/* ===================== VARIABLES ===================== */
:root {
    --color-bg: #0a0a0f;
    --color-bg-alt: #12121a;
    --color-surface: #1a1a25;
    --color-surface-hover: #22222f;
    --color-border: rgba(255, 255, 255, 0.08);
    --color-text: #e8e8ed;
    --color-text-muted: #8888a0;
    --color-text-dim: #55556a;
    --color-accent: #6c5ce7;
    --color-accent-light: #a29bfe;
    --color-accent-glow: rgba(108, 92, 231, 0.15);
    --color-gradient-1: #6c5ce7;
    --color-gradient-2: #00cec9;
    --color-white: #ffffff;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-brand: 'DM Sans', sans-serif;
    --container-width: 1140px;
    --transition: 0.3s ease;
    --radius: 12px;
    --radius-lg: 20px;
}

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

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

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

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

ul { list-style: none; }
img { max-width: 100%; display: block; }

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 100px 0;
}

/* ===================== TYPOGRAPHY ===================== */
.section-tag {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--color-accent-light);
    margin-bottom: 12px;
}

.section-title {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 16px;
    color: var(--color-white);
}

.section-subtitle {
    font-size: 1.05rem;
    color: var(--color-text-muted);
    max-width: 580px;
    line-height: 1.7;
    margin-bottom: 48px;
}

.gradient-text {
    background: linear-gradient(135deg, var(--color-gradient-1), var(--color-gradient-2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===================== BUTTONS ===================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition);
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-gradient-1), var(--color-gradient-2));
    color: #fff;
    box-shadow: 0 4px 20px rgba(108, 92, 231, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(108, 92, 231, 0.45);
}

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

.btn-ghost:hover {
    border-color: var(--color-accent-light);
    color: var(--color-accent-light);
}

.btn-large {
    padding: 16px 36px;
    font-size: 1rem;
}

/* ===================== NAVBAR ===================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 18px 0;
    background: rgba(10, 10, 15, 0.6);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: all var(--transition);
}

.navbar.scrolled {
    padding: 12px 0;
    background: rgba(10, 10, 15, 0.92);
    border-bottom-color: var(--color-border);
}

.nav-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-family: var(--font-brand);
    font-size: 1.65rem;
    font-weight: 700;
    color: var(--color-white);
    letter-spacing: -0.5px;
}

.nav-logo em {
    font-style: italic;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-muted);
    padding: 4px 0;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-gradient-1), var(--color-gradient-2));
    transition: width var(--transition);
    border-radius: 2px;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--color-white);
}

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

.nav-cta {
    display: inline-flex;
    align-items: center;
    padding: 10px 22px;
    background: linear-gradient(135deg, var(--color-gradient-1), var(--color-gradient-2));
    color: #fff;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.82rem;
    transition: all var(--transition);
}

.nav-cta:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(108, 92, 231, 0.35);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    z-index: 1001;
}

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

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ===================== HERO ===================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    max-width: var(--container-width);
    margin: 0 auto;
    gap: 60px;
    padding-left: 24px;
    padding-right: 24px;
}

.hero-content {
    flex: 1;
    min-width: 0;
}

.hero-tag {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--color-accent-light);
    margin-bottom: 20px;
}

.hero-title {
    font-size: clamp(2.4rem, 5vw, 3.6rem);
    font-weight: 900;
    line-height: 1.1;
    color: var(--color-white);
    margin-bottom: 20px;
    letter-spacing: -0.5px;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    line-height: 1.75;
    margin-bottom: 36px;
    max-width: 480px;
}

.hero-actions {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}

/* Hero Visual / Browser Mockup */
.hero-visual {
    flex: 1;
    min-width: 0;
    display: flex;
    justify-content: center;
}

.browser-mockup {
    width: 100%;
    max-width: 480px;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.browser-bar {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 12px 16px;
    background: var(--color-bg-alt);
    border-bottom: 1px solid var(--color-border);
}

.browser-bar .dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}
.browser-bar .dot.red { background: #ff5f57; }
.browser-bar .dot.yellow { background: #febc2e; }
.browser-bar .dot.green { background: #28c840; }

