:root {
  --primary:       #ED7D3A;
  --secondary:     #363537;
  --primary-hover: #f68f53;
  --danger:        #ef4444;
  --success:       #10b981;
  --bg:            #f8fafc;
  --surface:       #ffffff;
  --border:        #e2e8f0;
  --text:          #1e293b;
  --text-muted:    #64748b;
  --radius:        8px;
}

* { box-sizing: border-box; }

body {
    font-family: 'Segoe UI', Arial, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    margin: 0;
    line-height: 1.6;
}

.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ── NAVBAR ─────────────────────────────────────── */
.navbar {
    background: var(--secondary);
    padding: 14px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 8px rgba(0,0,0,.3);
}
.navbar-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 18px;
    position: relative;
}
.brand { font-size: 1.4rem; font-weight: 700; color: white; text-decoration: none; }
.brand-accent { color: var(--primary); }
.menu {
    display: flex;
    align-items: center;
    gap: 8px;
}
.menu a {
    color: #cbd5e1;
    text-decoration: none;
    margin-left: 0;
    font-size: 0.9rem;
    padding: 8px 10px;
    border-radius: 6px;
    transition: color .2s, background-color .2s;
}
.menu a:hover {
    color: white;
    background: rgba(255,255,255,.08);
}

.hamburger {
    display: none;
    width: 42px;
    height: 42px;
    border: 1px solid #4b5563;
    border-radius: 8px;
    background: transparent;
    cursor: pointer;
    padding: 0;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
}
.hamburger span {
    width: 18px;
    height: 2px;
    background: #e2e8f0;
    border-radius: 3px;
    transition: transform .2s, opacity .2s;
}
.hamburger[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.hamburger[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}
.hamburger[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ── HERO ────────────────────────────────────────── */
.hero {
    background: var(--secondary);
    padding: 72px 0 56px;
    overflow: hidden;
}
.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 48px;
    align-items: center;
}
.badge {
    display: inline-block;
    background: rgba(237,125,58,.15);
    color: var(--primary);
    border: 1px solid rgba(237,125,58,.3);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 16px;
    letter-spacing: .04em;
}
.hero-text h1 {
    color: white;
    font-size: 2.2rem;
    line-height: 1.2;
    margin: 0 0 16px;
}
.hero-text p {
    color: #94a3b8;
    font-size: 1rem;
    margin-bottom: 28px;
}
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }

/* OS badges */
.os-badges {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 24px;
    flex-wrap: wrap;
}
.os-label {
    font-size: 0.78rem;
    color: #64748b;
    text-transform: uppercase;
    letter-spacing: .06em;
    font-weight: 600;
}
.os-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(255,255,255,.07);
    border: 1px solid #334155;
    border-radius: 20px;
    padding: 5px 12px;
    font-size: 0.8rem;
    color: #cbd5e1;
    font-weight: 500;
}
.os-badge svg { opacity: .85; }

.btn-outline {
    background: transparent;
    color: white;
    border: 1px solid #475569;
    padding: 10px 20px;
    border-radius: var(--radius);
    cursor: pointer;
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
    transition: border-color .2s;
    font-size: 0.9rem;
}
.btn-outline:hover { border-color: white; }
.mockup-svg {
    width: 100%;
    border-radius: 10px;
    display: block;
}

/* ── SECTIONS ────────────────────────────────────── */
.section { padding: 72px 0; }
.bg-light { background: #f1f5f9; }
.section-title {
    border-left: 4px solid var(--primary);
    padding-left: 16px;
    margin: 0 0 40px;
    font-size: 1.5rem;
}

/* ── FEATURES GRID ───────────────────────────────── */
.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.feature-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px 20px;
    text-align: center;
    transition: box-shadow .2s, transform .2s;
}
.feature-card:hover {
    box-shadow: 0 6px 24px rgba(0,0,0,.08);
    transform: translateY(-3px);
}
.feature-icon {
    width: 52px;
    height: 52px;
    background: rgba(237,125,58,.1);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    color: var(--primary);
}
.feature-icon svg { width: 24px; height: 24px; }
.feature-card h3 { margin: 0 0 8px; font-size: 0.95rem; }
.feature-card p { margin: 0; font-size: 0.85rem; color: var(--text-muted); line-height: 1.5; }

