/* ===================================
   NASHCO GLOBAL - COMPREHENSIVE STYLES
   Bilingual (EN/AR) Single-Page Website
   =================================== */

/* === CSS VARIABLES === */
:root {
    --primary-color: #c41e3a;
    --secondary-color: #1a472a;
    --accent-color: #2d5f3f;
    --text-dark: #1a1a1a;
    --text-light: #ffffff;
    --text-gray: #6b7280;
    --bg-light: #f9fafb;
    --bg-white: #ffffff;
    --overlay-dark: rgba(0, 0, 0, 0.6);
    --overlay-light: rgba(0, 0, 0, 0.3);
    
    --spacing-xs: 1rem;
    --spacing-sm: 2rem;
    --spacing-md: 4rem;
    --spacing-lg: 8rem;
    --spacing-xl: 10rem;
    --spacing-xxl: 14rem;
    
    --transition-smooth: all 0.3s ease;
    --transition-fast: all 0.2s ease;
    
    --font-en: 'Inter', sans-serif;
    --font-ar: 'Tajawal', sans-serif;
}

/* === RESET & BASE === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-en);
    color: var(--text-dark);
    line-height: 1.7;
    overflow-x: hidden;
    background: var(--bg-white);
}

body[dir="rtl"] {
    font-family: var(--font-ar);
}

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

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

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

/* === CONTAINER === */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

@media (max-width: 768px) {
    .container {
        padding: 0 1.5rem;
    }
}

/* === HEADER & NAVIGATION === */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, #1e3a5f 0%, var(--text-dark) 100%);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
    z-index: 1000;
    transition: var(--transition-smooth);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.logo-container {
    flex-shrink: 0;
}

.main-logo {
    height: 80px;
    width: auto;
    object-fit: contain;
    transition: var(--transition-smooth);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2.5rem;
    align-items: center;
    flex: 1;
    justify-content: center;
}

.nav-menu li a {
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    padding: 0.5rem 0;
    color: var(--text-light);
    transition: var(--transition-smooth);
}

.nav-menu li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: #4a9eff;
    transition: var(--transition-smooth);
}

.nav-menu li a:hover {
    color: #4a9eff;
}

.nav-menu li a:hover::after {
    width: 100%;
}

body[dir="rtl"] .nav-menu li a::after {
    left: auto;
    right: 0;
}

.lang-toggle {
    padding: 0.6rem 1.5rem;
    background: var(--primary-color);
    color: var(--text-light);
    border-radius: 30px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition-smooth);
    flex-shrink: 0;
}

.lang-toggle:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(196, 30, 58, 0.3);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 0.4rem;
    padding: 0.5rem;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-light);
    border-radius: 2px;
    transition: var(--transition-smooth);
}

/* === HERO SECTION === */
.hero-section {
    position: relative;
    min-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin-top: 100px;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -2;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(13, 71, 161, 0.85) 0%, rgba(21, 101, 192, 0.75) 100%);
    z-index: -1;
}

.hero-content {
    text-align: center;
    color: var(--text-light);
    max-width: 900px;
    padding: 2rem;
    animation: fadeInUp 1s ease;
}

.hero-title {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 800;
    letter-spacing: 0.05em;
    margin-bottom: 1.5rem;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: clamp(1.3rem, 3vw, 2rem);
    font-weight: 400;
    margin-bottom: 1rem;
    opacity: 0.95;
}

.hero-description {
    font-size: clamp(1rem, 2vw, 1.3rem);
    margin-bottom: 3rem;
    line-height: 1.8;
    opacity: 0.9;
}

.hero-cta {
    display: inline-block;
    padding: 1.2rem 3rem;
    background: var(--text-light);
    color: var(--primary-color);
    font-weight: 700;
    font-size: 1.1rem;
    border-radius: 50px;
    transition: var(--transition-smooth);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.hero-cta:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.3);
    background: var(--primary-color);
    color: var(--text-light);
}

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

/* === SECTION STYLING === */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.title-underline {
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    margin: 0 auto;
    border-radius: 2px;
}

/* === ABOUT US SECTION === */
.about-section {
    position: relative;
    padding: var(--spacing-xxl) 0;
    background: var(--bg-white);
}

.about-background-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    overflow: hidden;
}

.about-background {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.08;
}

.about-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0.9));
}

.about-section .container {
    position: relative;
    z-index: 1;
}

.about-content {
    display: grid;
    gap: var(--spacing-md);
}

.about-text {
    max-width: 900px;
    margin: 0 auto;
}

.about-lead {
    font-size: clamp(1.3rem, 2.5vw, 1.8rem);
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.about-text p {
    font-size: clamp(1.05rem, 1.8vw, 1.2rem);
    color: var(--text-dark);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-top: var(--spacing-md);
}

