4edda;
    --danger-color: #dc3545;
    --danger-light: #f8d7da;
    --warning-color: #ffc107;
    --warning-light: #fff3cd;
    --info-color: #17a2b8;
    --info-light: #d1ecf1;
    
    /* Neutral Colors */
    --text-primary: #2c3e50;
    --text-secondary: #6c757d;
    --text-muted: #a0a0a0;
    --border-color: #dee2e6;
    --border-light: #f1f3f5;
    --background-white: #ffffff;
    --background-light: #f8f9fa;
    --background-lighter: #fafbfc;
    
    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-base: 16px;
    --font-size-small: 14px;
    --font-size-large: 18px;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-pill: 50px;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
    --shadow-xl: 0 12px 48px rgba(0,0,0,0.16);
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
}

/* ============================================
   2. BASE STYLES & RESETS
   ============================================ */
* {
    box-sizing: border-box;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    color: var(--text-primary);
    line-height: 1.6;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
}

/* ============================================
   3. WIZARD CONTAINER & LAYOUT
   ============================================ */
.wizard-container {
    max-width: 1200px;
    margin: var(--spacing-xl) auto;
    padding: var(--spacing-xl);
    background: var(--background-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    position: relative;
    overflow: hidden;
}

.wizard-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--info-color), var(--success-color));
    animation: shimmer 2s ease-in-out infinite;
}

@keyframes shimmer {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* ============================================
   4. WIZARD HEADER & PROGRESS
   ============================================ */
.wizard-header {
    text-align: center;
    padding: var(--spacing-xxl) 0;
    margin-bottom: var(--spacing-xl);
    position: relative;
}

.document-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    color: white;
    box-shadow: var(--shadow-lg);
    animation: pulse 2s ease-in-out infinite;
}

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

.wizard-title {
    font-size: 2.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.5px;
}

.wizard-subtitle {
    font-size: var(--font-size-large);
    color: var(--text-secondary);
    font-weight: var(--font-weight-normal);
    max-width: 600px;
    margin: 0 auto;
}

/* Step Indicators - Always Horizontal */
.wizard-steps {
    display: flex !important;
    flex-direction: row !important;
    justify-content: space-between;
    align-items: center;
    margin: var(--spacing-xl) 0;
    padding: 0 var(--spacing-lg);
    position: relative;
}

.wizard-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex: 1;
    position: relative;
    min-width: 100px;
}

.wizard-step:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 20px;
    left: 50%;
    width: 100%;
    height: 2px;
    background: var(--border-color);
    z-index: -1;
}

.wizard-step.completed::after {
    background: var(--success-color);
}

.wizard-step-circle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--background-light);
    border: 2px solid var(--border-color);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-sm);
    transition: all var(--transition-base);
    position: relative;
    z-index: 1;
}

.wizard-step.active .wizard-step-circle {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
    box-shadow: 0 0 0 4px rgba(0, 86, 179, 0.1);
}

.wizard-step.completed .wizard-step-circle {
    background: var(--success-color);
    border-color: var(--success-color);
    color: white;
}

.wizard-step-label {
    font-size: var(--font-size-small);
    color: var(--text-secondary);
    text-align: center;
    font-weight: var(--font-weight-medium);
    white-space: nowrap;
}

.wizard-step.active .wizard-step-label {
    color: var(--primary-color);
    font-weight: var(--font-weight-semibold);
}

/* Enhanced Progress Bar */
.wizard-progress {
    background: var(--background-light);
    border-radius: var(--radius-pill);
    height: 12px;
    margin: var(--spacing-xl) 0;
    overflow: hidden;
    position: relative;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.06);
}

.wizard-progress-bar {
    background: linear-gradient(90deg, var(--primary-color), var(--primary-hover));
    height: 100%;
    border-radius: var(--radius-pill);
    transition: width var(--transition-slow);
    position: relative;
    overflow: hidden;
}

.wizard-progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.3),
        transparent
    );
    animation: progress-shine 2s ease-in-out infinite;
}

@keyframes progress-shine {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* Mobile Responsive Step Indicators */
@media (max-width: 768px) {
    .wizard-steps {
        padding: 0 var(--spacing-sm);
    }
    
    .wizard-step-label {
        font-size: 12px;
    }
    
    .wizard-step-circle {
        width: 35px;
        height: 35px;
        font-size: 14px;
    }
}

