/* ========================================
   Global Styles
   ======================================== */
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --accent: #f59e0b;
    --accent-dark: #d97706;
    --dark: #0f172a;
    --dark-light: #1e293b;
    --gray-900: #111827;
    --gray-800: #1f2937;
    --gray-700: #374151;
    --gray-600: #4b5563;
    --gray-500: #6b7280;
    --gray-400: #9ca3af;
    --gray-300: #d1d5db;
    --gray-200: #e5e7eb;
    --gray-100: #f3f4f6;
    --gray-50: #f9fafb;
    --white: #ffffff;
    --success: #10b981;
    --error: #ef4444;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --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);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    --radius-sm: 0.25rem;
    --radius: 0.5rem;
    --radius-md: 0.625rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--gray-900);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }
h4 { font-size: 1.125rem; }

p {
    color: var(--gray-600);
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius);
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    border-color: var(--primary);
}

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

.btn-outline {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: var(--white);
    transform: translateY(-2px);
}

.btn-glass {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    color: var(--white);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-glass:hover {
    background: rgba(255, 255, 255, 0.2);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.8125rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1rem;
}

.btn-block {
    width: 100%;
}

/* ========================================
   Navigation
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    font-size: 1.75rem;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--gray-600);
    padding: 0.5rem 0;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 0.5rem;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--gray-700);
    transition: var(--transition);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--white);
    padding: 2rem;
    z-index: 999;
}

.mobile-menu.active {
    display: block;
}

.mobile-nav-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.mobile-nav-links a {
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--gray-700);
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--gray-200);
}

.mobile-nav-links a.active {
    color: var(--primary);
}

.mobile-nav-actions {
    margin-top: 2rem;
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 50%, var(--gray-100) 100%);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(37, 99, 235, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(245, 158, 11, 0.05) 0%, transparent 50%);
}

.hero-content {
    position: relative;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
}

.hero h1 {
    margin-bottom: 1.5rem;
}

.text-gradient {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 1.125rem;
    line-height: 1.8;
    margin-bottom: 2rem;
    max-width: 540px;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
}

.stat-suffix {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    display: block;
    font-size: 0.875rem;
    color: var(--gray-500);
    margin-top: 0.5rem;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--gray-300);
}

.hero-visual {
    position: relative;
}

.hero-engine-display {
    position: relative;
    width: 100%;
    aspect-ratio: 1;
    max-width: 400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--white) 100%);
    border-radius: 50%;
    box-shadow: var(--shadow-2xl);
}

.engine-glow {
    position: absolute;
    inset: -20px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.2) 0%, transparent 70%);
    border-radius: 50%;
    animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

.hero-engine-img {
    max-height: 70%;
    max-width: 70%;
    object-fit: contain;
    position: relative;
    z-index: 1;
}

.engine-label {
    position: absolute;
    bottom: 20%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: var(--white);
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
}

.floating-cards {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

.floating-card {
    position: absolute;
    background: var(--white);
    padding: 1rem 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    animation: float 3s ease-in-out infinite;
}

.floating-card.card-1 {
    top: 10%;
    right: -10%;
    animation-delay: 0s;
}

.floating-card.card-2 {
    bottom: 30%;
    left: -15%;
    animation-delay: 0.5s;
}

.floating-card.card-3 {
    bottom: 10%;
    right: -5%;
    animation-delay: 1s;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

.card-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.card-text {
    font-size: 0.75rem;
    color: var(--gray-500);
}

/* ========================================
   Section Styles
   ======================================== */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border-radius: 50px;
    margin-bottom: 1rem;
}

.section-header h2 {
    margin-bottom: 1rem;
}

.section-desc {
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto;
}

.section-footer {
    text-align: center;
    margin-top: 3rem;
}

.footer-note {
    font-size: 0.875rem;
    color: var(--gray-500);
    padding: 1rem;
    background: var(--gray-50);
    border-radius: var(--radius);
}

/* ========================================
   Products Section
   ======================================== */
.products {
    background: var(--white);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.product-card {
    position: relative;
    background: var(--white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--gray-200);
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.product-card.featured {
    border: 2px solid var(--primary);
}

.product-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 50px;
    background: var(--gray-600);
    color: var(--white);
    z-index: 10;
}

.product-badge.popular {
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
}

.product-badge.new {
    background: linear-gradient(135deg, var(--success) 0%, #059669 100%);
}

.product-visual {
    height: 180px;
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--gray-50) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem;
    overflow: hidden;
}

.product-engine-img {
    max-height: 160px;
    max-width: 85%;
    object-fit: contain;
    transition: var(--transition);
}

