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

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #dbeafe;
    --accent: #f59e0b;
    --dark: #0f172a;
    --dark-2: #1e293b;
    --gray: #64748b;
    --gray-light: #f1f5f9;
    --white: #ffffff;
    --radius: 12px;
    --radius-lg: 20px;
    --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.04);
    --shadow-lg: 0 4px 24px rgba(0,0,0,0.1);
    --gradient: linear-gradient(135deg, #6366f1, #4f46e5);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, sans-serif;
    color: var(--dark);
    line-height: 1.6;
    background: var(--white);
    -webkit-font-smoothing: antialiased;
}

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

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

ul {
    list-style: none;
}

/* === SVG Icons === */
svg.icon-sm { width: 24px; height: 24px; }
svg.icon-md { width: 32px; height: 32px; }
svg.icon-lg { width: 40px; height: 40px; }
svg.icon-xl { width: 48px; height: 48px; }

svg.pc-icon {
    width: 22px;
    height: 22px;
    color: var(--primary);
    flex-shrink: 0;
}

.service-icon-lg {
    color: var(--primary);
}

.approach-icon svg {
    color: var(--white);
}

.why-icon svg {
    color: var(--primary);
}

.placeholder-icon svg {
    color: var(--primary);
    opacity: 0.6;
}

.cta-channel-icon svg {
    color: var(--white);
}

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

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: inherit;
    font-weight: 600;
    border: 2px solid transparent;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.btn-primary {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}
.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(37,99,235,0.3);
}

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

.btn-sm { padding: 8px 20px; font-size: 14px; }
.btn-lg { padding: 14px 32px; font-size: 16px; }
.btn-block { width: 100%; }

/* === Header === */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0,0,0,0.06);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    font-size: 22px;
    font-weight: 800;
    color: var(--dark);
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-stairs {
    width: 48px;
    height: 38px;
    flex-shrink: 0;
}

.logo-text-wrap {
    display: flex;
    flex-direction: column;
    line-height: 1;
}

.logo-text {
    font-size: 22px;
    font-weight: 900;
    letter-spacing: 2.6px;
    line-height: 1;
    background: linear-gradient(135deg, #6d28d9, #4f46e5);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-subtitle {
    font-size: 8.5px;
    font-weight: 600;
    letter-spacing: 5.2px;
    text-transform: uppercase;
    color: var(--gray);
    margin-top: 3px;
    white-space: nowrap;
}

.footer .logo-text {
    background: linear-gradient(135deg, #a78bfa, #818cf8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer .logo-subtitle {
    color: #94a3b8;
}

.nav {
    display: flex;
    gap: 32px;
}

.nav a {
    font-size: 15px;
    font-weight: 500;
    color: var(--gray);
    transition: color 0.2s;
}
.nav a:hover {
    color: var(--primary);
}

/* === Language Switcher === */
.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.lang-switcher {
    display: flex;
    gap: 2px;
    background: var(--gray-light);
    border-radius: 8px;
    padding: 2px;
}

.lang-btn {
    padding: 5px 10px;
    border: none;
    background: none;
    font-family: inherit;
    font-size: 12px;
    font-weight: 600;
    color: var(--gray);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
}

.lang-btn:hover {
    color: var(--dark);
}

.lang-btn.active {
    background: var(--primary);
    color: var(--white);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}
.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--dark);
    border-radius: 2px;
    transition: 0.2s;
}

/* === Hero === */
.hero {
    padding: 140px 0 80px;
    background: linear-gradient(180deg, #f8faff 0%, var(--white) 100%);
}

.hero-content {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 60px;
    align-items: center;
}

.hero-badge {
    display: inline-block;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 14px;
    font-weight: 600;
    padding: 6px 16px;
    border-radius: 100px;
    margin-bottom: 20px;
}

.hero h1 {
    font-size: 44px;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

.gradient-text {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 17px;
    color: var(--gray);
    margin-bottom: 32px;
    max-width: 520px;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    gap: 40px;
}

.hero-stat strong {
    display: block;
    font-size: 28px;
    font-weight: 800;
    color: var(--primary);
}

.hero-stat span {
    font-size: 14px;
    color: var(--gray);
}

/* Hero services preview */
.hero-services-preview {
    position: relative;
    width: 100%;
    aspect-ratio: 1;
    max-width: 420px;
    margin: 0 auto;
}

.preview-card {
    position: absolute;
    background: var(--white);
    border-radius: var(--radius);
    padding: 16px 20px;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 600;
    font-size: 15px;
    border: 1px solid rgba(0,0,0,0.06);
    transition: transform 0.3s;
    white-space: nowrap;
}
.preview-card:hover {
    transform: scale(1.05);
}

