/* ===========================================
   TRUCK PRICING - MODERN UI DESIGN
   Clean, Professional, Contemporary
   =========================================== */

/* CSS Custom Properties */
:root {
    --primary: #0ea5e9;
    --primary-dark: #0284c7;
    --primary-light: #38bdf8;
    --accent: #06b6d4;

    --slate-50: #f8fafc;
    --slate-100: #f1f5f9;
    --slate-200: #e2e8f0;
    --slate-300: #cbd5e1;
    --slate-400: #94a3b8;
    --slate-500: #64748b;
    --slate-600: #475569;
    --slate-700: #334155;
    --slate-800: #1e293b;
    --slate-900: #0f172a;

    --success: #10b981;
    --success-light: #d1fae5;

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===========================================
   HEADER - Modern Dark Theme
   =========================================== */
.site-header {
    background: linear-gradient(135deg, var(--slate-900) 0%, var(--slate-800) 100%);
    padding: 0;
    box-shadow: var(--shadow-lg);
    position: sticky;
    top: 0;
    z-index: 100;
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
}

.site-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: #fff;
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.025em;
    transition: opacity var(--transition-fast);
}

.site-logo:hover {
    opacity: 0.9;
    text-decoration: none;
}

.site-logo i {
    color: var(--primary);
    font-size: 1.5rem;
    filter: drop-shadow(0 0 8px rgba(14, 165, 233, 0.4));
}

/* Header User Menu */
.user-menu {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.user-name {
    color: var(--slate-300);
    font-size: 0.875rem;
    font-weight: 500;
}

.admin-link, .logout-link {
    color: var(--slate-300);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.admin-link:hover, .logout-link:hover {
    color: #fff;
    background: var(--slate-700);
    text-decoration: none;
}

.admin-link i, .logout-link i {
    margin-right: 0.375rem;
}

/* ===========================================
   FOOTER - Clean Dark
   =========================================== */
.site-footer {
    background: var(--slate-900);
    color: var(--slate-400);
    padding: 2.5rem 0;
    margin-top: auto;
}

.site-footer p {
    margin: 0;
    text-align: center;
    font-size: 0.875rem;
}

/* ===========================================
   TRUCK PRICING - Main Content
   =========================================== */
.truck-pricing-page {
    padding: 3rem 0;
    min-height: calc(100vh - 80px);
    background: var(--slate-50);
}

.truck-pricing-page .container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.truck-pricing-page h1 {
    text-align: center;
    margin-bottom: 0.75rem;
    color: var(--slate-800);
    font-size: 2.25rem;
    font-weight: 800;
    letter-spacing: -0.025em;
}

.truck-intro-text {
    text-align: center;
    color: var(--slate-500);
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    font-size: 1.125rem;
    line-height: 1.75;
}

/* ===========================================
   BRAND CARDS - Index Page
   =========================================== */
.truck-brands-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

@media (max-width: 1024px) {
    .truck-brands-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .truck-brands-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
}

@media (max-width: 480px) {
    .truck-brands-grid {
        grid-template-columns: 1fr;
    }
}

.truck-brand-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem 1.5rem;
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--slate-200);
    text-decoration: none;
    color: inherit;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.truck-brand-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.truck-brand-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-light);
    text-decoration: none;
}

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

.truck-brand-card:focus,
.truck-brand-card:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.4);
    transform: translateY(-6px);
}

.truck-brand-logo {
    width: 100%;
    max-width: 140px;
    height: 90px;
    object-fit: contain;
    margin-bottom: 1.25rem;
    filter: grayscale(20%);
    transition: filter var(--transition-normal);
}

.truck-brand-card:hover .truck-brand-logo {
    filter: grayscale(0%);
}

.truck-brand-logo-placeholder {
    width: 140px;
    height: 90px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--slate-100), var(--slate-50));
    border-radius: var(--radius-md);
    margin-bottom: 1.25rem;
}

.truck-brand-logo-placeholder i {
    font-size: 2.5rem;
    color: var(--slate-400);
}

.truck-brand-name {
    font-weight: 600;
    text-align: center;
    color: var(--slate-700);
    font-size: 1rem;
}