.product-card:hover .product-engine-img {
    transform: scale(1.05);
}

.product-content {
    padding: 1.5rem;
}

.product-name {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.product-intro {
    font-size: 0.875rem;
    color: var(--gray-600);
    margin-bottom: 1.5rem;
}

.product-specs {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.spec-item {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    border-bottom: 1px dashed var(--gray-200);
}

.spec-label {
    font-size: 0.875rem;
    color: var(--gray-500);
}

.spec-value {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-800);
}

.spec-value.highlight {
    color: var(--primary);
    font-weight: 600;
}

/* ========================================
   Features Section
   ======================================== */
.features {
    background: var(--gray-50);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.feature-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--radius-xl);
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

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

.feature-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: 50%;
    margin-bottom: 1.5rem;
    color: var(--white);
}

.feature-card h3 {
    margin-bottom: 0.75rem;
}

.feature-card p {
    font-size: 0.9375rem;
}

/* ========================================
   Applications Section
   ======================================== */
.applications {
    background: linear-gradient(135deg, var(--gray-900) 0%, var(--dark-light) 100%);
    color: var(--white);
}

.applications .section-header.light h2,
.applications .section-header.light p {
    color: var(--white);
}

.applications .section-header.light .section-desc {
    color: var(--gray-400);
}

.app-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.app-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: var(--radius-xl);
    text-align: center;
    transition: var(--transition);
}

.app-card:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-5px);
}

.app-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.app-card h3 {
    color: var(--white);
    margin-bottom: 0.5rem;
}

.app-card p {
    font-size: 0.875rem;
    color: var(--gray-400);
}

/* ========================================
   Real-World Cases Section
   ======================================== */
.cases {
    background: var(--white);
    padding: 100px 0;
}

.cases-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
}

.case-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    background: var(--white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
}

.case-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-2xl);
}

.case-card:nth-child(even) .case-image {
    order: 2;
}

.case-card:nth-child(even) .case-content {
    order: 1;
}

.case-image {
    position: relative;
    overflow: hidden;
    min-height: 320px;
}

.case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.case-card:hover .case-image img {
    transform: scale(1.05);
}

.case-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 1rem 1.5rem;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
}

.case-category {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--primary);
    color: var(--white);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 50px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.case-content {
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.case-content h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--gray-900);
}

.case-content p {
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--gray-600);
    margin-bottom: 1.5rem;
}

.case-stats {
    display: flex;
    gap: 2rem;
    margin-bottom: 1.5rem;
    padding: 1.25rem;
    background: var(--gray-50);
    border-radius: var(--radius-lg);
}

.case-stat {
    text-align: center;
    flex: 1;
}

.case-stat-number {
    display: block;
    font-size: 1.375rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1.2;
}

.case-stat-label {
    display: block;
    font-size: 0.75rem;
    color: var(--gray-500);
    margin-top: 0.25rem;
}

.case-engine-tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--gray-50) 100%);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--gray-700);
}

.cases-cta {
    text-align: center;
    margin-top: 3rem;
    padding: 2.5rem;
    background: linear-gradient(135deg, var(--gray-900) 0%, var(--dark-light) 100%);
    border-radius: var(--radius-xl);
}

.cases-cta p {
    color: var(--white);
    font-size: 1.125rem;
    margin-bottom: 1.25rem;
}

.cases-cta .btn {
    background: var(--white);
    color: var(--primary);
    border-color: var(--white);
}

.cases-cta .btn:hover {
    background: var(--gray-100);
    color: var(--primary-dark);
}

/* ========================================
   About Section
   ======================================== */
.about {
    background: var(--white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-content .section-tag {
    margin-bottom: 1rem;
}

.about-content h2 {
    margin-bottom: 1.5rem;
}

.about-desc {
    font-size: 1.0625rem;
    line-height: 1.8;
    margin-bottom: 2rem;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.feature-item {
    display: flex;
    gap: 1rem;
}

.feature-item .feature-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background: var(--success);
    border-radius: var(--radius);
}

.feature-item .feature-icon svg {
    color: var(--white);
}

.feature-item h4 {
    margin-bottom: 0.25rem;
}

.feature-item p {
    font-size: 0.9375rem;
}

.about-visual {
    position: relative;
}

.about-image-placeholder {
    position: relative;
    width: 100%;
    aspect-ratio: 1;
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--gray-50) 100%);
    border-radius: var(--radius-2xl);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.about-shape {
    position: absolute;
    border-radius: 50%;
}

