/* ===== CSS Variables ===== */
:root {
    --color-bg: #ffffff;
    --color-bg-elevated: #f7faf9;
    --color-bg-card: #ffffff;
    --color-bg-card-hover: #f0f7f5;
    --color-surface: #edf3f1;
    --color-border: #e2e8e6;
    --color-border-light: #d0dbd8;

    --color-text: #0E1E3C;
    --color-text-secondary: #4a5e6d;
    --color-text-muted: #7a8e9a;

    --color-primary: #3EC2A7;
    --color-primary-light: #2ea88f;
    --color-primary-dark: #258a75;
    --color-primary-glow: rgba(62, 194, 167, 0.08);

    --color-accent: #0E1E3C;
    --color-accent-glow: rgba(14, 30, 60, 0.06);

    --gradient-primary: linear-gradient(135deg, #2ea88f, #3EC2A7);
    --gradient-bg: linear-gradient(180deg, #ffffff 0%, #f7faf9 100%);

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    --shadow-sm: 0 2px 8px rgba(14, 30, 60, 0.06);
    --shadow-md: 0 4px 24px rgba(14, 30, 60, 0.08);
    --shadow-lg: 0 8px 48px rgba(14, 30, 60, 0.12);
    --shadow-glow: 0 0 40px rgba(62, 194, 167, 0.1);

    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
}

/* ===== Reset & Base ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-sans);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
}

/* ===== Container ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Section ===== */
.section {
    padding: 120px 0;
}

.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 64px;
}

.section-tag {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-primary);
    margin-bottom: 16px;
}

.section-header h2 {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 16px;
}

.section-description {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: var(--font-sans);
    font-size: 15px;
    font-weight: 500;
    padding: 10px 24px;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-accent);
    color: #fff;
    box-shadow: 0 2px 12px rgba(14, 30, 60, 0.15);
}

.btn-primary:hover {
    box-shadow: 0 4px 24px rgba(14, 30, 60, 0.2);
    transform: translateY(-1px);
    background: #0a1630;
}

.btn-outline {
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border-light);
}

.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary-dark);
    background: var(--color-primary-glow);
}

.btn-lg {
    padding: 14px 32px;
    font-size: 16px;
    border-radius: var(--radius-md);
}

.btn-full {
    width: 100%;
}

.btn-nav {
    padding: 10px 24px;
    background: var(--color-accent);
    color: #fff !important;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    border: none;
}

.btn-nav:hover {
    color: #fff !important;
    background: #0a1630;
    box-shadow: 0 2px 16px rgba(14, 30, 60, 0.2);
}

/* ===== Navigation ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: all var(--transition-base);
    background: transparent;
}

.nav.scrolled {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    padding: 12px 0;
}

.nav.scrolled .logo-img {
    width: 160px;
}

.nav-container {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
}

.logo-img {
    width: 180px;
    height: auto;
}

@media (min-width: 769px) {
    .logo-img {
        width: 220px;
    }
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 36px;
    list-style: none;
}

.nav-links a {
    font-size: 15px;
    font-weight: 400;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: all var(--transition-base);
}

/* ===== Hero ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 60% 50% at 50% 0%, rgba(62, 194, 167, 0.06), transparent),
        radial-gradient(ellipse 40% 40% at 80% 20%, rgba(14, 30, 60, 0.03), transparent);
    pointer-events: none;
}

.hero-container {
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 780px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    padding: 6px 16px;
    background: rgba(62, 194, 167, 0.08);
    border: 1px solid rgba(62, 194, 167, 0.2);
    border-radius: 100px;
    font-size: 13px;
    font-weight: 500;
    color: var(--color-primary-dark);
    margin-bottom: 24px;
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: 24px;
}

.text-gradient {
    color: var(--color-primary);
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    max-width: 600px;
    margin-bottom: 36px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 64px;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 32px;
}

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

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

.stat-label {
    font-size: 13px;
    color: var(--color-text-muted);
    font-weight: 400;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--color-border-light);
}

/* ===== Services ===== */
.services {
    background: var(--color-bg-elevated);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.service-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 36px;
    transition: all var(--transition-base);
}

.service-card:hover {
    background: var(--color-bg-card-hover);
    border-color: var(--color-border-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.service-icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(62, 194, 167, 0.1);
    border-radius: var(--radius-md);
    color: var(--color-primary-dark);
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.service-card p {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    line-height: 1.65;
}

/* ===== About ===== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-content .section-tag {
    text-align: left;
}

.about-content h2 {
    font-size: clamp(1.75rem, 3.5vw, 2.5rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
}

.about-content p {
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

.about-highlights {
    margin-top: 32px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.highlight {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.95rem;
}