.truck-no-brands {
    grid-column: 1 / -1;
    text-align: center;
    padding: 4rem 2rem;
    color: var(--slate-500);
    background: #fff;
    border-radius: var(--radius-lg);
    border: 2px dashed var(--slate-300);
}

/* ===========================================
   BREADCRUMB - Navigation Path
   =========================================== */
.truck-breadcrumb {
    margin-bottom: 2rem;
}

.truck-breadcrumb ol {
    display: flex;
    flex-wrap: wrap;
    list-style: none;
    padding: 0.75rem 1rem;
    margin: 0;
    gap: 0.5rem;
    background: #fff;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--slate-200);
}

.truck-breadcrumb li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.truck-breadcrumb a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.truck-breadcrumb a:hover {
    color: var(--primary-dark);
    text-decoration: none;
}

.truck-breadcrumb a:focus,
.truck-breadcrumb a:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    border-radius: 2px;
}

.truck-breadcrumb-separator {
    color: var(--slate-400);
    font-size: 0.75rem;
}

/* ===========================================
   BRAND PAGE - Header & Models
   =========================================== */
.truck-brand-header {
    text-align: center;
    margin-bottom: 3rem;
    padding: 2rem;
    background: #fff;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--slate-200);
}

.truck-brand-header-logo {
    max-width: 180px;
    height: auto;
    margin-bottom: 1.5rem;
}

.truck-brand-header h1 {
    margin-bottom: 0.5rem;
}

.truck-brand-count {
    color: var(--slate-500);
    font-size: 1rem;
}

.truck-models-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
}

.truck-model-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 1.5rem;
    background: #fff;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--slate-200);
    text-decoration: none;
    color: inherit;
    transition: all var(--transition-normal);
}

.truck-model-card:hover {
    transform: translateX(6px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-light);
    text-decoration: none;
}

.truck-model-card:focus,
.truck-model-card:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.4);
    transform: translateX(6px);
}

.truck-model-card i {
    color: var(--primary);
    transition: transform var(--transition-fast);
}

.truck-model-card:hover i {
    transform: translateX(4px);
}

.truck-model-name {
    font-weight: 600;
    color: var(--slate-700);
}

.truck-no-models {
    grid-column: 1 / -1;
    text-align: center;
    padding: 3rem 2rem;
    color: var(--slate-500);
    background: #fff;
    border-radius: var(--radius-lg);
    border: 2px dashed var(--slate-300);
}

/* ===========================================
   MODEL PAGE - Engine List
   =========================================== */
.truck-year-section {
    margin-bottom: 2.5rem;
}

.truck-year-section h2 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 1rem;
    padding: 0.75rem 1rem;
    background: linear-gradient(90deg, var(--slate-800), var(--slate-700));
    color: #fff;
    border-radius: var(--radius-md);
    display: inline-block;
}

.truck-engines-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.truck-engine-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 1.5rem;
    background: #fff;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--slate-200);
    text-decoration: none;
    color: inherit;
    transition: all var(--transition-normal);
}

.truck-engine-card:hover {
    background: var(--slate-50);
    border-color: var(--primary-light);
    text-decoration: none;
}

.truck-engine-card:focus,
.truck-engine-card:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.4);
    background: var(--slate-50);
}

.truck-engine-card i {
    color: var(--primary);
    transition: transform var(--transition-fast);
}

.truck-engine-card:hover i {
    transform: translateX(4px);
}

.truck-engine-info {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.truck-engine-name {
    font-weight: 600;
    color: var(--slate-700);
}

.truck-engine-specs {
    font-size: 0.875rem;
    color: var(--slate-500);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.truck-engine-specs .gain {
    color: var(--success);
    font-weight: 600;
}

.truck-no-engines {
    text-align: center;
    padding: 3rem 2rem;
    color: var(--slate-500);
    background: #fff;
    border-radius: var(--radius-lg);
    border: 2px dashed var(--slate-300);
}

/* ===========================================
   ENGINE DETAIL PAGE - Specs & Pricing
   =========================================== */
.truck-engine-page h1 {
    margin-bottom: 0.5rem;
}

