/* ============================================
   MRK Web Development Agency - Main Stylesheet
   Modern, Professional, Creative-Tech Design
   ============================================ */

:root {
    /* Color Palette - Professional & Creative */
    --primary-dark: #0f172a;      /* Deep charcoal/navy */
    --primary-blue: #1e40af;      /* Deep blue */
    --secondary-blue: #2563eb;    /* Bright blue */
    --accent-cyan: #06b6d4;       /* Cyan accent */
    --accent-purple: #7c3aed;     /* Purple accent */
    
    --text-dark: #1a1f2e;         /* Dark text */
    --text-light: #64748b;        /* Light gray text */
    --text-lighter: #94a3b8;      /* Lighter gray text */
    
    --bg-light: #f8fafc;          /* Light background */
    --bg-white: #ffffff;          /* Pure white */
    --bg-gray: #f1f5f9;           /* Soft gray background */
    
    --border-light: #e2e8f0;      /* Light border */
    --border-medium: #cbd5e1;     /* Medium border */
    
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.15);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ============================================
   Global Styles
   ============================================ */

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--bg-light);
    color: var(--text-dark);
    line-height: 1.6;
    font-size: 16px;
}

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

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

.navbar {
    background: var(--bg-white);
    border-bottom: 1px solid var(--border-light);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

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

.navbar-brand .logo {
    font-size: 1.5rem;
    font-weight: 700;
    text-decoration: none;
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.logo-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    color: var(--text-dark);
}

.logo-img {
    height: 45px;
    width: auto;
    max-width: 180px;
    object-fit: contain;
}

/* Hide text when image is loaded */
.logo-img:not([style*="display: none"]) ~ .logo-text {
    display: none;
}

.navbar-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    position: relative;
    transition: color var(--transition-base);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-blue), var(--accent-cyan));
    transition: width var(--transition-base);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.btn-logout {
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    color: var(--bg-white) !important;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 6px;
    transition: all var(--transition-base);
}

.btn-logout:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    gap: 5px;
    padding: var(--spacing-sm);
    margin-left: auto;
    align-items: flex-end;
}

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

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

.hero {
    background: linear-gradient(135deg, var(--primary-dark) 0%, #1a3a5c 100%);
    color: var(--bg-white);
    padding: var(--spacing-2xl) var(--spacing-lg);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.1), transparent);
    border-radius: 50%;
}

.hero-overlay {
    position: relative;
    z-index: 2;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-content h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.hero-content h2 {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    font-weight: 400;
    color: var(--accent-cyan);
    margin-bottom: var(--spacing-xl);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition-base);
    display: inline-block;
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    color: var(--bg-white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: transparent;
    color: var(--bg-white);
    border: 2px solid var(--accent-cyan);
}

.btn-secondary:hover {
    background: var(--accent-cyan);
    color: var(--text-dark);
    transform: translateY(-3px);
}

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

.services {
    padding: var(--spacing-2xl) var(--spacing-lg);
    background: var(--bg-light);
}

.services h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-xl);
    text-align: center;
    color: var(--text-dark);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.service-card {
    background: var(--bg-white);
    padding: var(--spacing-xl);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    border: 1px solid var(--border-light);
}

.service-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-5px);
    border-color: var(--accent-cyan);
}

.service-icon {
    font-size: 2.5rem;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-md);
}

.service-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-dark);
}

.service-card p {
    color: var(--text-light);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.service-link {
    color: var(--primary-blue);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: all var(--transition-base);
}

.service-link:hover {
    color: var(--secondary-blue);
    gap: var(--spacing-sm);
}

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

.portfolio {
    padding: var(--spacing-2xl) var(--spacing-lg);
}

.portfolio h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-lg);
    text-align: center;
    color: var(--text-dark);
}

.portfolio-filters {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-2xl);
    flex-wrap: wrap;
}

.filter-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: 2px solid var(--border-medium);
    background: transparent;
    color: var(--text-dark);
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: all var(--transition-base);
    font-size: 0.95rem;
}

.filter-btn:hover,
.filter-btn.active {
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    color: var(--bg-white);
    border-color: var(--secondary-blue);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.portfolio-item {
    background: var(--bg-white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    cursor: pointer;
    border: 1px solid var(--border-light);
}

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

.portfolio-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.portfolio-item:hover .portfolio-image {
    transform: scale(1.05);
}

.portfolio-info {
    padding: var(--spacing-lg);
}

.portfolio-category {
    display: inline-block;
    background: var(--bg-gray);
    color: var(--primary-blue);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.portfolio-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-dark);
}

.portfolio-description {
    color: var(--text-light);
    font-size: 0.95rem;
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.portfolio-link {
    color: var(--accent-cyan);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: all var(--transition-base);
}

.portfolio-link:hover {
    gap: var(--spacing-sm);
}

/* ============================================
   Testimonials Section
   ============================================ */

.testimonials {
    padding: var(--spacing-2xl) var(--spacing-lg);
    background: var(--bg-gray);
}

.testimonials h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-xl);
    text-align: center;
    color: var(--text-dark);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.testimonial-card {
    background: var(--bg-white);
    padding: var(--spacing-lg);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    border-left: 4px solid var(--accent-cyan);
}

.testimonial-header {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    align-items: center;
}

.testimonial-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-cyan));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-white);
    font-weight: 700;
    font-size: 1.5rem;
}

.testimonial-name {
    font-weight: 600;
    color: var(--text-dark);
}

.testimonial-company {
    color: var(--text-light);
    font-size: 0.9rem;
}

.testimonial-rating {
    color: #fbbf24;
    margin-bottom: var(--spacing-md);
    font-size: 0.9rem;
}

.testimonial-text {
    color: var(--text-light);
    line-height: 1.7;
    font-style: italic;
}

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

.contact-form {
    max-width: 600px;
    margin: var(--spacing-2xl) auto;
    padding: var(--spacing-xl);
    background: var(--bg-white);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
}

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

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    color: var(--text-dark);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--border-light);
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    transition: all var(--transition-base);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

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

.form-submit {
    width: 100%;
    padding: var(--spacing-md);
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    color: var(--bg-white);
    border: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition-base);
}

.form-submit:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

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

.footer {
    background: var(--primary-dark);
    color: var(--bg-white);
    padding: var(--spacing-2xl) var(--spacing-lg) var(--spacing-lg);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-col h3,
.footer-col h4 {
    margin-bottom: var(--spacing-md);
    font-size: 1.1rem;
    color: var(--bg-white);
}

.footer-col p {
    color: #cbd5e1;
    line-height: 1.8;
    margin-bottom: var(--spacing-sm);
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-col a {
    color: #cbd5e1;
    text-decoration: none;
    transition: color var(--transition-base);
    font-weight: 500;
}

.footer-col a:hover {
    color: var(--accent-cyan);
}

.footer-social {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.footer-social a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    color: var(--accent-cyan);
    transition: all var(--transition-base);
}

.footer-social a:hover {
    background: var(--accent-cyan);
    color: var(--primary-dark);
    transform: translateY(-3px);
}

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

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    color: var(--accent-cyan);
    transition: all var(--transition-base);
}

.social-link:hover {
    background: var(--accent-cyan);
    color: var(--primary-dark);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-lg);
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    width: 100%;
}

.footer-copyright p {
    color: #94a3b8;
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: var(--spacing-lg);
    font-size: 0.95rem;
}

.footer-links a {
    color: #cbd5e1;
    text-decoration: none;
    transition: color var(--transition-base);
    font-weight: 500;
}

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

.footer-links .divider {
    color: #64748b;
}

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

@media (max-width: 768px) {
    .navbar-menu {
        gap: var(--spacing-md);
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background: var(--bg-white);
        flex-direction: column;
        padding: var(--spacing-lg);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
        max-height: calc(100vh - 60px);
        overflow-y: auto;
        display: none !important;
        align-items: flex-start;
        z-index: 999;
    }

    .navbar-menu.active {
        display: flex !important;
    }

    .navbar-menu li {
        width: 100%;
    }

    .nav-link {
        display: block;
        padding: var(--spacing-sm) var(--spacing-md);
        width: 100%;
        border-radius: 6px;
        transition: all 0.2s ease;
    }

    .nav-link:hover {
        background: var(--bg-gray);
        transform: translateX(8px);
    }

    .mobile-menu-toggle {
        display: flex;
        margin-left: auto;
        z-index: 1001;
    }

    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }

    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

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

    .hero-content h1 {
        font-size: 2rem;
    }

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

    .portfolio-filters {
        gap: var(--spacing-sm);
    }

    .filter-btn {
        font-size: 0.85rem;
        padding: var(--spacing-xs) var(--spacing-md);
    }

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

    .footer-bottom-content {
        flex-direction: column;
        text-align: center;
    }

    .footer-links {
        justify-content: center;
        gap: var(--spacing-md);
    }

    .btn-large {
        width: 100%;
    }
}

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

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

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

    .btn {
        padding: var(--spacing-md) var(--spacing-lg);
        width: 100%;
    }

    .services h2,
    .portfolio h2,
    .testimonials h2 {
        font-size: 1.75rem;
    }

    .navbar-menu.active {
        gap: var(--spacing-md);
    }
}

/* ============================================
   Loading Animation
   ============================================ */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease forwards;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* ============================================
   Admin Panel Styles
   ============================================ */

.admin-container {
    display: grid;
    grid-template-columns: 250px 1fr;
    min-height: 100vh;
    background: var(--bg-gray);
}

.admin-sidebar {
    background: var(--primary-dark);
    color: var(--bg-white);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
}

.admin-logo {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xl);
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.admin-nav {
    list-style: none;
}

.admin-nav-item {
    margin-bottom: var(--spacing-md);
}

.admin-nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    color: #cbd5e1;
    text-decoration: none;
    border-radius: 8px;
    transition: all var(--transition-base);
}

.admin-nav-link:hover,
.admin-nav-link.active {
    background: rgba(37, 99, 235, 0.2);
    color: var(--accent-cyan);
}

.admin-content {
    padding: var(--spacing-xl);
    overflow-y: auto;
}

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
}

.admin-title {
    font-size: 1.75rem;
    color: var(--text-dark);
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-white);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.admin-table thead {
    background: var(--bg-gray);
    font-weight: 600;
}

.admin-table th {
    padding: var(--spacing-md);
    text-align: left;
    color: var(--text-dark);
    border-bottom: 2px solid var(--border-light);
}

.admin-table td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-light);
    color: var(--text-light);
}

.admin-table tbody tr:hover {
    background: var(--bg-light);
}

.btn-edit,
.btn-delete {
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 6px;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    transition: all var(--transition-base);
    display: inline-block;
}

.btn-edit {
    background: #3b82f6;
    color: var(--bg-white);
}

.btn-edit:hover {
    background: #2563eb;
}

.btn-delete {
    background: #ef4444;
    color: var(--bg-white);
}

.btn-delete:hover {
    background: #dc2626;
}

.btn-secondary {
    background: var(--text-light);
    color: var(--bg-white);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition-base);
    display: inline-block;
}

.btn-secondary:hover {
    background: var(--text-dark);
}

.form-wrapper {
    max-width: 600px;
    background: var(--bg-white);
    padding: var(--spacing-xl);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
}

.alert {
    padding: var(--spacing-md);
    border-radius: 8px;
    margin-bottom: var(--spacing-lg);
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.alert-error {
    background: #fee2e2;
    color: #7f1d1d;
    border: 1px solid #fecaca;
}

.alert-info {
    background: #dbeafe;
    color: #0c2340;
    border: 1px solid #bfdbfe;
}

/* ============================================
   Login Page
   ============================================ */

.login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary-dark), #1a3a5c);
}

.login-card {
    background: var(--bg-white);
    padding: var(--spacing-2xl);
    border-radius: 16px;
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 400px;
}

.login-title {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-lg);
    text-align: center;
    color: var(--text-dark);
}

.login-card .form-group {
    margin-bottom: var(--spacing-lg);
}

.login-card input {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--border-light);
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    transition: all var(--transition-base);
}

.login-card input:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

.login-button {
    width: 100%;
    padding: var(--spacing-md);
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    color: var(--bg-white);
    border: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition-base);
}

.login-button:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.login-error {
    color: #ef4444;
    margin-bottom: var(--spacing-md);
    text-align: center;
    font-size: 0.9rem;
}

/* ============================================
   Page Sections - About, Services, Portfolio, Contact
   ============================================ */

/* Section Spacing */
section {
    padding: var(--spacing-2xl) var(--spacing-lg);
}

.section-heading {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-heading h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin-bottom: var(--spacing-md);
    color: var(--text-dark);
}

.section-heading p {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* About Page */
.about-section {
    background: var(--bg-light);
}

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

.about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-light);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.values-section,
.why-choose-section {
    background: var(--bg-white);
}

.value-card,
.why-card {
    background: var(--bg-light);
    padding: var(--spacing-xl);
    border-radius: 12px;
    text-align: center;
    transition: all var(--transition-base);
}

.value-card:hover,
.why-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.value-icon,
.why-icon {
    font-size: 3rem;
    color: var(--accent-cyan);
    margin-bottom: var(--spacing-md);
}

.value-card h3,
.why-card h3 {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-dark);
}

.value-card p,
.why-card p {
    color: var(--text-light);
    line-height: 1.6;
}

/* Services Page */
.services-intro-section {
    background: var(--bg-light);
}

.services-detail-section {
    background: var(--bg-white);
}

.service-detail-card {
    background: linear-gradient(135deg, var(--bg-white) 0%, var(--bg-light) 100%);
    padding: var(--spacing-xl);
    border-radius: 12px;
    transition: all var(--transition-base);
    border: 2px solid var(--border-light);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

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

.service-detail-card:hover {
    border-color: var(--accent-cyan);
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.service-icon-large {
    font-size: 3.5rem;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-lg);
    animation: float 3s ease-in-out infinite;
}

.service-features {
    list-style: none;
    margin: var(--spacing-lg) 0;
}

.service-features li {
    padding: var(--spacing-sm) 0;
    padding-left: var(--spacing-lg);
    color: var(--text-light);
    position: relative;
    font-weight: 500;
    transition: all var(--transition-base);
}

.service-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-cyan);
    font-weight: bold;
    font-size: 1.2rem;
}

.service-features li:hover {
    color: var(--text-dark);
    padding-left: calc(var(--spacing-lg) + 5px);
}

.card-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
    line-height: 1.3;
}

.card-description {
    font-size: 1rem;
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.service-benefits-section {
    background: var(--bg-light);
}

.benefit-card {
    background: var(--bg-white);
    padding: var(--spacing-xl);
    border-radius: 12px;
    text-align: center;
    transition: all var(--transition-base);
}

.benefit-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-5px);
}

.benefit-icon {
    font-size: 2.5rem;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-md);
}

/* Process Steps */
.process-section {
    background: var(--bg-light);
}

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

.process-step {
    background: var(--bg-white);
    padding: var(--spacing-xl);
    border-radius: 12px;
    text-align: center;
    position: relative;
}

.step-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-cyan));
    color: var(--bg-white);
    font-size: 1.5rem;
    font-weight: 700;
    border-radius: 50%;
    margin: 0 auto var(--spacing-lg);
}

.process-step h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-dark);
}

.process-step p {
    color: var(--text-light);
    line-height: 1.6;
}

/* Portfolio Page */
.portfolio-filters-section {
    background: var(--bg-white);
    padding: var(--spacing-xl) var(--spacing-lg);
}

.portfolio-filters {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    justify-content: center;
    margin-bottom: var(--spacing-2xl);
}

.filter-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--bg-light);
    color: var(--text-dark);
    border: 2px solid transparent;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition-base);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.filter-btn:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
}

.filter-btn.active {
    background: var(--primary-blue);
    color: var(--bg-white);
    border-color: var(--primary-blue);
}

.portfolio-card {
    overflow: hidden;
    transition: all var(--transition-base);
}

.card-image {
    position: relative;
    height: 250px;
    overflow: hidden;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-base);
}

.card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.portfolio-card:hover .card-overlay {
    opacity: 1;
}

.overlay-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: var(--accent-cyan);
    color: var(--bg-white);
    border-radius: 50%;
    font-size: 1.5rem;
    text-decoration: none;
    transition: all var(--transition-base);
}

.overlay-link:hover {
    background: var(--primary-blue);
    transform: scale(1.1);
}

.portfolio-grid-section {
    background: var(--bg-white);
}

.portfolio-stats-section {
    background: linear-gradient(135deg, var(--primary-dark) 0%, #1a3a5c 100%);
    color: var(--bg-white);
}

.stat-card {
    text-align: center;
    padding: var(--spacing-xl);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-cyan);
    margin-bottom: var(--spacing-sm);
}

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

/* Contact Page */
.contact-main-section {
    background: var(--bg-white);
}

.contact-form {
    background: var(--bg-light);
    padding: var(--spacing-xl);
    border-radius: 12px;
}

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

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    color: var(--text-dark);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--border-light);
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    transition: all var(--transition-base);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

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

.contact-info-cards {
    display: grid;
    gap: var(--spacing-lg);
}

.contact-info-card {
    background: var(--bg-light);
    padding: var(--spacing-lg);
    border-radius: 12px;
    display: flex;
    gap: var(--spacing-lg);
    align-items: flex-start;
}

.info-icon {
    font-size: 1.75rem;
    color: var(--primary-blue);
    min-width: 50px;
    text-align: center;
}

.info-content h3 {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-dark);
}

.info-content p {
    color: var(--text-light);
    margin: 0;
}

.info-content a {
    color: var(--primary-blue);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition-base);
}

.info-content a:hover {
    color: var(--accent-cyan);
}

.contact-social {
    background: var(--bg-light);
    padding: var(--spacing-lg);
    border-radius: 12px;
    text-align: center;
    margin-top: var(--spacing-xl);
}

.contact-social h3 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-lg);
    color: var(--text-dark);
}

.social-link-large {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: var(--primary-blue);
    color: var(--bg-white);
    border-radius: 50%;
    font-size: 1.3rem;
    text-decoration: none;
    transition: all var(--transition-base);
}

.social-link-large:hover {
    background: var(--accent-cyan);
    transform: translateY(-3px);
}

.why-contact-section {
    background: var(--bg-light);
}

.reason-card {
    background: var(--bg-white);
    padding: var(--spacing-xl);
    border-radius: 12px;
    text-align: center;
    transition: all var(--transition-base);
}

.reason-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-5px);
}

.reason-icon {
    font-size: 2.5rem;
    color: var(--accent-cyan);
    margin-bottom: var(--spacing-md);
}

.reason-card h3 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-dark);
}

.reason-card p {
    color: var(--text-light);
    line-height: 1.6;
}

.response-time-section {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
    color: var(--bg-white);
}

.response-content {
    text-align: center;
    padding: var(--spacing-2xl) var(--spacing-lg);
}

.response-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-lg);
}

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

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, var(--primary-dark) 0%, #1a3a5c 100%);
    color: var(--bg-white);
    padding: var(--spacing-2xl) var(--spacing-lg);
}

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

.cta-content h2 {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    margin-bottom: var(--spacing-lg);
}

.cta-content p {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-xl);
    color: var(--text-lighter);
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-2xl);
    font-size: 1.1rem;
}

/* Responsive Grid */
.grid-4 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

/* Alerts */
.alert {
    padding: var(--spacing-lg);
    border-radius: 8px;
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.alert i {
    font-size: 1.25rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.alert-error {
    background: #fee2e2;
    color: #7f1d1d;
    border: 1px solid #fecaca;
}

/* ============================================
   Responsive Design - Mobile First
   ============================================ */

@media (max-width: 768px) {
    /* Global */
    html {
        font-size: 16px;
    }
    
    body {
        font-size: 15px;
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
    
    /* Navigation Mobile */
    .navbar {
        padding: var(--spacing-md) 0;
    }

    .navbar-content {
        padding: var(--spacing-sm) 0;
    }

    .navbar-brand {
        gap: var(--spacing-sm);
    }

    .logo-img {
        height: 35px !important;
        width: auto;
        max-width: 140px;
    }

    .logo-text {
        font-size: 1rem;
    }

    .mobile-menu-toggle {
        padding: var(--spacing-sm);
    }    .mobile-menu-toggle {
        display: flex !important;
    }
    
    .navbar-menu {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background: var(--bg-white);
        flex-direction: column;
        padding: var(--spacing-lg) var(--spacing-md);
        box-shadow: var(--shadow-lg);
        max-height: calc(100vh - 60px);
        overflow-y: auto;
        transform: translateX(-100%);
        transition: transform var(--transition-base);
        z-index: 999;
    }
    
    .navbar-menu.active {
        transform: translateX(0);
    }
    
    .navbar-menu li {
        margin: var(--spacing-md) 0;
        border-bottom: 1px solid var(--border-light);
        padding-bottom: var(--spacing-md);
    }
    
    .navbar-menu li:last-child {
        border-bottom: none;
    }
    
    .nav-link {
        font-size: 1rem;
        display: block;
        padding: var(--spacing-md) 0;
    }
    
    /* Sections */
    section {
        padding: var(--spacing-xl) var(--spacing-md) !important;
    }
    
    /* Headings */
    h1 {
        font-size: clamp(1.75rem, 5vw, 2.5rem);
        line-height: 1.2;
    }
    
    h2 {
        font-size: clamp(1.5rem, 4vw, 2rem);
        line-height: 1.3;
    }
    
    h3 {
        font-size: 1.2rem;
        line-height: 1.4;
    }
    
    .section-heading h2 {
        font-size: 1.75rem;
        margin-bottom: var(--spacing-lg);
    }

    .section-heading p {
        font-size: 0.95rem;
    }
    
    /* Grids */
    .grid-4,
    .grid-3,
    .grid-2 {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    /* Cards */
    .card,
    .service-card,
    .portfolio-card,
    .testimonial-card,
    .value-card,
    .why-card {
        padding: var(--spacing-lg);
        border-radius: 12px;
        margin-bottom: var(--spacing-md);
    }
    
    /* Buttons */
    .btn {
        padding: 0.875rem 1.5rem;
        font-size: 0.95rem;
        width: auto;
        display: inline-block;
        text-align: center;
    }
    
    .btn-primary,
    .btn-secondary,
    .btn-outline {
        padding: 0.875rem 1.75rem;
        font-size: 1rem;
    }
    
    .btn-lg {
        padding: 1rem 2rem;
        font-size: 1rem;
    }
    
    /* Forms */
    input[type="text"],
    input[type="email"],
    input[type="phone"],
    input[type="textarea"],
    textarea,
    select {
        width: 100%;
        padding: 0.875rem;
        font-size: 1rem;
        margin-bottom: var(--spacing-md);
        border-radius: 8px;
    }
    
    .form-group {
        margin-bottom: var(--spacing-lg);
    }
    
    .form-row {
        flex-direction: column;
    }
    
    .form-col {
        width: 100%;
        margin-bottom: var(--spacing-md);
    }

    /* Contact Info Cards */
    .contact-info-card {
        flex-direction: column;
        text-align: center;
        padding: var(--spacing-lg);
    }

    .info-icon {
        text-align: center;
        min-width: unset;
        margin-bottom: var(--spacing-md);
    }

    /* Process Steps */
    .process-step,
    .value-card,
    .why-card {
        padding: var(--spacing-lg);
    }

    /* Portfolio Filters */
    .portfolio-filters {
        gap: var(--spacing-sm);
        flex-wrap: wrap;
        justify-content: center;
    }

    .filter-btn {
        padding: 0.75rem 1.25rem;
        font-size: 0.9rem;
        white-space: nowrap;
    }
    
    /* Hero Section */
    .hero-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }
    
    .stat-item {
        padding: var(--spacing-md);
    }
    
    .stat-number {
        font-size: 1.5rem;
    }

    .stat-label {
        font-size: 0.85rem;
    }
    
    /* Icons */
    .value-icon,
    .why-icon,
    .benefit-icon,
    .reason-icon,
    .card-icon {
        font-size: 2rem;
    }

    .service-icon-large {
        font-size: 2.5rem;
    }
    
    /* Footer */
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .footer-col {
        padding-bottom: var(--spacing-lg);
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .footer-col:last-child {
        border-bottom: none;
    }
    
    .footer-social {
        justify-content: center;
        margin-top: var(--spacing-lg);
    }
    
    .footer-bottom-content {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
    }
    
    /* Spacing adjustments */
    .margin-bottom {
        margin-bottom: var(--spacing-lg);
    }
}

@media (max-width: 480px) {
    /* Extra small devices */
    html {
        font-size: 15px;
    }
    
    body {
        font-size: 14px;
        line-height: 1.5;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    /* Navigation */
    .navbar-content {
        padding: var(--spacing-sm) 0;
    }

    .navbar-brand {
        gap: 0.25rem;
    }

    .logo-text {
        font-size: 0.85rem;
    }

    .logo-img {
        height: 28px !important;
        max-width: 110px;
    }

    .mobile-menu-toggle {
        padding: var(--spacing-xs);
    }    /* Headings */
    h1 {
        font-size: 1.5rem;
    }
    
    h2 {
        font-size: 1.3rem;
    }
    
    h3 {
        font-size: 1.1rem;
    }
    
    p {
        font-size: 0.95rem;
        line-height: 1.6;
    }
    
    section {
        padding: var(--spacing-lg) var(--spacing-sm) !important;
    }
    
    .section-heading h2 {
        font-size: 1.5rem;
        margin-bottom: var(--spacing-md);
    }

    .section-heading p {
        font-size: 0.9rem;
    }
    
    /* Grids */
    .grid-4,
    .grid-3,
    .grid-2 {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    /* Cards */
    .card,
    .service-card,
    .service-detail-card,
    .portfolio-card,
    .testimonial-card,
    .value-card,
    .why-card {
        padding: var(--spacing-md);
    }

    .service-detail-card {
        padding: var(--spacing-lg);
    }

    .card-title {
        font-size: 1.25rem;
    }

    .card-description {
        font-size: 0.95rem;
    }

    .service-icon-large {
        font-size: 3rem;
    }

    .service-features li {
        padding: var(--spacing-xs) 0;
        padding-left: var(--spacing-md);
        font-size: 0.9rem;
    }
    
    /* Buttons */
    .btn {
        padding: 0.75rem 1.25rem;
        font-size: 0.9rem;
    }
    
    .btn-lg {
        padding: 0.875rem 1.5rem;
        font-size: 0.95rem;
    }
    
    /* Forms */
    input,
    textarea,
    select {
        padding: 0.75rem;
        font-size: 1rem;
        margin-bottom: var(--spacing-md);
    }
    
    /* Stats */
    .hero-stats {
        grid-template-columns: 1fr;
    }
    
    .stat-number {
        font-size: 1.25rem;
    }

    .stat-label {
        font-size: 0.8rem;
    }
    
    /* Icons */
    .value-icon,
    .why-icon,
    .benefit-icon,
    .reason-icon {
        font-size: 1.75rem;
    }

    .card-icon {
        font-size: 1.75rem;
    }

    .service-icon-large {
        font-size: 2rem;
    }
    
    /* Text adjustments */
    .text-center {
        text-align: center;
    }
    
    /* Hero buttons */
    .hero-buttons {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .hero-buttons .btn {
        width: 100%;
    }
    
    /* CTA buttons */
    .cta-buttons {
        flex-direction: column;
    }
    
    .cta-buttons .btn {
        width: 100%;
        margin-bottom: var(--spacing-md);
    }
    
    /* Footer */
    .footer-grid {
        gap: var(--spacing-lg);
    }
    
    .footer-col {
        text-align: center;
    }
    
    .footer-col h3,
    .footer-col h4 {
        font-size: 1rem;
    }
    
    .footer-col ul {
        display: flex;
        justify-content: center;
        gap: var(--spacing-lg);
        flex-wrap: wrap;
        margin-top: var(--spacing-md);
    }
    
    .footer-col ul li {
        margin-bottom: 0;
    }
    
    .footer-bottom-content {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-md);
    }
    
    .footer-links {
        justify-content: center;
    }
    
    /* Tables */
    table {
        font-size: 0.85rem;
    }
    
    thead {
        font-size: 0.8rem;
    }
    
    /* Lists */
    ul, ol {
        margin-left: var(--spacing-md);
    }
    
    li {
        margin-bottom: var(--spacing-sm);
    }
}