/* ============================================
   BLACK BELT LOGISTICS - PREMIUM STYLES
   ============================================ */

:root {
    /* Colors - Dark, powerful palette */
    --black: #0a0a0a;
    --black-light: #111111;
    --black-lighter: #1a1a1a;
    --black-card: #141414;
    --white: #ffffff;
    --gray-100: #f1f2f4;
    --gray-200: #e5e5e5;
    --gray-300: #d4d4d4;
    --gray-400: #a3a3a3;
    --gray-500: #737373;
    --gray-600: #525252;

    /* Accent - Bold red from logo */
    --accent: #e53935;
    --accent-dark: #c62828;
    --accent-glow: rgba(229, 57, 53, 0.15);

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Spacing */
    --section-padding: 120px;
    --container-width: 1200px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Borders */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 9999px;
}

/* ============================================
   RESET & BASE
   ============================================ */

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-400);
    background-color: var(--black);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-label {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--accent);
    margin-bottom: 16px;
}

.section-header h2 {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 700;
    color: var(--white);
    line-height: 1.2;
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    padding: 12px 24px;
    border-radius: var(--radius-full);
    transition: all var(--transition-normal);
}

.btn-primary {
    background-color: var(--black);
    color: var(--white);
}

.btn-primary:hover {
    background-color: var(--black-light);
    transform: translateY(-2px);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.btn-large {
    padding: 16px 32px;
    font-size: 16px;
}

/* ============================================
   NAVIGATION
   ============================================ */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-logo img {
    height: 40px;
    width: auto;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.logo-bold {
    font-size: 14px;
    font-weight: 800;
    color: var(--white);
    letter-spacing: 1px;
}

.logo-light {
    font-size: 12px;
    font-weight: 500;
    color: var(--gray-500);
    letter-spacing: 1px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav-links a {
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-400);
    transition: color var(--transition-fast);
}

.nav-links a:hover {
    color: var(--white);
}

.nav-cta {
    padding: 10px 20px;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--white);
    transition: all var(--transition-fast);
}

/* Mobile Menu */
.mobile-menu {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--black-light);
    padding: 24px;
    flex-direction: column;
    gap: 16px;
    border-bottom: 1px solid var(--black-lighter);
    z-index: 999;
}

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

.mobile-menu a {
    font-size: 16px;
    font-weight: 500;
    padding: 12px 0;
    color: var(--gray-400);
}

.mobile-menu .btn {
    margin-top: 8px;
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
    padding-top: 140px;
    padding-bottom: 80px;
    background: linear-gradient(135deg, var(--black) 0%, var(--black-light) 100%);
    overflow: hidden;
}

.hero-content {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-text {
    animation: fadeInUp 0.8s ease-out;
}

.hero-text h1 {
    font-size: clamp(40px, 6vw, 64px);
    font-weight: 800;
    color: var(--white);
    line-height: 1.1;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease-out 0.1s both;
}

.hero-text .highlight {
    color: var(--white);
}

.hero-text p {
    font-size: 18px;
    color: var(--gray-500);
    margin-bottom: 32px;
    max-width: 480px;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-text .btn {
    animation: fadeInUp 0.8s ease-out 0.3s both;
}

.hero-text .btn-accent {
    position: relative;
    overflow: hidden;
}

.hero-text .btn-accent::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 120%;
    height: 120%;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transform: translate(-50%, -50%) scale(0);
    animation: pulse-ring 2s ease-out infinite;
}

.hero-illustration {
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 1s ease-out 0.4s both;
}

.hero-illustration img {
    width: 100%;
    max-width: 500px;
    height: auto;
    animation: float 6s ease-in-out infinite;
}

/* Hero Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

@keyframes pulse-ring {
    0% {
        transform: translate(-50%, -50%) scale(0);
        opacity: 1;
    }
    100% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0;
    }
}

/* ============================================
   SERVICES SECTION
   ============================================ */

.services {
    padding: var(--section-padding) 0;
    background: var(--black-light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.service-card {
    background: var(--black-card);
    border-radius: var(--radius-lg);
    padding: 32px;
    display: flex;
    flex-direction: column;
    transition: all var(--transition-normal);
    border: 1px solid var(--black-lighter);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    border-color: var(--accent);
}

.service-icon {
    width: 64px;
    height: 64px;
    background: var(--black);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.service-icon svg {
    stroke: var(--white);
}

.service-content h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 12px;
}

.service-content p {
    font-size: 15px;
    color: var(--gray-400);
    flex-grow: 1;
    margin-bottom: 24px;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--accent);
}

.service-link:hover {
    color: var(--white);
}

/* ============================================
   BENEFITS SECTION
   ============================================ */

.benefits {
    padding: var(--section-padding) 0;
    background: var(--black);
}

.benefits .section-label {
    color: var(--accent);
}

.benefits .section-header h2 {
    color: var(--white);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.benefit-card {
    background: var(--black-light);
    border-radius: var(--radius-lg);
    padding: 32px;
    border: 1px solid var(--black-lighter);
    transition: all var(--transition-normal);
}

.benefit-card:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
}

.benefit-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.benefit-icon svg {
    stroke: var(--black);
}

.benefit-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 12px;
}

.benefit-card p {
    font-size: 14px;
    color: var(--gray-400);
    line-height: 1.7;
}