.pc-icon {
    font-size: 24px;
    display: flex;
    align-items: center;
}

.pc-1 { top: 0; left: 50%; transform: translateX(-50%); }
.pc-1:hover { transform: translateX(-50%) scale(1.05); }
.pc-2 { top: 22%; right: 0; }
.pc-3 { bottom: 22%; right: 5%; }
.pc-4 { bottom: 22%; left: 0; }
.pc-5 { top: 22%; left: 0; }

.preview-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    background: var(--gradient);
    color: var(--white);
    border-radius: 50%;
    width: 130px;
    height: 130px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    box-shadow: 0 8px 32px rgba(37,99,235,0.3);
}

.preview-center strong {
    font-size: 18px;
    font-weight: 800;
}

.preview-arrow {
    font-size: 16px;
    opacity: 0.7;
    line-height: 1;
}

/* === Approach === */
.approach {
    padding: 48px 0;
    background: var(--primary);
}

.approach-inner {
    display: flex;
    align-items: center;
    gap: 24px;
    color: var(--white);
}

.approach-icon {
    flex-shrink: 0;
    display: flex;
    align-items: center;
}

.approach-text h2 {
    font-size: 24px;
    font-weight: 800;
    margin-bottom: 4px;
}

.approach-text p {
    font-size: 17px;
    opacity: 0.9;
    line-height: 1.6;
}

/* === Section common === */
.section-title {
    font-size: 36px;
    font-weight: 800;
    text-align: center;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: 18px;
    color: var(--gray);
    text-align: center;
    margin-bottom: 48px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* === Services (new list layout) === */
.services {
    padding: 80px 0;
    background: var(--gray-light);
}

.services-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.service-card-wide {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 36px 40px;
    box-shadow: var(--shadow);
    display: flex;
    align-items: flex-start;
    gap: 24px;
    transition: transform 0.2s, box-shadow 0.2s;
    position: relative;
    overflow: hidden;
}
.service-card-wide:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.service-number {
    font-size: 56px;
    font-weight: 900;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0.15;
    position: absolute;
    top: 12px;
    right: 24px;
    line-height: 1;
}

.service-icon-lg {
    flex-shrink: 0;
    margin-top: 4px;
    display: flex;
    align-items: center;
}

.service-body h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 10px;
}

.service-body > p {
    color: var(--gray);
    font-size: 15px;
    line-height: 1.6;
    margin-bottom: 16px;
    max-width: 700px;
}

.service-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 12px;
}

.tag {
    background: var(--primary-light);
    color: var(--primary);
    font-size: 13px;
    font-weight: 500;
    padding: 4px 12px;
    border-radius: 100px;
}

.service-example {
    display: inline-block;
    color: var(--primary);
    font-size: 14px;
    font-weight: 600;
    margin-top: 4px;
    transition: opacity 0.2s;
}
.service-example:hover {
    opacity: 0.7;
}

/* === Portfolio === */
.portfolio {
    padding: 80px 0;
}

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

.portfolio-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.2s, box-shadow 0.2s;
}
.portfolio-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.portfolio-card-featured {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
}

.portfolio-image {
    position: relative;
    overflow: hidden;
}

.portfolio-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.portfolio-overlay {
    position: absolute;
    top: 16px;
    left: 16px;
}

.portfolio-tag {
    background: var(--primary);
    color: var(--white);
    font-size: 13px;
    font-weight: 600;
    padding: 4px 14px;
    border-radius: 100px;
}

.portfolio-info {
    padding: 32px;
}

.portfolio-info h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 12px;
}

.portfolio-info > p {
    color: var(--gray);
    margin-bottom: 24px;
    font-size: 15px;
}

.portfolio-results {
    display: flex;
    gap: 32px;
}

.portfolio-result strong {
    display: block;
    font-size: 24px;
    font-weight: 800;
    color: var(--primary);
}

.portfolio-result span {
    font-size: 13px;
    color: var(--gray);
}

.portfolio-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 200px;
    background: linear-gradient(135deg, var(--primary-light), #ede9fe);
}

.placeholder-icon {
    display: flex;
    align-items: center;
    justify-content: center;
}

.portfolio-link {
    color: var(--primary);
    font-weight: 600;
    font-size: 14px;
    transition: opacity 0.2s;
}
.portfolio-link:hover {
    opacity: 0.7;
}

/* === Process === */
.process {
    padding: 80px 0;
    background: var(--dark);
    color: var(--white);
}

.process .section-title {
    color: var(--white);
}

.process-steps {
    display: flex;
    align-items: flex-start;
    gap: 0;
    margin-top: 48px;
}

