/* CSS Variables */
:root {
    /* Colors */
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary-color: #1f2937;
    --accent-color: #10b981;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    --background: #ffffff;
    --background-alt: #f9fafb;
    --border-color: #e5e7eb;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --shadow-hover: rgba(0, 0, 0, 0.15);
    
    /* Typography */
    --font-family: 'Vazirmatn', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Container */
    --container-max-width: 1200px;
    --container-padding: 1rem;
}

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

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

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background);
    direction: rtl;
    text-align: right;
    overflow-x: hidden;
}

/* Container */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-size: var(--font-size-base);
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
    cursor: pointer;
    border: 2px solid transparent;
    min-width: 140px;
    text-align: center;
}

.btn--primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.2);
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.3);
}

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

.btn--outline:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.2);
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: all var(--transition-normal);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 20px var(--shadow-color);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
}

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

.nav__logo {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
}

.nav__title {
    font-size: var(--font-size-xl);
    font-weight: 800;
    color: var(--primary-color);
    margin: 0;
}

.nav__menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    margin: 0;
}

.nav__link {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    position: relative;
}

.nav__link:hover,
.nav__link.active {
    color: var(--primary-color);
    background: rgba(37, 99, 235, 0.1);
}

.nav__toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 0.5rem;
}

.nav__toggle span {
    width: 24px;
    height: 3px;
    background: var(--text-primary);
    margin: 2px 0;
    transition: var(--transition-normal);
    border-radius: 2px;
}

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

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

.nav__toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    overflow: hidden;
}

.hero__container {
    position: relative;
    z-index: 2;
    padding: 8rem 0 4rem;
}

.hero__content {
    max-width: 600px;
    margin-right: auto;
}

.hero__title {
    margin-bottom: 1.5rem;
}

.hero__title-main {
    display: block;
    font-size: var(--font-size-5xl);
    font-weight: 900;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero__title-sub {
    display: block;
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--text-secondary);
}

.hero__description {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero__buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.hero__stats {
    display: flex;
    gap: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.stat {
    text-align: center;
}

.stat__number {
    display: block;
    font-size: var(--font-size-2xl);
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 0.25rem;
}

.stat__label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.hero__decoration {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
    overflow: hidden;
}

.decoration-circle {
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(29, 78, 216, 0.05));
    animation: float 6s ease-in-out infinite;
}

.decoration-circle--1 {
    width: 200px;
    height: 200px;
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.decoration-circle--2 {
    width: 150px;
    height: 150px;
    top: 60%;
    left: 20%;
    animation-delay: 2s;
}

.decoration-circle--3 {
    width: 100px;
    height: 100px;
    top: 30%;
    left: 5%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

/* Section Styles */
section {
    padding: var(--spacing-3xl) 0;
}

.section__header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section__title {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    position: relative;
}

.section__title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    right: 50%;
    transform: translateX(50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 2px;
}

.section__description {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

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

.services__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service__card {
    background: white;
    padding: 2rem;
    border-radius: var(--radius-xl);
    box-shadow: 0 4px 20px var(--shadow-color);
    transition: all var(--transition-normal);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.service__card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    left: 0;
    height: 4px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
}

.service__card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 40px var(--shadow-hover);
}

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

.service__icon svg {
    width: 40px;
    height: 40px;
}

.service__title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.service__description {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Portfolio Section */
.portfolio__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.portfolio__item {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: white;
    box-shadow: 0 4px 20px var(--shadow-color);
    transition: all var(--transition-normal);
}

.portfolio__item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 40px var(--shadow-hover);
}

.portfolio__image {
    position: relative;
    width: 100%;
    height: 240px;
    overflow: hidden;
    background: linear-gradient(135deg, #f8fafc, #e2e8f0);
    display: flex;
    align-items: center;
    justify-content: center;
}

.portfolio__image::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    border: 3px solid var(--primary-color);
    border-top-color: transparent;
    border-radius: 50%;
    animation: portfolio-loading 1s linear infinite;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.portfolio__image.loading::before {
    opacity: 1;
}

.portfolio__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center;
    transition: all var(--transition-slow);
    opacity: 0;
    transform: scale(1.1);
}

.portfolio__image img.loaded {
    opacity: 1;
    transform: scale(1);
}

@keyframes portfolio-loading {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

.portfolio__overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(37, 99, 235, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all var(--transition-normal);
}

.portfolio__item:hover .portfolio__overlay {
    opacity: 1;
}

.portfolio__view {
    background: white;
    color: var(--primary-color);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all var(--transition-normal);
}

.portfolio__view:hover {
    transform: scale(1.05);
}

.portfolio__view svg {
    width: 20px;
    height: 20px;
}

.portfolio__more {
    text-align: center;
    margin-top: var(--spacing-xl);
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    padding: 2rem;
    box-sizing: border-box;
}

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

.modal__overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.9);
}

.modal__content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    max-width: 95vw;
    max-height: 95vh;
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
}

.modal__close {
    position: absolute;
    top: 1rem;
    left: 1rem;
    width: 45px;
    height: 45px;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
    backdrop-filter: blur(10px);
}