.stat-item {
    text-align: center;
    padding: 3rem 2rem;
    background: linear-gradient(135deg, var(--bg-light) 0%, var(--bg-white) 100%);
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    transition: var(--transition-smooth);
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.stat-number {
    font-size: clamp(3rem, 5vw, 4.5rem);
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1.1rem;
    color: var(--text-gray);
    font-weight: 500;
}

/* === ZAHY AL KHALEEJ SECTION === */
.zahy-section {
    padding: var(--spacing-xxl) 0;
    background: linear-gradient(135deg, var(--bg-light) 0%, var(--bg-white) 100%);
}

.zahy-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    align-items: center;
}

.zahy-logo-wrapper {
    text-align: center;
    padding: 3rem;
}

.zahy-logo {
    max-width: 180px;
    width: 100%;
    height: auto;
    margin: 0 auto 1.5rem;
    object-fit: contain;
}

.zahy-tagline {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--secondary-color);
    margin-top: 1rem;
}

.zahy-text {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.zahy-text p {
    font-size: clamp(1.05rem, 1.8vw, 1.2rem);
    line-height: 1.8;
    color: var(--text-dark);
    margin-top: 2rem;
}

.zahy-image-wrapper {
    margin-top: var(--spacing-md);
    overflow: hidden;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.zahy-image {
    width: 100%;
    height: auto;
    min-height: 400px;
    object-fit: cover;
    transition: var(--transition-smooth);
}

.zahy-image-wrapper:hover .zahy-image {
    transform: scale(1.05);
}

/* === DIVISION SECTIONS === */
.division-section {
    padding: var(--spacing-xl) 0;
    background: var(--bg-white);
}

.division-section:nth-child(even) {
    background: var(--bg-light);
}

.division-hero {
    position: relative;
    height: 70vh;
    min-height: 500px;
    overflow: hidden;
    margin-bottom: var(--spacing-lg);
    border-radius: 0;
}

.division-hero-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.division-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--overlay-dark);
}

.division-hero-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 4rem 2rem;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
}

.division-title {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 700;
    color: var(--text-light);
    text-align: center;
}

.division-content {
    max-width: 1200px;
    margin: 0 auto;
}

.division-lead {
    font-size: clamp(1.2rem, 2.2vw, 1.6rem);
    font-weight: 600;
    color: var(--primary-color);
    text-align: center;
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

.division-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    margin-top: var(--spacing-md);
}

.feature-item {
    padding: 3rem 2.5rem;
    background: var(--bg-white);
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: var(--transition-smooth);
    border-left: 4px solid var(--primary-color);
}

.division-section:nth-child(even) .feature-item {
    background: var(--bg-light);
}

body[dir="rtl"] .feature-item {
    border-left: none;
    border-right: 4px solid var(--primary-color);
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 45px rgba(0, 0, 0, 0.12);
}

.feature-item h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.feature-item p {
    font-size: 1.05rem;
    line-height: 1.7;
    color: var(--text-gray);
}

/* === CHEMICALS SECTION === */
.chemicals-section {
    padding: var(--spacing-xxl) 0;
    background: var(--bg-white);
}

.chemicals-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.chemicals-image-wrapper {
    overflow: hidden;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.chemicals-image {
    width: 100%;
    height: 600px;
    object-fit: cover;
    transition: var(--transition-smooth);
}

.chemicals-image-wrapper:hover .chemicals-image {
    transform: scale(1.05);
}

.chemicals-text {
    padding: 2rem;
}

.chemicals-text p {
    font-size: clamp(1.05rem, 1.8vw, 1.2rem);
    line-height: 1.8;
    color: var(--text-dark);
    margin-top: 2rem;
}

body[dir="rtl"] .chemicals-content {
    direction: rtl;
}

/* === CONTACT SECTION === */
.contact-section {
    position: relative;
    padding: var(--spacing-xxl) 0;
    background: var(--bg-light);
}

.contact-background-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.contact-background {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.06;
}

.contact-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(249, 250, 251, 0.95), rgba(249, 250, 251, 0.98));
}

.contact-section .container {
    position: relative;
    z-index: 1;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-md);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    padding: 2rem;
    background: var(--bg-white);
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    transition: var(--transition-smooth);
}

.contact-item:hover {
    transform: translateX(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
}

body[dir="rtl"] .contact-item:hover {
    transform: translateX(5px);
}

.contact-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.contact-item h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
}

.contact-item p {
    font-size: 1.05rem;
    color: var(--text-gray);
}

.contact-form-wrapper {
    background: var(--bg-white);
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
}

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

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 1.2rem 1.5rem;
    border: 2px solid #e5e7eb;
    border-radius: 10px;
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition-smooth);
    background: var(--bg-light);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    background: var(--bg-white);
}

