/* ========================================
   DIGITAL DESIGN - Professional Agency Site
   ======================================== */

/* Reset & Variables */
:root {
    --primary-dark: #0f172a;
    --primary-blue: #1e40af;
    --accent-blue: #3b82f6;
    --light-text: #f8fafc;
    --medium-text: #e2e8f0;
    --muted-text: #94a3b8;
    --dark-text: #1e293b;
    --border-color: #334155;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    --spacing-2xl: 6rem;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --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);
}

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

html {
    scroll-behavior: smooth;
}

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

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

/* ========== NAVBAR ========== */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-sm) 0;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #3b82f6 0%, #60a5fa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-links a {
    color: var(--light-text);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
}

.nav-links a:hover {
    color: var(--accent-blue);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-blue);
    transition: width 0.3s ease;
}

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

.cta-link {
    background: var(--accent-blue);
    color: white !important;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 6px;
    transition: var(--transition);
}

.cta-link:hover {
    background: var(--primary-blue);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.cta-link::after {
    display: none;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    gap: 5px;
}

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

/* ========== HERO ========== */
.hero {
    padding: var(--spacing-2xl) 0;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    text-align: center;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, #f8fafc 0%, #cbd5e1 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--muted-text);
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

/* ========== BUTTONS ========== */
.btn {
    padding: 0.875rem 2rem;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    font-size: 1rem;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    color: white;
    box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 20px 25px -5px rgba(59, 130, 246, 0.3);
}

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

.btn-secondary:hover {
    background: var(--accent-blue);
    color: white;
}

/* ========== SECTION HEADER ========== */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, #f8fafc 0%, #cbd5e1 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-header p {
    font-size: 1.125rem;
    color: var(--muted-text);
    max-width: 500px;
    margin: 0 auto;
}

/* ========== SERVICES ========== */
.services {
    padding: var(--spacing-2xl) 0;
    background: var(--primary-dark);
}

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

.service-card {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, #2d3748 100%);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: var(--spacing-lg);
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #3b82f6 0%, #60a5fa 100%);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.service-card:hover {
    border-color: var(--accent-blue);
    background: linear-gradient(135deg, #1e3a5f 0%, #1e293b 100%);
    transform: translateY(-6px);
}

.service-card:hover::before {
    transform: scaleX(1);
}

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

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

.service-card p {
    color: var(--muted-text);
    font-size: 0.95rem;
    line-height: 1.8;
}

/* ========== PORTFOLIO ========== */
.portfolio {
    padding: var(--spacing-2xl) 0;
    background: linear-gradient(180deg, var(--primary-dark) 0%, var(--bg-secondary) 100%);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: var(--spacing-lg);
}

.portfolio-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition);
}

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

.portfolio-image {
    width: 100%;
    height: 220px;
    background-size: cover;
    background-position: center;
    transition: var(--transition);
}

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

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

.portfolio-content h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
}

.portfolio-meta {
    color: var(--accent-blue);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.portfolio-content p {
    color: var(--muted-text);
    margin-bottom: var(--spacing-md);
    font-size: 0.95rem;
    line-height: 1.8;
}

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

.portfolio-tags span {
    background: var(--bg-tertiary);
    color: var(--accent-blue);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

/* ========== ABOUT ========== */
.about {
    padding: var(--spacing-2xl) 0;
    background: var(--primary-dark);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.about-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, #f8fafc 0%, #cbd5e1 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-content p {
    color: var(--muted-text);
    margin-bottom: var(--spacing-md);
    font-size: 1rem;
    line-height: 1.8;
}

.about-features {
    display: flex;
    gap: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
}

.feature {
    flex: 1;
}

.feature-number {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #3b82f6 0%, #60a5fa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.feature p {
    color: var(--muted-text);
    font-size: 0.95rem;
}

.image-placeholder {
    width: 100%;
    height: 400px;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: var(--muted-text);
}

/* ========== TESTIMONIALS ========== */
.testimonials {
    padding: var(--spacing-2xl) 0;
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--primary-dark) 100%);
}

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

.testimonial-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: var(--spacing-lg);
    transition: var(--transition);
}

.testimonial-card:hover {
    border-color: var(--accent-blue);
    transform: translateY(-6px);
}

.rating {
    color: #fbbf24;
    font-size: 1rem;
    margin-bottom: var(--spacing-md);
    letter-spacing: 2px;
}

.testimonial-text {
    color: var(--light-text);
    margin-bottom: var(--spacing-lg);
    font-style: italic;
    line-height: 1.8;
    font-size: 0.95rem;
}

.testimonial-author {
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

.author-info {
    margin: 0;
}

.author-name {
    font-weight: 600;
    color: var(--light-text);
    margin-bottom: 4px;
}

.author-role {
    color: var(--muted-text);
    font-size: 0.875rem;
}

/* ========== CTA SECTION ========== */
.cta-section {
    padding: var(--spacing-2xl) 0;
    background: linear-gradient(135deg, #1e3a8a 0%, #1e40af 100%);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.cta-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
}

.cta-content p {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.95;
}

.cta-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.form-group {
    display: flex;
}

.cta-form input {
    flex: 1;
    padding: 0.875rem var(--spacing-md);
    border: none;
    border-radius: 8px;
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    background: rgba(255, 255, 255, 0.95);
    color: var(--dark-text);
    transition: var(--transition);
}

.cta-form input:focus {
    outline: none;
    background: white;
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.2);
}

.cta-form button {
    margin-top: var(--spacing-md);
}

.form-note {
    font-size: 0.875rem;
    opacity: 0.9;
}

/* ========== FOOTER ========== */
.footer {
    background: linear-gradient(180deg, #0f172a 0%, #000 100%);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

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

.footer-column h4 {
    font-size: 1rem;
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

.footer-column p {
    color: var(--muted-text);
    font-size: 0.95rem;
    line-height: 1.8;
}

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

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

.footer-column a {
    color: var(--muted-text);
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.95rem;
}

.footer-column a:hover {
    color: var(--accent-blue);
}

.footer-bottom {
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-bottom p {
    color: var(--muted-text);
    font-size: 0.875rem;
}

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

.footer-links a {
    color: var(--muted-text);
    text-decoration: none;
    font-size: 0.875rem;
    transition: var(--transition);
}

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

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
    :root {
        font-size: 15px;
    }

    .nav-links {
        display: none;
    }

    .menu-toggle {
        display: flex;
    }

    .nav-links.active {
        display: flex;
        position: absolute;
        top: 60px;
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--bg-secondary);
        padding: var(--spacing-md);
        gap: var(--spacing-md);
        border-bottom: 1px solid var(--border-color);
    }

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

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-buttons {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .hero-buttons .btn {
        width: 100%;
    }

    .section-header h2 {
        font-size: 2rem;
    }

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

    .about-features {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .footer-bottom,
    .footer-links {
        justify-content: center;
        text-align: center;
    }

    .cta-form {
        flex-direction: column;
    }

    .cta-form input {
        width: 100%;
    }
}

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

    .hero {
        padding: var(--spacing-xl) 0;
    }

    .hero h1 {
        font-size: 1.75rem;
    }

    .hero-subtitle {
        font-size: 0.95rem;
    }

    .section-header h2 {
        font-size: 1.5rem;
    }

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

    .about-features {
        flex-direction: row;
        justify-content: space-around;
    }

    .feature {
        text-align: center;
    }
}

/* Animation */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.service-card,
.portfolio-card,
.testimonial-card {
    animation: fadeInUp 0.6s ease-out forwards;
}