/* ============================================
   BKS Logistics - Modern Transport Website
   ============================================ */

/* CSS Variables */
:root {
    --primary: #DC2626;
    --primary-dark: #991B1B;
    --primary-light: #F87171;
    --secondary: #F0F1F3;
    --accent: #9B9EA4;
    --dark: #C8C9CD;
    --dark-light: #DCDDE1;
    --gray: #6B6C70;
    --gray-light: #4B4C50;
    --light: #ffffff;
    --white: #1E1F21;
    --gradient: linear-gradient(135deg, #7F1D1D 0%, #DC2626 60%, #EF4444 100%);
    --gradient-dark: linear-gradient(135deg, var(--secondary) 0%, var(--dark-light) 100%);
    --shadow: 0 4px 6px -1px rgba(30, 31, 33, 0.1), 0 2px 4px -2px rgba(30, 31, 33, 0.08);
    --shadow-lg: 0 10px 15px -3px rgba(30, 31, 33, 0.12), 0 4px 6px -4px rgba(30, 31, 33, 0.08);
    --shadow-xl: 0 20px 25px -5px rgba(30, 31, 33, 0.15), 0 8px 10px -6px rgba(30, 31, 33, 0.1);
    --radius: 12px;
    --radius-lg: 20px;
    --transition: all 0.3s ease;
}

/* Reset & Base */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--dark);
    color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(30, 31, 33, 0.1);
    transition: var(--transition);
}

.navbar.scrolled {
    padding: 12px 0;
    background: rgba(255, 255, 255, 0.97);
    box-shadow: 0 2px 20px rgba(30, 31, 33, 0.12);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
}

.logo-icon {
    font-size: 1.8rem;
}

.logo-highlight {
    color: var(--primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    padding: 10px 18px;
    border-radius: 8px;
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--gray);
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
    background: rgba(46, 134, 171, 0.08);
}

.nav-link.btn-contact {
    background: var(--gradient);
    color: #ffffff;
    margin-left: 8px;
}

.nav-link.btn-contact:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(220, 38, 38, 0.4);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.hamburger span {
    width: 24px;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
    transition: var(--transition);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background: var(--gradient);
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(220, 38, 38, 0.35);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(220, 38, 38, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--white);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
}

.btn-arrow {
    transition: transform 0.3s ease;
}

.btn:hover .btn-arrow {
    transform: translateX(4px);
}

.btn-large {
    padding: 18px 36px;
    font-size: 1.1rem;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 30% 20%, rgba(46, 134, 171, 0.12) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 80%, rgba(220, 38, 38, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    flex: 1;
    max-width: 600px;
    padding: 0 24px;
    margin-left: calc((100vw - 1200px) / 2);
    position: relative;
    z-index: 2;
}

@media (max-width: 1248px) {
    .hero-content {
        margin-left: 24px;
    }
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(220, 38, 38, 0.1);
    border: 1px solid rgba(220, 38, 38, 0.3);
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--primary);
    margin-bottom: 24px;
    animation: fadeInUp 0.6s ease;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    animation: fadeInUp 0.6s ease 0.1s both;
}

.gradient-text {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.15rem;
    color: var(--gray-light);
    margin-bottom: 32px;
    max-width: 500px;
    animation: fadeInUp 0.6s ease 0.2s both;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 48px;
    animation: fadeInUp 0.6s ease 0.3s both;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 32px;
    animation: fadeInUp 0.6s ease 0.4s both;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary);
}

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

.stat-divider {
    width: 1px;
    height: 40px;
    background: rgba(220, 38, 38, 0.2);
}

.hero-visual {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-image {
    position: relative;
    width: 100%;
    max-width: 500px;
    animation: float 6s ease-in-out infinite;
}

.hero-img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    object-fit: cover;
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--gray);
    font-size: 0.85rem;
    animation: bounce 2s infinite;
}

.scroll-arrow {
    width: 20px;
    height: 20px;
    border-right: 2px solid var(--gray);
    border-bottom: 2px solid var(--gray);
    transform: rotate(45deg);
}