.about-shape.shape-1 {
    width: 60%;
    height: 60%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    opacity: 0.1;
    top: -10%;
    right: -10%;
}

.about-shape.shape-2 {
    width: 40%;
    height: 40%;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
    opacity: 0.1;
    bottom: -5%;
    left: -5%;
}

.about-center-icon {
    font-size: 8rem;
    position: relative;
    z-index: 1;
}

/* ========================================
   Contact Section
   ======================================== */
.contact {
    background: var(--gray-50);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 3rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-item {
    display: flex;
    gap: 1rem;
}

.contact-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

.contact-icon.whatsapp-icon {
    background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
}

.contact-item h4 {
    margin-bottom: 0.25rem;
}

.contact-item p {
    font-size: 0.9375rem;
}

.contact-form {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
}

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

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    font-size: 0.9375rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    background: var(--white);
    transition: var(--transition);
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--gray-900);
    color: var(--gray-400);
    padding: 4rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand .logo {
    margin-bottom: 1rem;
}

.footer-brand .logo-text {
    color: var(--white);
}

.footer-desc {
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--gray-400);
}

.footer-links h4 {
    color: var(--white);
    margin-bottom: 1.5rem;
    font-size: 1rem;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-links a {
    font-size: 0.9375rem;
    color: var(--gray-400);
    transition: var(--transition);
}

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

.footer-links li {
    font-size: 0.9375rem;
    color: var(--gray-400);
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid var(--gray-800);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.875rem;
    color: var(--gray-500);
}

/* ========================================
   Back to Top
   ======================================== */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 48px;
    height: 48px;
    background: var(--primary);
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
    z-index: 100;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
}

/* ========================================
   WhatsApp Floating Button
   ======================================== */
.whatsapp-float {
    position: fixed;
    bottom: 2rem;
    right: 5.5rem;
    width: 56px;
    height: 56px;
    background: #25D366;
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
    transition: var(--transition);
    z-index: 100;
    animation: whatsapp-pulse 2s infinite;
}

.whatsapp-float:hover {
    background: #128C7E;
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.5);
}

@keyframes whatsapp-pulse {
    0% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.5); }
    70% { box-shadow: 0 0 0 15px rgba(37, 211, 102, 0); }
    100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
}

/* ========================================
   Product Modal
   ======================================== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
}

.modal-container {
    position: relative;
    width: 90%;
    max-width: 800px;
    max-height: 90vh;
    background: var(--white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transform: scale(0.9) translateY(20px);
    transition: var(--transition);
}

.modal.active .modal-container {
    transform: scale(1) translateY(0);
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 40px;
    height: 40px;
    background: var(--gray-100);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    transition: var(--transition);
}

.modal-close:hover {
    background: var(--gray-200);
}

.modal-close svg {
    color: var(--gray-600);
}

.modal-content {
    max-height: 90vh;
    overflow-y: auto;
}

/* Product Detail Styles */
.product-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
}

.product-detail-visual {
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--gray-50) 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem;
    min-height: 400px;
}

.product-detail-img {
    max-height: 280px;
    max-width: 100%;
    object-fit: contain;
    margin-bottom: 1rem;
}

.product-detail-visual .engine-label {
    font-size: 2rem;
    font-weight: 700;
    color: var(--gray-700);
}

.product-detail-info {
    padding: 2.5rem;
}

.product-detail-info h2 {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
    color: var(--gray-900);
}

.product-detail-info .product-tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--primary);
    color: var(--white);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 50px;
    margin-bottom: 1.5rem;
}

.product-detail-info .product-description {
    font-size: 1rem;
    color: var(--gray-600);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.product-detail-specs {
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.product-detail-specs h3 {
    font-size: 1rem;
    margin-bottom: 1rem;
    color: var(--gray-900);
}

.spec-table {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

.spec-table-item {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--gray-200);
}

.spec-table-item .spec-label {
    color: var(--gray-500);
    font-size: 0.875rem;
}

.spec-table-item .spec-value {
    font-weight: 600;
    color: var(--gray-800);
    font-size: 0.875rem;
}

.spec-table-item .spec-value.highlight {
    color: var(--primary);
}

.product-detail-features {
    margin-bottom: 2rem;
}

.product-detail-features h3 {
    font-size: 1rem;
    margin-bottom: 1rem;
    color: var(--gray-900);
}

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

.feature-list-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9375rem;
    color: var(--gray-700);
}

.feature-list-item .check-icon {
    width: 20px;
    height: 20px;
    background: var(--success);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.feature-list-item .check-icon svg {
    width: 12px;
    height: 12px;
    color: var(--white);
}

.product-detail-actions {
    display: flex;
    gap: 1rem;
}

.product-detail-actions .btn {
    flex: 1;
}

/* ========================================
   Toast
   ======================================== */
.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--success);
    color: var(--white);
    padding: 1rem 2rem;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    box-shadow: var(--shadow-xl);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 1000;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
    visibility: visible;
}

.toast-icon {
    width: 24px;
    height: 24px;
    background: var(--white);
    color: var(--success);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-desc {
        margin: 0 auto 2rem;
    }

    .hero-actions {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-visual {
        display: none;
    }

    .product-grid {
        grid-template-columns: 1fr;
    }

    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .app-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-grid {
        grid-template-columns: 1fr;
    }

    .about-visual {
        order: -1;
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links,
    .nav-actions {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .hero {
        padding: 100px 0 60px;
    }

    .hero-stats {
        flex-wrap: wrap;
        gap: 1rem;
    }

    .stat-divider {
        display: none;
    }

    .stat {
        flex: 1;
        min-width: 80px;
    }

    section {
        padding: 60px 0;
    }

    .section-header {
        margin-bottom: 2rem;
    }

    .feature-grid,
    .app-grid {
        grid-template-columns: 1fr;
    }

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

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    .hero-actions {
        flex-direction: column;
    }

    .hero-actions .btn {
        width: 100%;
    }

    .product-detail {
        grid-template-columns: 1fr;
    }

    .product-detail-visual {
        padding: 2rem;
        min-height: 250px;
    }

    .product-detail-img {
        max-height: 200px;
    }

    .product-detail-visual .engine-label {
        font-size: 1.5rem;
    }

    .product-detail-info {
        padding: 1.5rem;
    }

    .spec-table {
        grid-template-columns: 1fr;
    }

    .product-detail-actions {
        flex-direction: column;
    }

    .modal-container {
        width: 95%;
        max-height: 95vh;
    }

    .case-card {
        grid-template-columns: 1fr;
    }

    .case-card:nth-child(even) .case-image,
    .case-card:nth-child(even) .case-content {
        order: unset;
    }

    .case-image {
        min-height: 250px;
    }

    .case-content {
        padding: 1.5rem;
    }

    .case-stats {
        gap: 1rem;
    }

    .case-stat-number {
        font-size: 1.125rem;
    }
}

@media (max-width: 480px) {
    .hero-actions {
        flex-direction: column;
    }

    .hero-actions .btn {
        width: 100%;
    }

    .product-content {
        padding: 1rem;
    }

    .whatsapp-float {
        bottom: 5rem;
        right: 1rem;
        width: 50px;
        height: 50px;
    }

    .back-to-top {
        bottom: 1rem;
        right: 1rem;
    }
}

/* ========================================
   Product Card Price
   ======================================== */
.product-price {
    display: flex;
    align-items: baseline;
    gap: 0.4rem;
    margin: 1rem 0 0.8rem;
    padding-top: 0.8rem;
    border-top: 1px dashed var(--gray-200);
}

.price-label {
    font-size: 0.85rem;
    color: var(--gray-500);
    font-weight: 500;
}

.price-amount {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -0.02em;
}

/* ========================================
   Product Detail Pricing
   ======================================== */
.product-detail-pricing {
    margin-bottom: 2rem;
}

.product-detail-pricing h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 0.75rem;
}

.price-table {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.price-table-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.6rem 0.9rem;
    background: var(--gray-50);
    border-radius: 6px;
    border-left: 3px solid var(--primary);
}

.price-config {
    font-size: 0.9rem;
    color: var(--gray-700);
    font-weight: 500;
}

.price-value {
    font-size: 1rem;
    font-weight: 700;
    color: var(--primary);
}

.price-note {
    font-size: 0.8rem;
    color: var(--gray-500);
    margin-top: 0.5rem;
    font-style: italic;
}

/* ========================================
   Engineering Drawings
   ======================================== */
.product-detail-drawings {
    margin: 2rem 0;
}

.product-detail-drawings h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 0.75rem;
}

.drawings-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.drawing-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 8px;
    overflow: hidden;
    text-align: center;
    transition: box-shadow 0.2s ease;
}

.drawing-card:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.drawing-img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: contain;
    background: var(--gray-50);
}

.drawing-caption {
    display: block;
    padding: 0.5rem;
    font-size: 0.8rem;
    color: var(--gray-600);
    font-weight: 500;
    background: var(--white);
}

@media (max-width: 768px) {
    .drawings-grid {
        grid-template-columns: 1fr;
    }
}