/* =========================================
   CSS Reset and Base Styles
   ========================================= */

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

:root {
    /* Primary Colors - Gray/Black Theme */
    --color-primary: #374151;
    --color-primary-dark: #1f2937;
    --color-primary-light: #4b5563;

    /* Neutral Colors */
    --color-white: #ffffff;
    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-400: #9ca3af;
    --color-gray-500: #6b7280;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-800: #1f2937;
    --color-gray-900: #111827;

    /* Accent Colors */
    --color-accent: #4b5563;
    --color-success: #10b981;
    --color-warning: #f59e0b;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Space Grotesk', var(--font-primary);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;

    /* Border Radius - All removed for sharp corners */
    --radius-sm: 0;
    --radius-md: 0;
    --radius-lg: 0;
    --radius-xl: 0;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-gray-700);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* =========================================
   Typography
   ========================================= */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-md);
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.875rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1.125rem; }

p {
    margin-bottom: var(--spacing-md);
}

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

a:hover {
    color: var(--color-primary-dark);
}

/* =========================================
   Container and Layout
   ========================================= */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

section {
    padding: var(--spacing-3xl) 0;
}

/* =========================================
   Navigation
   ========================================= */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all var(--transition-base);
}

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

.logo img {
    height: 60px;
    width: auto;
    max-width: 280px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-link {
    color: var(--color-gray-700);
    font-weight: 500;
    font-size: 0.9375rem;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link:not(.btn-primary):hover {
    color: var(--color-primary);
}

.nav-link:not(.btn-primary)::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: width var(--transition-base);
}

.nav-link:not(.btn-primary):hover::after {
    width: 100%;
}

/* Active navigation link */
.nav-link:not(.btn-primary).active {
    color: var(--color-primary);
    font-weight: 600;
}

.nav-link:not(.btn-primary).active::after {
    width: 100%;
}

/* Language Switcher */
.language-switcher {
    display: flex;
    gap: 4px;
    margin-left: var(--spacing-md);
    padding: 4px;
    background-color: var(--color-gray-100);
    border-radius: 0;
}

.lang-option {
    padding: 6px 12px;
    background: none;
    border: none;
    color: var(--color-gray-600);
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    border-radius: 0;
}

.lang-option:hover {
    color: var(--color-gray-900);
}

.lang-option.active {
    background-color: var(--color-gray-800);
    color: var(--color-white);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--color-gray-700);
    transition: all var(--transition-base);
}

/* =========================================
   Buttons
   ========================================= */

.btn {
    display: inline-block;
    padding: 0.75rem 1.75rem;
    font-weight: 600;
    font-size: 0.9375rem;
    text-align: center;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
    font-family: var(--font-primary);
}

.btn-primary {
    background-color: var(--color-gray-800);
    color: var(--color-white);
    box-shadow: 0 4px 14px 0 rgba(31, 41, 55, 0.25);
}

.btn-primary:hover {
    background-color: var(--color-gray-900);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px 0 rgba(31, 41, 55, 0.35);
}

.btn-secondary {
    background-color: var(--color-white);
    color: var(--color-gray-700);
    border: 2px solid var(--color-gray-200);
}

.btn-secondary:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-2px);
}

.btn-block {
    width: 100%;
}

/* =========================================
   Hero Section
   ========================================= */

.hero {
    padding-top: calc(var(--spacing-3xl) + 60px);
    padding-bottom: var(--spacing-3xl);
    background: linear-gradient(135deg, #f8faff 0%, #ffffff 100%);
    min-height: 90vh;
    display: flex;
    align-items: center;
    position: relative;
}

.hero-banner {
    position: absolute;
    top: 80px;
    left: 0;
    right: 0;
    width: 100%;
    height: 300px;
    overflow: hidden;
    z-index: 0;
}

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

.hero-banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.9));
    z-index: 10;
}

.hero .container {
    position: relative;
    z-index: 100;
    margin-top: 240px;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.hero-title {
    font-size: 3.4rem;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
    color: var(--color-gray-900);
}

.gradient-text {
    background: linear-gradient(135deg, var(--color-gray-800) 0%, var(--color-gray-900) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-xl);
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-2xl);
}

.hero-stats {
    display: flex;
    gap: var(--spacing-2xl);
    padding-top: var(--spacing-lg);
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary);
    font-family: var(--font-display);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-gray-500);
    font-weight: 500;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-main-image {
    width: 85%;
    max-width: 800px;
    height: auto;
    border-radius: 0;
    box-shadow: var(--shadow-xl);
}

/* =========================================
   Section Headers
   ========================================= */

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-3xl);
}

.section-tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: var(--color-gray-800);
    color: var(--color-white);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 0;
    margin-bottom: var(--spacing-md);
}

.section-title {
    font-size: 2.1rem;
    margin-bottom: var(--spacing-md);
}

.section-description {
    font-size: 1.125rem;
    color: var(--color-gray-600);
}

/* =========================================
   Services Section
   ========================================= */

.services {
    background-color: var(--color-white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.service-card {
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
}

.service-icon {
    width: 64px;
    height: 64px;
    background: var(--color-gray-800);
    border-radius: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
    color: var(--color-white);
}

.service-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-gray-900);
}

.service-description {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
}

.service-features {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
}

.service-features li {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    position: relative;
    padding-left: 1.5rem;
}

.service-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: 700;
}

/* =========================================
   Process Section
   ========================================= */

.process {
    background: linear-gradient(135deg, #f8faff 0%, #ffffff 100%);
}

.process-timeline {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    max-width: 1000px;
    margin: 0 auto;
}