.truck-engine-year {
    color: var(--slate-500);
    margin-bottom: 2.5rem;
    font-size: 1rem;
}

.truck-specs-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

@media (max-width: 992px) {
    .truck-specs-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .truck-specs-grid {
        grid-template-columns: 1fr;
    }
}

.truck-specs-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--slate-200);
}

.truck-specs-card h2 {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.25rem;
    color: var(--slate-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.truck-specs-card dl {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 0.75rem;
    margin: 0;
}

.truck-specs-card dt {
    color: var(--slate-600);
    font-size: 0.9375rem;
}

.truck-specs-card dd {
    font-weight: 700;
    text-align: right;
    margin: 0;
    color: var(--slate-800);
    font-size: 1.125rem;
}

.truck-specs-gain {
    background: linear-gradient(135deg, #ecfdf5, #d1fae5);
    border-color: #a7f3d0;
}

.truck-specs-gain h2 {
    color: #059669;
}

.truck-gain-value {
    color: #059669 !important;
}

.truck-specs-final {
    background: linear-gradient(135deg, #eff6ff, #dbeafe);
    border-color: #93c5fd;
}

.truck-specs-final h2 {
    color: #2563eb;
}

.truck-specs-final dd {
    color: #1d4ed8 !important;
}

/* Pricing Cards */
.truck-prices-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

@media (max-width: 640px) {
    .truck-prices-grid {
        grid-template-columns: 1fr;
    }
}

.truck-price-card {
    background: linear-gradient(135deg, var(--slate-800) 0%, var(--slate-900) 100%);
    color: #fff;
    border-radius: var(--radius-xl);
    padding: 2rem;
    text-align: center;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.truck-price-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
}

.truck-price-card h3 {
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.75rem;
    color: var(--slate-400);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.truck-price-value {
    font-size: 2.5rem;
    font-weight: 800;
    margin: 0;
    background: linear-gradient(135deg, #fff, var(--slate-200));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===========================================
   LOGIN PAGE STYLES
   =========================================== */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    background: linear-gradient(135deg, var(--slate-100) 0%, var(--slate-200) 100%);
}

.login-box {
    width: 100%;
    max-width: 420px;
    background: #fff;
    border-radius: var(--radius-xl);
    padding: 3rem;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--slate-200);
}

.login-box h1 {
    text-align: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--slate-800);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.login-box h1 i {
    color: var(--primary);
}

.login-box h2 {
    text-align: center;
    font-size: 1rem;
    font-weight: 500;
    color: var(--slate-500);
    margin-bottom: 2rem;
}

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

.login-box label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--slate-700);
    margin-bottom: 0.5rem;
}

.login-box input[type="email"],
.login-box input[type="password"] {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 1px solid var(--slate-300);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: all var(--transition-fast);
    background: #fff;
}

.login-box input[type="email"]:focus,
.login-box input[type="password"]:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.2);
}

.login-box .btn-login {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
}

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

.login-box .btn-login:active {
    transform: translateY(0);
}

.login-box .alert-danger {
    padding: 1rem;
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #dc2626;
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
}

/* ===========================================
   MOBILE RESPONSIVE
   =========================================== */
@media (max-width: 768px) {
    .truck-pricing-page {
        padding: 2rem 0;
    }

    .truck-pricing-page h1 {
        font-size: 1.75rem;
    }

    .truck-intro-text {
        font-size: 1rem;
        margin-bottom: 2rem;
    }

    .site-header .container {
        padding: 0.875rem 1rem;
    }

    .site-logo {
        font-size: 1.125rem;
    }

    .user-menu {
        gap: 0.75rem;
    }

    .user-name {
        display: none;
    }

    .admin-link span,
    .logout-link span {
        display: none;
    }

    .truck-brand-card {
        padding: 1.5rem 1rem;
    }

    .truck-brand-header {
        padding: 1.5rem;
    }

    .login-box {
        padding: 2rem;
    }
}

/* ===========================================
   ANIMATIONS
   =========================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.truck-brands-grid,
.truck-models-grid,
.truck-engines-list {
    animation: fadeIn 0.4s ease-out;
}