/* ==========================================================================
   AMC Quote Form - Reorganized CSS Structure
   ========================================================================== */

/* ==========================================================================
   1. GLOBAL STYLES & VARIABLES
   ========================================================================== */
:root {
    /* Color System */
    --primary-color: #0d6efd;
    --primary-hover: #0b5ed7;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --light-bg: #f8f9fa;
    --border-color: #dee2e6;
    --text-color: #212529;
    --text-muted: #6c757d;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    
    /* Border Radius */
    --border-radius-sm: 0.25rem;
    --border-radius-md: 0.375rem;
    --border-radius-lg: 0.5rem;
    
    /* Shadows */
    --shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --shadow-md: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.175);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

* {
    box-sizing: border-box;
}

body {
    background-color: var(--light-bg);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    padding: var(--spacing-xl) var(--spacing-md);
}

/* ==========================================================================
   2. LOGO COMPONENT
   ========================================================================== */
.logo-container {
    margin-bottom: 0;
    padding: 0;
    position: relative;
    flex-shrink: 0;
}

.logo-img {
    height: 60px;
    width: auto;
    max-width: 100%;
    object-fit: contain;
    transition: all var(--transition-normal) cubic-bezier(0.4, 0, 0.2, 1);
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
    border-radius: var(--border-radius-sm);
}

.logo-img:hover {
    transform: scale(1.08) translateY(-2px);
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.15));
}

.logo-img:active {
    transform: scale(0.98);
}

.logo-img:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.logo-img.loading {
    opacity: 0.7;
    filter: grayscale(0.3);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 0.7;
    }
    50% {
        opacity: 0.9;
    }
}

/* Logo and title container */
.d-flex.align-items-center.justify-content-center {
    margin-bottom: var(--spacing-xl);
}

@media (max-width: 768px) {
    .logo-img {
        height: 45px;
    }
    
    .logo-img:hover {
        transform: scale(1.05) translateY(-1px);
    }
    
    .d-flex.align-items-center.justify-content-center {
        margin-bottom: var(--spacing-lg);
        flex-direction: column;
        text-align: center;
    }
    
    .logo-container {
        margin-bottom: var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    .logo-img {
        height: 40px;
    }
    
    .d-flex.align-items-center.justify-content-center {
        margin-bottom: var(--spacing-md);
    }
    
    h1 {
        font-size: 1.75rem;
    }
}

/* ==========================================================================
   3. FORM COMPONENTS
   ========================================================================== */
.form-section {
    margin-bottom: var(--spacing-xl);
}

.form-title {
    color: var(--primary-color);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--text-color);
}

.form-label.required::after {
    content: " *";
    color: var(--danger-color);
}

.form-control,
.form-select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    transition: all var(--transition-fast);
    background-color: white;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
    outline: none;
}

.form-control.is-invalid,
.form-select.is-invalid {
    border-color: var(--danger-color);
    box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25);
}

.form-check {
    margin-bottom: var(--spacing-xs);
}

.form-check-input {
    margin-right: var(--spacing-xs);
}

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

.form-check-label {
    margin-bottom: 0;
    font-weight: normal;
}

/* ==========================================================================
   4. BUTTON COMPONENTS
   ========================================================================== */
.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    border-radius: var(--border-radius-md);
    transition: all var(--transition-fast);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.btn-primary:disabled {
    opacity: 0.65;
    pointer-events: none;
}

/* ==========================================================================
   5. CARD COMPONENTS
   ========================================================================== */
.card {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    background-color: white;
    margin-bottom: var(--spacing-lg);
}

.card-header {
    background-color: var(--primary-color);
    color: white;
    font-weight: 600;
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
}

.card-body {
    padding: var(--spacing-md);
}

.card-title {
    margin-bottom: var(--spacing-md);
    color: var(--text-color);
    font-weight: 600;
}

.price-summary {
    position: sticky;
    top: 20px;
}

.price-summary__item {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
    padding-bottom: var(--spacing-xs);
    border-bottom: 1px solid var(--border-color);
}

.price-summary__item:last-child {
    border-bottom: none;
}

.price-summary__total {
    font-weight: 700;
    font-size: 1.1em;
    color: var(--primary-color);
}

/* ==========================================================================
   6. ALERT & NOTIFICATION SYSTEM
   ========================================================================== */
.alert {
    margin-bottom: var(--spacing-sm);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    border: 1px solid transparent;
}

.alert-success {
    color: #0f5132;
    background-color: #d1e7dd;
    border-color: #badbcc;
}

.alert-danger {
    color: #842029;
    background-color: #f8d7da;
    border-color: #f5c2c7;
}

.alert-warning {
    color: #664d03;
    background-color: #fff3cd;
    border-color: #ffecb5;
}

.alert-dismissible {
    padding-right: 3rem;
}

.alert-container {
    margin-top: var(--spacing-md);
}

/* ==========================================================================
   7. UTILITY CLASSES & ANIMATIONS
   ========================================================================== */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.spinner-border {
    width: 1rem;
    height: 1rem;
    border-width: 0.15em;
}

.spinner-border-sm {
    width: 0.8rem;
    height: 0.8rem;
}

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

.text-muted {
    color: var(--text-muted);
}

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

/* ==========================================================================
   8. RESPONSIVE DESIGN
   ========================================================================== */
@media (max-width: 1200px) {
    .container {
        max-width: 1140px;
    }
}

@media (max-width: 992px) {
    .container {
        max-width: 960px;
        padding: var(--spacing-lg) var(--spacing-sm);
    }
    
    .price-summary {
        position: static;
        margin-top: var(--spacing-xl);
    }
}

@media (max-width: 768px) {
    .container {
        padding: var(--spacing-md);
    }
    
    .form-title {
        font-size: 1.75rem;
        margin-bottom: var(--spacing-md);
    }
    
    .card {
        margin-bottom: var(--spacing-md);
    }
}

@media (max-width: 576px) {
    .container {
        padding: var(--spacing-sm);
    }
    
    .form-title {
        font-size: 1.5rem;
    }
    
    .btn-primary {
        padding: 0.625rem 1.25rem;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .form-control,
    .form-select {
        padding: 0.625rem;
    }
}

/* Print Styles */
@media print {
    .btn-primary,
    .alert {
        display: none;
    }
    
    body {
        background-color: white;
    }
    
    .container {
        padding: 0;
    }
}