.modal__close:hover {
    background: rgba(0, 0, 0, 0.95);
    transform: scale(1.1);
}

.modal__image {
    width: 100%;
    max-height: 85vh;
    object-fit: contain;
    object-position: center;
    display: block;
    background: #f8fafc;
}

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

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

.about__text .section__title {
    text-align: right;
    margin-bottom: 1.5rem;
}

.about__text .section__title::after {
    right: 0;
    transform: none;
}

.about__description {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 2rem;
}

.about__features {
    list-style: none;
    margin-bottom: 2rem;
}

.about__feature {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    font-weight: 500;
}

.about__feature svg {
    width: 20px;
    height: 20px;
    color: var(--accent-color);
    flex-shrink: 0;
}

.about__stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.stat-card {
    background: white;
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: 0 4px 20px var(--shadow-color);
    transition: all var(--transition-normal);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 40px var(--shadow-hover);
}

.stat-card__number {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-card__label {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

/* Contact Section */
.contact__content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact__info .section__title {
    text-align: right;
    margin-bottom: 1.5rem;
}

.contact__info .section__title::after {
    right: 0;
    transform: none;
}

.contact__description {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 2rem;
}

.contact__phone {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 1.5rem 2rem;
    border-radius: var(--radius-xl);
    box-shadow: 0 4px 20px rgba(37, 99, 235, 0.2);
    transition: all var(--transition-normal);
}

.contact__phone:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(37, 99, 235, 0.3);
}

.contact__phone-icon {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact__phone-icon svg {
    width: 24px;
    height: 24px;
}

.contact__phone-number {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: white;
    text-decoration: none;
    direction: ltr;
}

.contact__links h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.contact__nav {
    list-style: none;
}

.contact__nav li {
    margin-bottom: 0.75rem;
}

.contact__nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 0;
    display: block;
    transition: all var(--transition-normal);
    border-right: 3px solid transparent;
    padding-right: 1rem;
}

.contact__nav a:hover {
    color: var(--primary-color);
    border-right-color: var(--primary-color);
    padding-right: 1.5rem;
}

/* Footer */
.footer {
    background: var(--secondary-color);
    color: white;
    padding: var(--spacing-2xl) 0 var(--spacing-md);
}

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

.footer__logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.footer__logo img {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
}

.footer__logo span {
    font-size: var(--font-size-xl);
    font-weight: 800;
    color: white;
}

.footer__description {
    color: #d1d5db;
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.footer__links h4,
.footer__contact h4 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: 1rem;
    color: white;
}

.footer__links ul {
    list-style: none;
}

.footer__links li {
    margin-bottom: 0.5rem;
}

.footer__links a {
    color: #d1d5db;
    text-decoration: none;
    transition: all var(--transition-normal);
}

.footer__links a:hover {
    color: white;
}

.footer__phone {
    display: inline-block;
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: white;
    text-decoration: none;
    margin-bottom: 1rem;
    direction: ltr;
}

.footer__zi9 {
    color: #d1d5db;
}

.footer__zi9 a {
    color: var(--primary-light);
    text-decoration: none;
}

.footer__zi9 a:hover {
    text-decoration: underline;
}

.footer__bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #374151;
    color: #9ca3af;
}

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        --font-size-5xl: 2.5rem;
        --font-size-4xl: 2rem;
        --font-size-3xl: 1.5rem;
        --container-padding: 1rem;
    }

    .nav__menu {
        position: fixed;
        top: 100%;
        right: 0;
        left: 0;
        background: white;
        flex-direction: column;
        padding: 2rem 1rem;
        box-shadow: 0 4px 20px var(--shadow-color);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
    }

    .nav__menu.show-menu {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav__toggle {
        display: flex;
    }

    .hero__content {
        margin: 0;
        text-align: center;
    }

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

    .hero__stats {
        justify-content: space-around;
        flex-wrap: wrap;
        gap: 1rem;
    }

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

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

    .portfolio__image {
        height: 200px;
    }

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

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

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

    .footer__content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .decoration-circle--1,
    .decoration-circle--2,
    .decoration-circle--3 {
        display: none;
    }

    .modal {
        padding: 1rem;
    }

    .modal__content {
        max-width: 100%;
        max-height: 90vh;
    }

    .modal__image {
        max-height: 70vh;
    }
}

@media (max-width: 480px) {
    .hero__title-main {
        font-size: var(--font-size-4xl);
    }
    
    .hero__title-sub {
        font-size: var(--font-size-xl);
    }
    
    .section__title {
        font-size: var(--font-size-2xl);
    }
}

/* Performance Optimizations */
img {
    max-width: 100%;
    height: auto;
}

/* Lazy loading styles */
img[loading="lazy"] {
    opacity: 0;
    transition: opacity var(--transition-normal);
}

img[loading="lazy"].loaded {
    opacity: 1;
}

/* Print styles */
@media print {
    .header,
    .nav__toggle,
    .hero__decoration,
    .modal {
        display: none !important;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
    }
}