/* ============================================
   Section Styles
   ============================================ */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(220, 38, 38, 0.1);
    border: 1px solid rgba(220, 38, 38, 0.3);
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 800;
    margin-bottom: 16px;
}

.section-description {
    font-size: 1.1rem;
    color: var(--gray-light);
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   Services Section
   ============================================ */
.services {
    padding: 100px 0;
    background: linear-gradient(180deg, var(--dark) 0%, var(--dark-light) 100%);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.service-card {
    background: #ffffff;
    border: 1px solid rgba(30, 31, 33, 0.1);
    border-radius: var(--radius-lg);
    padding: 36px;
    position: relative;
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-8px);
    border-color: rgba(220, 38, 38, 0.4);
    box-shadow: 0 10px 30px rgba(220, 38, 38, 0.12);
}

.service-card.featured {
    border-color: var(--primary);
    background: rgba(220, 38, 38, 0.04);
}

.featured-badge {
    position: absolute;
    top: -12px;
    right: 24px;
    padding: 6px 16px;
    background: var(--gradient);
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    color: #ffffff;
}

.service-icon {
    width: 60px;
    height: 60px;
    background: rgba(220, 38, 38, 0.1);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.service-card>p {
    color: var(--gray-light);
    margin-bottom: 20px;
}

.service-features {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.service-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
    color: var(--gray-light);
}

.service-features li::before {
    content: '✓';
    color: var(--primary);
    font-weight: 700;
}

/* ============================================
   About Section
   ============================================ */
.about {
    padding: 100px 0;
    background: var(--dark-light);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-content .section-badge {
    margin-bottom: 16px;
}

.about-content .section-title {
    text-align: left;
    margin-bottom: 24px;
}

.about-text {
    color: var(--gray-light);
    margin-bottom: 16px;
    font-size: 1.05rem;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 32px;
}

.about-feature {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 500;
}

.feature-icon {
    width: 28px;
    height: 28px;
    background: rgba(220, 38, 38, 0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 0.9rem;
}

.about-visual {
    display: flex;
    justify-content: center;
}

.about-card {
    width: 300px;
    height: 300px;
    background: var(--gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.about-card::before {
    content: '';
    position: absolute;
    inset: -20px;
    border: 2px dashed rgba(220, 38, 38, 0.4);
    border-radius: 50%;
    animation: spin 20s linear infinite;
}

.experience-badge {
    text-align: center;
    color: var(--white);
}

.exp-number {
    display: block;
    font-size: 4rem;
    font-weight: 800;
    line-height: 1;
}

.exp-text {
    font-size: 1.2rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* ============================================
   Advantages Section
   ============================================ */
.advantages {
    padding: 100px 0;
    background: var(--dark);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.advantage-card {
    background: #ffffff;
    border: 1px solid rgba(30, 31, 33, 0.1);
    border-radius: var(--radius-lg);
    padding: 32px;
    text-align: center;
    transition: var(--transition);
}

.advantage-card:hover {
    transform: translateY(-5px);
    border-color: rgba(220, 38, 38, 0.4);
    box-shadow: 0 10px 30px rgba(220, 38, 38, 0.12);
}

.advantage-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.advantage-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.advantage-card p {
    color: var(--gray-light);
    font-size: 0.95rem;
}

/* ============================================
   CTA Section
   ============================================ */
.cta {
    padding: 100px 0;
    background: var(--gradient);
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.cta-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.cta h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    margin-bottom: 16px;
}

.cta p {
    font-size: 1.2rem;
    margin-bottom: 32px;
    opacity: 0.9;
}

.cta .btn-primary {
    background: #ffffff;
    color: var(--primary-dark);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.cta .btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

/* ============================================
   Contact Page Styles
   ============================================ */
.contact-hero {
    padding: 160px 0 80px;
    background: var(--dark);
    text-align: center;
}

.contact-content {
    padding: 80px 0;
    background: var(--dark-light);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
}