.browser-url {
    margin-left: 12px;
    font-size: 0.72rem;
    color: var(--color-text-dim);
    background: var(--color-bg);
    padding: 4px 14px;
    border-radius: 6px;
    flex: 1;
}

.browser-body {
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 20px;
}

.mockup-before,
.mockup-after {
    flex: 1;
}

.mockup-label {
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-text-dim);
    margin-bottom: 14px;
    display: block;
}

.mockup-label.accent {
    color: var(--color-accent-light);
}

.mockup-lines .line {
    height: 6px;
    border-radius: 3px;
    margin-bottom: 8px;
    background: var(--color-surface-hover);
}

.mockup-lines.modern .line {
    background: linear-gradient(90deg, var(--color-gradient-1), var(--color-gradient-2));
    opacity: 0.5;
}

.line.w80 { width: 80%; }
.line.w70 { width: 70%; }
.line.w60 { width: 60%; }
.line.w50 { width: 50%; }
.line.w90 { width: 90%; }
.line.w40 { width: 40%; }

.block-row {
    display: flex;
    gap: 6px;
    margin-top: 12px;
}

.block-row .block {
    flex: 1;
    height: 36px;
    border-radius: 4px;
    background: var(--color-surface-hover);
}

.block-row.modern .block {
    background: linear-gradient(135deg, var(--color-gradient-1), var(--color-gradient-2));
    opacity: 0.25;
}

.mockup-arrow {
    color: var(--color-accent-light);
    font-size: 0.75rem;
    flex-shrink: 0;
}

/* ===================== STATS ===================== */
.stats {
    padding: 48px 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    background: var(--color-bg-alt);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    text-align: center;
}

.stat-number {
    font-size: 2.2rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--color-gradient-1), var(--color-gradient-2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-suffix {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-accent-light);
}

.stat p {
    font-size: 0.82rem;
    color: var(--color-text-muted);
    margin-top: 4px;
    font-weight: 500;
}

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

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.service-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 36px 28px;
    transition: all var(--transition);
}

.service-card:hover {
    border-color: rgba(108, 92, 231, 0.3);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(108, 92, 231, 0.1);
}

.service-icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    background: var(--color-accent-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 1.1rem;
    color: var(--color-accent-light);
}

.service-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--color-white);
}

.service-card p {
    font-size: 0.88rem;
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* ===================== WORK ===================== */
.work {
    background: var(--color-bg-alt);
}

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

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

.work-card:hover {
    border-color: rgba(108, 92, 231, 0.3);
    transform: translateY(-4px);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.3);
}

.work-preview {
    aspect-ratio: 16 / 10;
    background: linear-gradient(135deg, var(--color-bg), var(--color-surface));
    display: flex;
    align-items: center;
    justify-content: center;
}

.work-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: var(--color-text-dim);
}

.work-placeholder i {
    font-size: 2rem;
    opacity: 0.5;
}

.work-placeholder span {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.work-info {
    padding: 24px;
}

.work-info h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 8px;
}

.work-info p {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    line-height: 1.65;
    margin-bottom: 14px;
}

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

.work-tags span {
    font-size: 0.7rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 20px;
    background: var(--color-accent-glow);
    color: var(--color-accent-light);
}

/* ===================== PROCESS ===================== */
.process {
    background: var(--color-bg);
}

.process-grid {
    display: flex;
    align-items: flex-start;
    gap: 0;
}

.process-step {
    flex: 1;
    text-align: center;
    padding: 0 20px;
}

.step-number {
    font-size: 2.4rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--color-gradient-1), var(--color-gradient-2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 14px;
    line-height: 1;
}

.process-step h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 10px;
}

.process-step p {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    line-height: 1.7;
}

.process-connector {
    display: flex;
    align-items: center;
    padding-top: 16px;
    color: var(--color-text-dim);
    font-size: 0.8rem;
    flex-shrink: 0;
}

/* ===================== WHY ===================== */
.why {
    background: var(--color-bg-alt);
}

.why-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.why-content .section-title {
    margin-bottom: 18px;
}

.why-content > p {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    line-height: 1.75;
    margin-bottom: 28px;
}

.why-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.why-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.92rem;
    color: var(--color-text);
}