.process-step {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    position: relative;
}

.step-number {
    width: 50px;
    height: 50px;
    background: var(--color-gray-800);
    color: var(--color-white);
    border-radius: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.125rem;
    font-weight: 700;
    font-family: var(--font-display);
    box-shadow: 0 4px 8px rgba(31, 41, 55, 0.3);
}

.step-content {
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-gray-200);
    flex: 1;
}

.step-content h3 {
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-sm);
    font-size: 1.125rem;
}

.step-content p {
    color: var(--color-gray-600);
    line-height: 1.6;
    margin-bottom: 0;
    font-size: 0.9rem;
}

/* =========================================
   Portfolio Section
   ========================================= */

.portfolio {
    background-color: var(--color-white);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.portfolio-card {
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-base);
}

.portfolio-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.portfolio-image {
    width: 100%;
    height: 250px;
    overflow: hidden;
}

.portfolio-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: 1.25rem;
    font-weight: 600;
}

.portfolio-content {
    padding: var(--spacing-xl);
}

.portfolio-tag {
    display: inline-block;
    padding: 0.375rem 0.75rem;
    background-color: var(--color-gray-100);
    color: var(--color-gray-800);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 0;
    margin-bottom: var(--spacing-sm);
}

.portfolio-content h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.portfolio-content p {
    color: var(--color-gray-600);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.portfolio-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.portfolio-tech span {
    padding: 0.375rem 0.75rem;
    background-color: var(--color-gray-100);
    color: var(--color-gray-700);
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 0;
}

/* =========================================
   About Section
   ========================================= */

.about {
    background: linear-gradient(135deg, #f8faff 0%, #ffffff 100%);
}

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

.about-text p {
    font-size: 1.125rem;
    color: var(--color-gray-600);
    line-height: 1.8;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}

.value-item {
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-gray-200);
}

.value-item h4 {
    color: var(--color-gray-800);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
}

.value-item p {
    color: var(--color-gray-600);
    font-size: 0.9375rem;
    margin-bottom: 0;
}

/* =========================================
   Contact Section
   ========================================= */

.contact {
    background-color: var(--color-white);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: start;
}

.contact-info h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.contact-info p {
    font-size: 1.125rem;
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-xl);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.contact-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: start;
}

.contact-item svg {
    flex-shrink: 0;
    color: var(--color-primary);
}

.contact-item h4 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
    color: var(--color-gray-900);
}

.contact-item p {
    color: var(--color-gray-600);
    margin-bottom: 0;
}

.contact-form-wrapper {
    background-color: var(--color-gray-50);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-gray-200);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-weight: 600;
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-xs);
    font-size: 0.875rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    padding: 0.75rem 1rem;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: all var(--transition-fast);
    background-color: var(--color-white);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* =========================================
   Footer
   ========================================= */

.footer {
    background-color: var(--color-gray-900);
    color: var(--color-gray-300);
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 2fr 1fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-section h4 {
    color: var(--color-white);
    font-size: 0.9375rem;
    margin-bottom: var(--spacing-md);
}

.footer-logo {
    height: 50px;
    width: auto;
    max-width: 220px;
    margin-bottom: var(--spacing-md);
    filter: brightness(1);
}

.footer-section p {
    color: var(--color-gray-400);
    font-size: 0.9375rem;
}

.footer-section ul {
    list-style: none;
    font-size: 0.9375rem;
}

.footer-section ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-section ul li a {
    color: var(--color-gray-400);
    transition: color var(--transition-fast);
}

.footer-section ul li a:hover {
    color: var(--color-white);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-links a {
    color: var(--color-gray-400);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-800);
    text-align: center;
}

.footer-bottom p {
    color: var(--color-gray-500);
    font-size: 0.875rem;
    margin-bottom: 0;
}

/* =========================================
   Responsive Design
   ========================================= */

@media (max-width: 1366px) {
    .hero-banner {
        height: 280px;
    }

    .hero .container {
        margin-top: 180px;
    }
}

@media (max-width: 1024px) {
    h1 { font-size: 3rem; }
    h2 { font-size: 2.25rem; }

    .hero-title {
        font-size: 3rem;
    }

    .hero-banner {
        height: 250px;
    }

    .hero .container {
        margin-top: 160px;
    }

    .services-grid,
    .portfolio-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
}

@media (max-width: 768px) {
    .language-switcher {
        order: -1;
        margin-left: auto;
        margin-right: var(--spacing-md);
    }

    .nav-menu {
        position: fixed;
        top: 60px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 60px);
        background-color: var(--color-white);
        flex-direction: column;
        align-items: flex-start;
        padding: var(--spacing-xl);
        box-shadow: var(--shadow-lg);
        transition: left var(--transition-base);
    }

    .nav-menu.active {
        left: 0;
    }

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

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

    .hero-image {
        display: none;
    }

    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .hero-stats {
        flex-wrap: wrap;
        gap: var(--spacing-lg);
    }

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

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

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

    .step-number {
        width: 45px;
        height: 45px;
        font-size: 1rem;
    }

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

    .step-content h3 {
        font-size: 1rem;
    }

    .step-content p {
        font-size: 0.85rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    section {
        padding: var(--spacing-2xl) 0;
    }

    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }

    .hero-title {
        font-size: 2rem;
    }

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

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

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

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

    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }
}

/* =========================================
   Animations
   ========================================= */

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

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* =========================================
   Utilities
   ========================================= */

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

.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }