/* ===================================
   Joud Oil Services - Apple-Inspired Design
   Mobile-First Responsive CSS
   =================================== */

/* Import Cairo Font */
@import url('https://fonts.googleapis.com/css2?family=Cairo:wght@300;400;500;600;700;800;900&display=swap');

/* CSS Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Palette - Apple-inspired */
    --color-primary: #0071e3;
    --color-primary-dark: #0077ED;
    --color-text: #1d1d1f;
    --color-text-secondary: #6e6e73;
    --color-background: #ffffff;
    --color-background-alt: #f5f5f7;
    --color-border: #d2d2d7;

    /* Typography */
    --font-system: 'Cairo', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-base: 17px;
    --line-height-base: 1.5;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Transitions */
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.2s ease;
}

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

body {
    font-family: var(--font-system);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--color-text);
    background-color: var(--color-background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

/* Section Spacing */
.section {
    padding: var(--spacing-lg) 0;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.1;
}

/* Header / Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    transition: var(--transition-smooth);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 48px;
    padding: 0 var(--spacing-sm);
}

.nav__logo a {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    transition: var(--transition-fast);
}

.nav__logo-img {
    height: 36px;
    width: auto;
    display: block;
}

.nav__logo-text {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
    letter-spacing: -0.01em;
    white-space: nowrap;
    line-height: 1.2;
}

.nav__menu {
    display: none;
}

.nav__list {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.nav__link {
    color: var(--color-text);
    text-decoration: none;
    font-size: 0.875rem;
    transition: var(--transition-fast);
    opacity: 0.8;
}

.nav__link:hover {
    opacity: 1;
    color: var(--color-primary);
}

/* Mobile Menu Toggle */
.nav__toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.nav__toggle-icon,
.nav__toggle-icon::before,
.nav__toggle-icon::after {
    width: 20px;
    height: 2px;
    background-color: var(--color-text);
    border-radius: 2px;
    transition: var(--transition-smooth);
}

.nav__toggle-icon {
    position: relative;
}

.nav__toggle-icon::before,
.nav__toggle-icon::after {
    content: '';
    position: absolute;
    left: 0;
}

.nav__toggle-icon::before {
    top: -6px;
}

.nav__toggle-icon::after {
    top: 6px;
}

/* Mobile Menu Active State */
.nav__menu.active {
    display: block;
    position: absolute;
    top: 48px;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-sm) 0;
}

.nav__menu.active .nav__list {
    flex-direction: column;
    gap: 0;
}

.nav__menu.active .nav__item {
    border-bottom: 1px solid var(--color-border);
}

.nav__menu.active .nav__link {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 1rem;
}

/* Hero Section */
.hero {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: var(--spacing-xl) var(--spacing-sm);
    background-image: url('https://images.unsplash.com/photo-1661864667506-c8d0dbd59004?ixlib=rb-4.1.0&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&q=80&w=1170');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    color: #ffffff;
    text-align: center;
    margin-top: 48px;
    filter: grayscale(100%);
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.7) 0%, rgba(0, 0, 0, 0.5) 100%);
    z-index: 1;
}

.hero__content {
    max-width: 800px;
    animation: fadeInUp 1s ease-out;
    position: relative;
    z-index: 2;
}

.hero__title {
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.03em;
    line-height: 1.1;
}

.hero__subtitle {
    font-size: 1.25rem;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-lg);
    line-height: 1.4;
}

.hero__scroll {
    position: absolute;
    bottom: var(--spacing-md);
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
    animation: bounce 2s infinite;
    z-index: 2;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    border-radius: 980px;
    transition: var(--transition-smooth);
    cursor: pointer;
    border: none;
}

.btn--primary {
    background-color: var(--color-primary);
    color: #ffffff;
}

.btn--primary:hover {
    background-color: var(--color-primary-dark);
    transform: scale(1.02);
}

/* Section Headers */
.section__header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section__title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.section__subtitle {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    font-weight: 400;
}

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

.about__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.about__heading {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.about__text {
    font-size: 1.0625rem;
    line-height: 1.6;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
}

.about__image img {
    width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

/* Vision Grid */
.vision__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

.vision__card {
    background-color: var(--color-background-alt);
    padding: var(--spacing-lg);
    border-radius: 18px;
    transition: var(--transition-smooth);
}

.vision__card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.vision__icon {
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.vision__title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.vision__text {
    font-size: 1.0625rem;
    line-height: 1.6;
    color: var(--color-text-secondary);
}

/* Services Section */
.services {
    background-color: var(--color-background-alt);
}

.services__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

.service__card {
    background-color: var(--color-background);
    border-radius: 18px;
    overflow: hidden;
    transition: var(--transition-smooth);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.service__card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.service__image img {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.service__content {
    padding: var(--spacing-md);
}

.service__title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.service__description {
    font-size: 1.0625rem;
    line-height: 1.6;
    color: var(--color-text-secondary);
}

/* Chairman Section */
.chairman {
    background-color: var(--color-background);
}

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

.chairman__header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.chairman__image {
    margin-bottom: var(--spacing-lg);
}

.chairman__image img {
    width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.chairman__quote {
    border-left: 4px solid var(--color-primary);
    padding-left: var(--spacing-md);
}

.chairman__text {
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.chairman__text--emphasis {
    font-weight: 500;
    color: var(--color-text);
}

.chairman__signature {
    margin-top: var(--spacing-lg);
    font-size: 1.0625rem;
    line-height: 1.6;
    color: var(--color-text);
}

/* Contact Section */
.contact {
    background-color: var(--color-background-alt);
}

.contact__grid {
    max-width: 600px;
    margin: 0 auto;
}

.contact__info {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

.contact__item {
    background-color: var(--color-background);
    padding: var(--spacing-md);
    border-radius: 12px;
    text-align: center;
}

.contact__item h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text);
}

.contact__item p {
    font-size: 1.0625rem;
    color: var(--color-text-secondary);
}

.contact__item a {
    color: var(--color-primary);
    text-decoration: none;
    transition: var(--transition-fast);
}

.contact__item a:hover {
    opacity: 0.8;
}

/* Footer */
.footer {
    background-color: var(--color-text);
    color: rgba(255, 255, 255, 0.8);
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer__content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__logo-img {
    height: 40px;
    width: auto;
    display: block;
    margin-bottom: var(--spacing-sm);
}

.footer__logo p {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.6);
}

.footer__links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.footer__links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 0.9375rem;
    transition: var(--transition-fast);
}

.footer__links a:hover {
    color: #ffffff;
}

.footer__bottom {
    text-align: center;
}

.footer__bottom p {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.5);
}

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

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* Fade-in on scroll */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Tablet Styles (768px and up) */
@media screen and (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .section {
        padding: var(--spacing-xl) 0;
    }
    
    .nav__toggle {
        display: none;
    }
    
    .nav__menu {
        display: block;
    }

    .nav__logo a {
        gap: 12px;
    }

    .nav__logo-img {
        height: 40px;
    }

    .nav__logo-text {
        font-size: 1.125rem;
    }

    .hero__title {
        font-size: 3.5rem;
    }
    
    .hero__subtitle {
        font-size: 1.5rem;
    }
    
    .section__title {
        font-size: 3rem;
    }
    
    .about__grid {
        grid-template-columns: 1fr 1fr;
        align-items: center;
    }
    
    .vision__grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .services__grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .contact__info {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer__content {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
}

/* Desktop Styles (1024px and up) */
@media screen and (min-width: 1024px) {
    .nav__logo a {
        gap: 14px;
    }

    .nav__logo-img {
        height: 44px;
    }

    .nav__logo-text {
        font-size: 1.25rem;
    }

    .footer__logo-img {
        height: 50px;
    }

    .hero__title {
        font-size: 4.5rem;
    }

    .section__title {
        font-size: 3.5rem;
    }

    .service__image img {
        height: 300px;
    }
}