.contact-info h2 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.contact-info>p {
    color: var(--gray-light);
    margin-bottom: 32px;
}

.info-cards {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.info-card {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px;
    background: #ffffff;
    border: 1px solid rgba(30, 31, 33, 0.1);
    border-radius: var(--radius);
    transition: var(--transition);
}

.info-card:hover {
    border-color: rgba(220, 38, 38, 0.4);
    box-shadow: 0 5px 20px rgba(220, 38, 38, 0.1);
}

.info-icon {
    font-size: 1.8rem;
}

.info-content h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.info-content p {
    color: var(--gray-light);
    font-size: 0.95rem;
}

.contact-form-wrapper {
    position: relative;
}

.contact-form {
    background: #ffffff;
    border: 1px solid rgba(30, 31, 33, 0.1);
    border-radius: var(--radius-lg);
    padding: 40px;
}

.contact-form h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.contact-form>p {
    color: var(--gray-light);
    margin-bottom: 32px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--gray-light);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    background: #EEEEF1;
    border: 1px solid rgba(30, 31, 33, 0.15);
    border-radius: var(--radius);
    color: #1E1F21;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: #ffffff;
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.15);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--gray);
}

.form-group select {
    cursor: pointer;
}

.form-group select option {
    background: var(--dark);
}

.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.checkbox-group input[type="checkbox"] {
    width: 20px;
    height: 20px;
    margin-top: 2px;
    cursor: pointer;
}

.checkbox-group label {
    font-size: 0.9rem;
    margin-bottom: 0;
    cursor: pointer;
}

.btn-submit {
    width: 100%;
    justify-content: center;
    margin-top: 12px;
}

.form-success {
    display: none;
    position: absolute;
    inset: 0;
    background: rgba(28, 28, 30, 0.97);
    border-radius: var(--radius-lg);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 40px;
}

.form-success.show {
    display: flex;
}

.success-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    margin-bottom: 24px;
}

.form-success h3 {
    font-size: 1.8rem;
    margin-bottom: 12px;
}

.form-success p {
    color: var(--gray-light);
    margin-bottom: 32px;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--dark);
    padding: 60px 0 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand p {
    color: var(--gray);
    margin-top: 16px;
    max-width: 280px;
}

.footer-links h4,
.footer-contact h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.footer-links ul,
.footer-contact ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a,
.footer-contact li {
    color: var(--gray);
    font-size: 0.95rem;
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--gray);
    font-size: 0.9rem;
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-20px);
    }
}

@keyframes bounce {

    0%,
    100% {
        transform: translateX(-50%) translateY(0);
    }

    50% {
        transform: translateX(-50%) translateY(10px);
    }
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 992px) {
    .hero {
        flex-direction: column;
        padding: 140px 0 80px;
    }

    .hero-content {
        max-width: 100%;
        margin: 0;
        padding: 0 24px;
        text-align: center;
    }

    .hero-description {
        margin: 0 auto 32px;
    }

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

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

    .hero-visual {
        margin-top: 60px;
    }

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

    .about-content .section-title {
        text-align: center;
    }

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

    .about-features {
        justify-content: center;
    }

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

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

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.97);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 24px;
        gap: 8px;
        transform: translateY(-150%);
        opacity: 0;
        transition: var(--transition);
        box-shadow: 0 10px 30px rgba(30, 31, 33, 0.15);
    }

    .nav-links.open {
        transform: translateY(0);
        opacity: 1;
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }

    .stat-divider {
        width: 60px;
        height: 1px;
    }

    .hero-card {
        width: 300px;
        height: 220px;
    }

    .truck-cargo {
        width: 120px;
        height: 55px;
    }

    .cargo-text {
        font-size: 1.2rem;
    }

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

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

    .about-card {
        width: 220px;
        height: 220px;
    }

    .exp-number {
        font-size: 3rem;
    }

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

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-brand p {
        margin: 16px auto 0;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .btn {
        padding: 12px 24px;
        font-size: 0.95rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .service-card,
    .advantage-card,
    .contact-form {
        padding: 24px;
    }
}