.highlight-icon {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(62, 194, 167, 0.12);
    border-radius: 50%;
    color: var(--color-primary-dark);
    flex-shrink: 0;
}

.about-visual {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.tech-stack {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 36px;
}

.tech-stack h4 {
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--color-text-muted);
    margin-bottom: 20px;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tech-tag {
    display: inline-flex;
    padding: 8px 16px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 100px;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.tech-tag:hover {
    border-color: var(--color-primary);
    color: var(--color-primary-dark);
    background: rgba(62, 194, 167, 0.08);
}

/* ===== Team ===== */
.team {
    background: var(--color-bg-elevated);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.team-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    text-align: center;
    transition: all var(--transition-base);
}

.team-card:hover {
    border-color: var(--color-border-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.team-avatar {
    margin-bottom: 24px;
    display: flex;
    justify-content: center;
}

.avatar-placeholder {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: 1px;
}

.team-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.team-role {
    font-size: 14px;
    color: var(--color-primary);
    font-weight: 500;
    display: block;
    margin-bottom: 16px;
}

.team-card p {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.65;
    margin-bottom: 20px;
}

.team-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px;
    margin-bottom: 20px;
}

.team-tags span {
    padding: 4px 12px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 100px;
    font-size: 12px;
    color: var(--color-text-muted);
}

.team-linkedin {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.team-linkedin:hover {
    color: #0a66c2;
}

/* ===== Portfolio ===== */
.portfolio {
    background: var(--color-bg-elevated);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}

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

.portfolio-card:hover {
    border-color: var(--color-border-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.portfolio-preview {
    position: relative;
    height: 200px;
    background: linear-gradient(135deg, var(--color-surface) 0%, var(--color-bg-elevated) 100%);
    border-bottom: 1px solid var(--color-border);
}

.portfolio-preview-placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    opacity: 0.3;
}

.portfolio-info {
    padding: 28px 32px 32px;
}

.portfolio-info h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.portfolio-info p {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    line-height: 1.65;
    margin-bottom: 20px;
}

.portfolio-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.portfolio-tags span {
    padding: 4px 12px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 100px;
    font-size: 12px;
    color: var(--color-text-muted);
}

/* ===== Process ===== */
.process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.process-step {
    position: relative;
    padding: 32px 28px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.process-step:hover {
    border-color: var(--color-border-light);
    transform: translateY(-2px);
}

.process-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-primary);
    opacity: 0.3;
    margin-bottom: 16px;
}

.process-step h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.process-step p {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ===== CTA / Contact ===== */
.contact {
    background: var(--color-bg-elevated);
}

.cta-centered {
    text-align: center;
    max-width: 640px;
    margin: 0 auto;
}

.cta-centered h2 {
    font-size: clamp(1.75rem, 3.5vw, 2.5rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
}

.cta-centered p {
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 32px;
}

.cta-centered .btn {
    margin-bottom: 32px;
}

.contact-details {
    display: flex;
    justify-content: center;
    gap: 16px;
}

.contact-item {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--color-text-secondary);
    font-size: 15px;
    transition: color var(--transition-fast);
}

.contact-item:hover {
    color: var(--color-primary-dark);
}

/* ===== Footer ===== */
.footer {
    padding: 48px 0 32px;
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 32px;
}

.footer-brand p {
    color: var(--color-text-muted);
    font-size: 14px;
    margin-top: 8px;
}

.footer-links {
    display: flex;
    gap: 28px;
}

.footer-links a {
    font-size: 14px;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid var(--color-border);
}

.footer-bottom p {
    font-size: 13px;
    color: var(--color-text-muted);
}

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

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .process-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 48px;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 80px 0;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        right: 24px;
        background: var(--color-bg-card);
        border: 1px solid var(--color-border-light);
        border-radius: var(--radius-md);
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 8px 0;
        min-width: 220px;
        box-shadow: var(--shadow-lg);
        z-index: 999;
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links li {
        list-style: none;
    }

    .nav-links a {
        font-size: 1rem;
        display: block;
        padding: 12px 24px;
        transition: background var(--transition-fast);
    }

    .nav-links a:hover {
        background: var(--color-bg-card-hover);
    }

    .nav-links .btn-nav {
        margin: 8px 16px;
        text-align: center;
        border-radius: var(--radius-sm);
    }

    .nav-links .btn-nav:hover {
        background: #0a1630;
    }

    .nav-toggle {
        display: flex;
        z-index: 1001;
    }

    .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(5px, -5px);
    }

    .hero {
        padding: 100px 0 60px;
        min-height: auto;
    }

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

    .hero-stats {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }

    .stat-divider {
        width: 40px;
        height: 1px;
    }

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

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

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

    .footer-content {
        flex-direction: column;
        gap: 24px;
        text-align: center;
    }
}