/* ============================================
   5. PROFESSIONAL FORM SECTIONS
   ============================================ */
.wizard-form-section {
    padding: var(--spacing-xl) 0;
    animation: fadeInUp var(--transition-slow) ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.wizard-form-section h3 {
    font-size: 1.75rem;
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-md);
    border-bottom: 3px solid var(--primary-color);
    position: relative;
}

.wizard-form-section h3 i {
    margin-right: var(--spacing-sm);
    color: var(--primary-color);
}

/* ============================================
   6. ENHANCED CARD DESIGN
   ============================================ */
.card {
    border: none;
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    overflow: hidden;
    background: var(--background-white);
}

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

.card-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    padding: var(--spacing-lg) var(--spacing-xl);
    color: white;
}

.card-header h5 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: var(--font-weight-semibold);
    color: white;
    display: flex;
    align-items: center;
}

.card-header h5 i {
    margin-right: var(--spacing-sm);
    font-size: 1.1rem;
}

.card-body {
    padding: var(--spacing-xl);
    background: var(--background-white);
}

/* ============================================
   7. PROFESSIONAL FORM CONTROLS
   ============================================ */
.form-group {
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    font-size: var(--font-size-base);
    transition: color var(--transition-fast);
}

.form-label.required-field::after {
    content: ' *';
    color: var(--danger-color);
    font-weight: var(--font-weight-bold);
}

/* Enhanced Form Controls */
.form-control,
.form-select {
    display: block;
    width: 100%;
    padding: 14px 18px;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: 1.5;
    color: var(--text-primary);
    background-color: var(--background-white);
    background-clip: padding-box;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    appearance: none;
}

.form-control-lg,
.form-select-lg {
    padding: 16px 20px;
    font-size: var(--font-size-large);
    border-radius: var(--radius-lg);
}

/* Focus States */
.form-control:focus,
.form-select:focus {
    color: var(--text-primary);
    background-color: var(--background-white);
    border-color: var(--primary-color);
    outline: 0;
    box-shadow: 0 0 0 4px rgba(0, 86, 179, 0.1);
}

/* Hover States */
.form-control:hover:not(:focus),
.form-select:hover:not(:focus) {
    border-color: var(--primary-light);
}

/* Placeholder Styling */
.form-control::placeholder {
    color: var(--text-muted);
    opacity: 0.7;
}

/* Textarea Specific */
textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

/* Select Dropdown Arrow */
.form-select {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 16px 12px;
    padding-right: 40px;
}

/* ============================================
   8. CHECKBOXES & RADIO BUTTONS
   ============================================ */
.form-check {
    padding-left: 0;
    margin-bottom: var(--spacing-md);
}

.form-check-input {
    width: 20px;
    height: 20px;
    margin-right: var(--spacing-sm);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    cursor: pointer;
    vertical-align: middle;
}

.form-check-input[type="radio"] {
    border-radius: 50%;
}

.form-check-input:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.form-check-input:focus {
    box-shadow: 0 0 0 4px rgba(0, 86, 179, 0.1);
}

.form-check-label {
    cursor: pointer;
    font-size: var(--font-size-base);
    color: var(--text-primary);
    padding-left: var(--spacing-sm);
    line-height: 20px;
}

/* ============================================
   9. HELP TEXT & TOOLTIPS
   ============================================ */
.form-text {
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-small);
    color: var(--text-secondary);
    line-height: 1.4;
    display: flex;
    align-items: center;
}

.form-text::before {
    content: '💡';
    margin-right: var(--spacing-xs);
    font-size: 12px;
}

/* Tooltip Container */
.tooltip-container {
    position: relative;
    display: inline-block;
    margin-left: var(--spacing-xs);
    cursor: help;
}

.tooltip-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-left: 8px;
    color: var(--info-color);
    font-size: 14px;
    cursor: help;
    transition: color var(--transition-fast);
}

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

.tooltip-content {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--text-primary);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: var(--font-size-small);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    z-index: 1000;
    pointer-events: none;
}

.tooltip-container:hover .tooltip-content {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(-8px);
}

/* ============================================
   10. NAVIGATION BUTTONS
   ============================================ */
.wizard-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--spacing-xxl);
    padding-top: var(--spacing-xl);
    border-top: 2px solid var(--border-light);
}

.btn {
    padding: 14px 32px;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-pill);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 140px;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:active::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: white;
    box-shadow: 0 4px 15px rgba(0, 86, 179, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 86, 179, 0.4);
}