.why-list li i {
    color: var(--color-accent-light);
    font-size: 0.8rem;
    flex-shrink: 0;
}

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

.tech-stack h4 {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-text-muted);
    margin-bottom: 24px;
    text-align: center;
}

.tech-icons {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.tech-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 16px 8px;
    border-radius: var(--radius);
    transition: all var(--transition);
}

.tech-item:hover {
    background: var(--color-accent-glow);
}

.tech-item i {
    font-size: 1.6rem;
    color: var(--color-accent-light);
}

.tech-item span {
    font-size: 0.68rem;
    font-weight: 600;
    color: var(--color-text-muted);
}

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

.cta-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 60px;
    text-align: center;
    max-width: 680px;
    margin: 0 auto;
}

.cta-card h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 800;
    color: var(--color-white);
    margin-bottom: 12px;
}

.cta-card > p {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    margin-bottom: 36px;
    line-height: 1.7;
}

.cta-form {
    display: flex;
    flex-direction: column;
    gap: 14px;
    text-align: left;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.cta-form input,
.cta-form textarea {
    width: 100%;
    padding: 14px 18px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    background: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-body);
    font-size: 0.9rem;
    transition: border-color var(--transition);
    outline: none;
}

.cta-form input::placeholder,
.cta-form textarea::placeholder {
    color: var(--color-text-dim);
}

.cta-form input:focus,
.cta-form textarea:focus {
    border-color: var(--color-accent);
}

.cta-form textarea {
    resize: vertical;
    min-height: 100px;
}

.cta-form .btn {
    align-self: center;
    margin-top: 8px;
}

/* ===================== FOOTER ===================== */
.footer {
    padding: 64px 0 0;
    background: var(--color-bg-alt);
    border-top: 1px solid var(--color-border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 48px;
}

.footer-logo {
    font-family: var(--font-brand);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--color-white);
    display: inline-block;
    margin-bottom: 14px;
}

.footer-logo em {
    font-style: italic;
}

.footer-brand p {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-bottom: 20px;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    font-size: 0.85rem;
    transition: all var(--transition);
}

.footer-social a:hover {
    background: var(--color-accent-glow);
    border-color: var(--color-accent);
    color: var(--color-accent-light);
}

.footer-links h4 {
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-white);
    margin-bottom: 18px;
}

.footer-links a {
    display: block;
    font-size: 0.85rem;
    color: var(--color-text-muted);
    padding: 5px 0;
}

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

.footer-bottom {
    border-top: 1px solid var(--color-border);
    padding: 24px 0;
    text-align: center;
}

.footer-bottom p {
    font-size: 0.78rem;
    color: var(--color-text-dim);
}

/* ===================== BACK TO TOP ===================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 44px;
    height: 44px;
    border-radius: 10px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    color: var(--color-text-muted);
    font-size: 0.85rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition);
    z-index: 99;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--color-accent-glow);
    border-color: var(--color-accent);
    color: var(--color-accent-light);
}

/* ===================== RESPONSIVE ===================== */
@media (max-width: 968px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: 140px;
        gap: 40px;
    }

    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-actions {
        justify-content: center;
    }

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

    .work-grid {
        grid-template-columns: 1fr;
        max-width: 480px;
        margin: 0 auto;
    }

    .process-grid {
        flex-direction: column;
        gap: 32px;
        max-width: 400px;
        margin: 0 auto;
    }

    .process-connector {
        display: none;
    }

    .process-step {
        padding: 0;
    }

    .why-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }

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

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--color-bg-alt);
        flex-direction: column;
        padding: 80px 32px 32px;
        gap: 0;
        transition: right var(--transition);
        border-left: 1px solid var(--color-border);
    }

    .nav-links.active {
        right: 0;
    }

    .nav-links li a {
        display: block;
        padding: 14px 0;
        font-size: 1rem;
        border-bottom: 1px solid var(--color-border);
    }

    .nav-cta {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .section {
        padding: 70px 0;
    }

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

    .form-row {
        grid-template-columns: 1fr;
    }

    .cta-card {
        padding: 36px 24px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .browser-mockup {
        max-width: 360px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

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

    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 24px;
    }

    .stat-number {
        font-size: 1.8rem;
    }
}