.contact-form textarea {
    resize: vertical;
    min-height: 150px;
}

.submit-btn {
    padding: 1.2rem 3rem;
    background: var(--primary-color);
    color: var(--text-light);
    font-weight: 700;
    font-size: 1.1rem;
    border-radius: 50px;
    transition: var(--transition-smooth);
    cursor: pointer;
    align-self: flex-start;
}

.submit-btn:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(196, 30, 58, 0.3);
}

/* === FOOTER === */
.footer {
    background: linear-gradient(135deg, #1e3a5f 0%, var(--text-dark) 100%);
    color: var(--text-light);
    padding: var(--spacing-lg) 0 var(--spacing-sm) 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.footer-logo-section {
    text-align: center;
}

.footer-logo {
    max-width: 200px;
    height: auto;
    margin: 0 auto 1rem;
    filter: brightness(0) invert(1);
}

.footer-tagline {
    font-size: 1.1rem;
    opacity: 0.9;
}

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

.footer-zahy-logo {
    max-width: 150px;
    width: 100%;
    margin: 0 auto 1rem;
    filter: brightness(0) invert(1);
}

.footer-zahy-text {
    font-size: 1rem;
    opacity: 0.8;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    opacity: 0.7;
}

/* === WHATSAPP FLOATING BUTTON === */
.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: #25d366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
    z-index: 999;
    transition: var(--transition-smooth);
}

body[dir="rtl"] .whatsapp-float {
    right: auto;
    left: 30px;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 30px rgba(37, 211, 102, 0.6);
}

.whatsapp-icon {
    width: 32px;
    height: 32px;
    color: var(--text-light);
}

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

/* Tablet */
@media (max-width: 1024px) {
    :root {
        --spacing-xl: 8rem;
        --spacing-xxl: 10rem;
    }
    
    .main-logo {
        height: 70px;
    }
    
    .chemicals-content {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
}

/* Mobile */
@media (max-width: 768px) {
    :root {
        --spacing-lg: 5rem;
        --spacing-xl: 6rem;
        --spacing-xxl: 8rem;
    }
    
    .nav-container {
        padding: 1rem 1.5rem;
    }
    
    .main-logo {
        height: 60px;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 100px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 100px);
        background: var(--bg-white);
        flex-direction: column;
        padding: 3rem 2rem;
        gap: 2rem;
        box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
        transition: var(--transition-smooth);
        overflow-y: auto;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    body[dir="rtl"] .nav-menu {
        left: auto;
        right: -100%;
    }
    
    body[dir="rtl"] .nav-menu.active {
        right: 0;
    }
    
    .nav-menu li {
        width: 100%;
        text-align: center;
    }
    
    .nav-menu li a {
        font-size: 1.2rem;
        display: block;
        padding: 1rem;
    }
    
    .hero-section {
        min-height: 80vh;
        margin-top: 100px;
    }
    
    .division-hero {
        height: 50vh;
        min-height: 400px;
    }
    
    .division-features,
    .about-stats {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .zahy-content {
        gap: var(--spacing-sm);
    }
    
    .zahy-image {
        min-height: 300px;
    }
    
    .chemicals-image {
        height: 400px;
    }
    
    .contact-form-wrapper {
        padding: 2rem 1.5rem;
    }
    
    .whatsapp-float {
        bottom: 20px;
        right: 20px;
        width: 55px;
        height: 55px;
    }
    
    body[dir="rtl"] .whatsapp-float {
        right: auto;
        left: 20px;
    }
    
    .submit-btn {
        align-self: stretch;
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    html {
        font-size: 14px;
    }
    
    :root {
        --spacing-lg: 4rem;
        --spacing-xl: 5rem;
        --spacing-xxl: 6rem;
    }
    
    .container {
        padding: 0 1rem;
    }
    
    .hero-content {
        padding: 1.5rem;
    }
    
    .stat-item,
    .feature-item {
        padding: 2rem 1.5rem;
    }
}

/* RTL Specific Adjustments */
body[dir="rtl"] {
    text-align: right;
}

body[dir="rtl"] .hero-content,
body[dir="rtl"] .section-header,
body[dir="rtl"] .zahy-text {
    text-align: center;
}

body[dir="rtl"] .about-text,
body[dir="rtl"] .chemicals-text {
    text-align: right;
}

/* Print Styles */
@media print {
    .header,
    .whatsapp-float,
    .hero-cta,
    .lang-toggle,
    .mobile-menu-toggle {
        display: none;
    }
    
    .hero-section {
        margin-top: 0;
        min-height: auto;
        page-break-after: always;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #d10024;
        --secondary-color: #0a2818;
        --text-gray: #4a5568;
    }
}