/* ============================================
   INDUSTRIES SECTION
   ============================================ */

.industries {
    padding: var(--section-padding) 0;
    background: var(--black-light);
}

.industries-content {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 40px;
}

.industries-tabs {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.industry-tab {
    text-align: left;
    padding: 16px 24px;
    font-size: 16px;
    font-weight: 600;
    color: var(--gray-500);
    background: transparent;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.industry-tab:hover {
    color: var(--white);
    background: var(--black-card);
}

.industry-tab.active {
    color: var(--black);
    background: var(--accent);
}

.industries-panels {
    background: var(--black-card);
    border-radius: var(--radius-lg);
    padding: 48px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--black-lighter);
}

.industry-panel {
    display: none;
}

.industry-panel.active {
    display: block;
}

.industry-panel h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 16px;
}

.industry-panel p {
    font-size: 16px;
    color: var(--gray-400);
    line-height: 1.8;
}

/* ============================================
   PROCESS SECTION
   ============================================ */

.process {
    padding: var(--section-padding) 0;
    background: var(--black);
}

.process-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 64px;
}

.process-header .section-header {
    text-align: left;
    margin-bottom: 0;
}

.process-steps {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 24px;
}

.process-step {
    text-align: center;
    max-width: 280px;
}

.step-icon {
    width: 80px;
    height: 80px;
    background: var(--black-card);
    border: 1px solid var(--black-lighter);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
}

.step-icon svg {
    stroke: var(--accent);
}

.process-step h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 12px;
}

.process-step p {
    font-size: 14px;
    color: var(--gray-400);
}

.process-connector {
    display: flex;
    align-items: center;
    padding-top: 32px;
    color: var(--gray-600);
}

/* ============================================
   CONTACT SECTION
   ============================================ */

.contact {
    padding: var(--section-padding) 0;
    background: var(--black-light);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
}

.contact-photo {
    border-radius: var(--radius-lg);
    overflow: hidden;
    height: 100%;
    min-height: 500px;
}

.contact-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.contact-form {
    background: var(--black-card);
    border-radius: var(--radius-lg);
    padding: 48px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--black-lighter);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    font-size: 15px;
    font-family: inherit;
    color: var(--white);
    background: var(--black-lighter);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--gray-500);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    background: var(--black);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-group select {
    width: 100%;
    padding: 14px 16px;
    font-size: 15px;
    font-family: inherit;
    color: var(--white);
    background: var(--black-lighter);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23737373' d='M6 8L2 4h8z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
}

.form-group select:focus {
    outline: none;
    border-color: var(--accent);
    background-color: var(--black);
}

.form-group select option {
    background: var(--black-lighter);
    color: var(--white);
}

.contact-form .btn {
    width: 100%;
}

.btn-accent {
    background-color: var(--accent);
    color: var(--white);
    font-size: 18px;
    padding: 18px 36px;
}

.btn-accent:hover {
    background-color: var(--accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 40px rgba(229, 57, 53, 0.3);
}

.form-trust {
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--black-lighter);
    text-align: center;
}

.form-trust p {
    font-size: 14px;
    color: var(--gray-400);
    margin-bottom: 8px;
}

.form-trust a {
    color: var(--accent);
    font-weight: 600;
}

.form-trust a:hover {
    color: var(--white);
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
    background: var(--black);
    padding: 64px 0 32px;
    border-top: 1px solid var(--black-lighter);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--black-lighter);
    margin-bottom: 32px;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-company {
    font-size: 18px;
    font-weight: 700;
    color: var(--white);
}

.footer-address {
    font-size: 14px;
    color: var(--gray-400);
}

.footer-phone {
    font-size: 14px;
    color: var(--accent);
    font-weight: 600;
}

.footer-phone:hover {
    color: var(--white);
}

.footer-links {
    display: flex;
    gap: 32px;
}

.footer-links a {
    font-size: 14px;
    color: var(--gray-400);
}

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

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

.footer-bottom p {
    font-size: 13px;
    color: var(--gray-500);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

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

    .hero-text p {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-illustration {
        max-width: 400px;
        margin: 0 auto;
    }

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

    .industries-content {
        grid-template-columns: 1fr;
    }

    .industries-tabs {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
    }

    .process-header {
        flex-direction: column;
        align-items: center;
        gap: 24px;
    }

    .process-header .section-header {
        text-align: center;
    }

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

    .contact-photo {
        min-height: 300px;
        max-height: 400px;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 80px;
    }

    .nav-links,
    .nav-cta {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .hero {
        padding-top: 120px;
    }

    .hero-illustration {
        max-width: 300px;
    }

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

    .process-steps {
        flex-direction: column;
        align-items: center;
    }

    .process-connector {
        transform: rotate(90deg);
        padding: 16px 0;
    }

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

    .contact-photo {
        min-height: 250px;
    }

    .footer-content {
        flex-direction: column;
        gap: 32px;
    }

    .footer-links {
        flex-wrap: wrap;
        gap: 16px 24px;
    }
}

@media (max-width: 480px) {
    .hero-text h1 {
        font-size: 36px;
    }

    .hero-illustration {
        max-width: 250px;
    }

    .contact-form {
        padding: 32px 24px;
    }

    .industries-panels {
        padding: 32px 24px;
    }
}