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

.step-number {
    font-size: 48px;
    font-weight: 800;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
}

.process-step h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
}

.process-step p {
    font-size: 15px;
    color: #94a3b8;
    line-height: 1.5;
}

.process-connector {
    width: 60px;
    min-width: 60px;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), #7c3aed);
    margin-top: 32px;
}

/* === Why me === */
.why-me {
    padding: 80px 0;
    background: var(--gray-light);
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 48px;
}

.why-card {
    padding: 32px 24px;
    border-radius: var(--radius);
    background: var(--white);
    box-shadow: var(--shadow);
    transition: transform 0.2s, box-shadow 0.2s;
}
.why-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.why-icon {
    margin-bottom: 16px;
    display: flex;
}

.why-card h3 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 8px;
    line-height: 1.3;
}

.why-card p {
    font-size: 14px;
    color: var(--gray);
    line-height: 1.5;
}

/* === CTA / Contact === */
.cta {
    padding: 80px 0;
    background: linear-gradient(135deg, #1e3a8a, #4338ca);
    color: var(--white);
}

.cta-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: flex-start;
}

.cta-text h2 {
    font-size: 36px;
    font-weight: 800;
    margin-bottom: 16px;
    line-height: 1.2;
}

.cta-text > p {
    font-size: 17px;
    opacity: 0.85;
    margin-bottom: 32px;
}

.cta-channels {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.cta-channel {
    display: flex;
    align-items: center;
    gap: 14px;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: var(--radius);
    padding: 16px 20px;
    transition: background 0.2s;
}
.cta-channel:hover {
    background: rgba(255,255,255,0.18);
}

.cta-channel-icon {
    display: flex;
    align-items: center;
}

.cta-channel strong {
    display: block;
    font-size: 16px;
}

.cta-channel span {
    font-size: 13px;
    opacity: 0.7;
}

.cta-form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.cta-form input,
.cta-form textarea {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid rgba(255,255,255,0.2);
    border-radius: 10px;
    background: rgba(255,255,255,0.1);
    color: var(--white);
    font-family: inherit;
    font-size: 15px;
    transition: border-color 0.2s;
}

.cta-form input::placeholder,
.cta-form textarea::placeholder {
    color: rgba(255,255,255,0.5);
}

.cta-form input:focus,
.cta-form textarea:focus {
    outline: none;
    border-color: rgba(255,255,255,0.5);
    background: rgba(255,255,255,0.15);
}

.cta-form .btn-primary {
    background: var(--white);
    color: var(--primary-dark);
    border-color: var(--white);
    margin-top: 4px;
}
.cta-form .btn-primary:hover {
    background: var(--primary-light);
    border-color: var(--primary-light);
    transform: translateY(-1px);
}

.form-note {
    font-size: 13px;
    opacity: 0.6;
    text-align: center;
}

/* === Footer === */
.footer {
    padding: 48px 0 0;
    background: var(--dark);
    color: #94a3b8;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding-bottom: 32px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-brand .logo {
    color: var(--white);
    margin-bottom: 8px;
}

.footer-brand p {
    font-size: 14px;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a,
.footer-contacts a {
    font-size: 14px;
    transition: color 0.2s;
}

.footer-links a:hover,
.footer-contacts a:hover {
    color: var(--white);
}

.footer-contacts {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-bottom {
    padding: 24px 0;
    font-size: 13px;
    text-align: center;
}

/* === Responsive === */
@media (max-width: 1024px) {
    .hero h1 { font-size: 36px; }
    .why-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .nav, .header-right .btn { display: none; }
    .mobile-menu-btn { display: flex; }
    .header-right { gap: 12px; }
    .lang-btn { padding: 4px 7px; font-size: 11px; }

    .hero { padding: 110px 0 60px; }
    .hero-content { grid-template-columns: 1fr; gap: 40px; }
    .hero h1 { font-size: 30px; }
    .hero-actions { flex-direction: column; }
    .hero-stats { gap: 24px; }
    .hero-services-preview { max-width: 320px; }

    .section-title { font-size: 28px; }

    .approach-inner { flex-direction: column; text-align: center; }

    .service-card-wide {
        flex-direction: column;
        padding: 28px 24px;
    }
    .service-number { font-size: 40px; }

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

    .process-steps { flex-direction: column; gap: 32px; align-items: center; }
    .process-connector { width: 2px; height: 40px; min-width: 2px; }

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

    .cta-inner { grid-template-columns: 1fr; gap: 40px; }
    .form-row { grid-template-columns: 1fr; }

    .footer-inner { flex-direction: column; gap: 24px; }
    .footer-links { flex-wrap: wrap; }
}