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

.btn-secondary:hover {
    background: var(--background-lighter);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.btn-success {
    background: linear-gradient(135deg, var(--success-color), #218838);
    color: white;
    box-shadow: 0 4px 15px rgba(40, 167, 69, 0.3);
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(40, 167, 69, 0.4);
}

.btn i {
    font-size: 18px;
    margin: 0 var(--spacing-xs);
}

/* ============================================
   11. VALIDATION & ERROR STATES
   ============================================ */
.form-control.is-invalid,
.form-select.is-invalid {
    border-color: var(--danger-color);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' width='12' height='12' fill='none' stroke='%23dc3545'%3e%3ccircle cx='6' cy='6' r='4.5'/%3e%3cpath stroke-linejoin='round' d='M5.8 3.6h.4L6 6.5z'/%3e%3ccircle cx='6' cy='8.2' r='.6' fill='%23dc3545' stroke='none'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(0.375em + 0.1875rem) center;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
    padding-right: calc(1.5em + 0.75rem);
}

.form-control.is-invalid:focus,
.form-select.is-invalid:focus {
    border-color: var(--danger-color);
    box-shadow: 0 0 0 4px rgba(220, 53, 69, 0.1);
}

.invalid-feedback {
    display: none;
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-small);
    color: var(--danger-color);
    animation: shake 0.3s ease-in-out;
}

.form-control.is-invalid ~ .invalid-feedback,
.form-select.is-invalid ~ .invalid-feedback {
    display: block;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

/* Success State */
.form-control.is-valid,
.form-select.is-valid {
    border-color: var(--success-color);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3e%3cpath fill='%2328a745' d='M2.3 6.73L.6 4.53c-.4-1.04.46-1.4 1.1-.8l1.1 1.4 3.4-3.8c.6-.63 1.6-.27 1.2.7l-4 4.6c-.43.5-.8.4-1.1.1z'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(0.375em + 0.1875rem) center;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
    padding-right: calc(1.5em + 0.75rem);
}

/* ============================================
   12. FEATURE CARDS & BENEFITS
   ============================================ */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

.feature-card {
    background: var(--background-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--info-color));
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

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

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-md);
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: white;
}

.feature-card h5 {
    font-size: var(--font-size-large);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.feature-card p {
    font-size: var(--font-size-small);
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ============================================
   13. RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 768px) {
    .wizard-container {
        margin: var(--spacing-md);
        padding: var(--spacing-lg);
        border-radius: var(--radius-lg);
    }
    
    .wizard-title {
        font-size: 1.8rem;
    }
    
    .wizard-subtitle {
        font-size: var(--font-size-base);
    }
    
    .row {
        margin-left: calc(var(--spacing-sm) * -1);
        margin-right: calc(var(--spacing-sm) * -1);
    }
    
    .col-md-6, .col-md-4, .col-md-3 {
        flex: 0 0 100%;
        max-width: 100%;
        padding-left: var(--spacing-sm);
        padding-right: var(--spacing-sm);
    }
    
    .wizard-navigation {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .btn {
        width: 100%;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .wizard-container {
        margin: var(--spacing-sm);
        padding: var(--spacing-md);
    }
    
    .wizard-title {
        font-size: 1.5rem;
    }
    
    .document-icon {
        width: 60px;
        height: 60px;
        font-size: 28px;
    }
}

/* ============================================
   14. LOADING STATES & ANIMATIONS
   ============================================ */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--border-color);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ============================================
   15. ACCESSIBILITY IMPROVEMENTS
   ============================================ */
.visually-hidden, .sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Autosave Notification */
.autosave-notification {
    background: var(--success-light);
    border: 1px solid var(--success-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) var(--spacing-md);
    margin-top: var(--spacing-md);
    animation: fadeIn var(--transition-base);
}

.autosave-notification .btn-link {
    padding: 0;
    margin-left: var(--spacing-sm);
    font-size: var(--font-size-small);
    text-decoration: underline;
}

/* Focus Visible for Keyboard Navigation */
*:focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    .form-control,
    .form-select {
        border-width: 3px;
    }
    
    .btn {
        border: 2px solid currentColor;
    }
}

/* 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 {
    .wizard-navigation,
    .wizard-progress,
    .tooltip-container {
        display: none;
    }
    
    .wizard-container {
        box-shadow: none;
        border: 1px solid #000;
    }
}