/* ── GALLERY ─────────────────────────────────────── */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.screenshot-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,.06);
    transition: box-shadow .2s, transform .2s;
}
.screenshot-card:hover {
    box-shadow: 0 10px 30px rgba(0,0,0,.12);
    transform: translateY(-4px);
}
.screenshot-card svg { display: block; width: 100%; }
.screenshot-label {
    padding: 10px 14px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
}

/* ── MODULES ─────────────────────────────────────── */
.modules-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}
.module-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 22px;
    display: flex;
    gap: 16px;
    align-items: flex-start;
    transition: box-shadow .2s;
}
.module-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,.07); }
.module-icon {
    width: 44px;
    height: 44px;
    background: rgba(237,125,58,.1);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--primary);
}
.module-icon svg { width: 20px; height: 20px; }
.module-card h3 { margin: 0 0 6px; font-size: 0.95rem; }
.module-card p { margin: 0; font-size: 0.85rem; color: var(--text-muted); line-height: 1.5; }

/* ── CONTACT ─────────────────────────────────────── */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 48px;
    align-items: start;
}
.contact-info h2 { margin: 0 0 14px; font-size: 1.6rem; }
.contact-info p { color: var(--text-muted); margin: 0 0 28px; line-height: 1.6; }
.contact-details {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.contact-details li {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-muted);
    font-size: 0.9rem;
}
.contact-details svg { color: var(--primary); flex-shrink: 0; }

/* Form */
.contact-form {
    background: var(--surface);
    border: 1px solid var(--border);
    padding: 32px;
    border-radius: var(--radius);
    box-shadow: 0 2px 12px rgba(0,0,0,.05);
}
.form-group { margin-bottom: 18px; }
.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text);
}
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 0.9rem;
    background: var(--bg);
    color: var(--text);
    transition: border-color .2s, box-shadow .2s;
    font-family: inherit;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(237,125,58,.15);
}
.form-group textarea { resize: vertical; min-height: 100px; }
.btn-full { width: 100%; text-align: center; padding: 12px; font-size: 1rem; }
.form-note { text-align: center; font-size: 0.78rem; color: var(--text-muted); margin: 10px 0 0; }

/* ── BUTTON ──────────────────────────────────────── */
.btn-primary {
    background: var(--primary);
    color: white;
    padding: 10px 22px;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    font-weight: 700;
    text-decoration: none;
    display: inline-block;
    transition: background .2s, transform .1s;
    font-size: 0.9rem;
}
.btn-primary:hover { background: var(--primary-hover); transform: translateY(-1px); }
.btn-primary:disabled { opacity: .7; cursor: not-allowed; transform: none; }

/* ── FOOTER ──────────────────────────────────────── */
.footer {
    background: #1e2022;
    padding: 60px 0 0;
    color: #94a3b8;
    font-size: 0.85rem;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 48px;
    border-bottom: 1px solid #2d3139;
}
.footer-brand p {
    margin: 14px 0 20px;
    line-height: 1.6;
    color: #64748b;
    font-size: 0.83rem;
    max-width: 220px;
}
.footer-os {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}
/* reuse .os-badge from hero, override slightly for footer */
.footer-os .os-badge {
    font-size: 0.75rem;
    padding: 4px 10px;
    background: rgba(255,255,255,.04);
    border-color: #2d3139;
}
.footer-col h4 {
    color: #e2e8f0;
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: .07em;
    margin: 0 0 16px;
    font-weight: 700;
}
.footer-col ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.footer-col ul li { color: #64748b; font-size: 0.84rem; }
.footer-col ul a {
    color: #64748b;
    text-decoration: none;
    transition: color .2s;
}
.footer-col ul a:hover { color: var(--primary); }
.footer-contact li {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #64748b;
    font-size: 0.84rem;
}
.footer-contact svg { color: var(--primary); flex-shrink: 0; opacity: .8; }
.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    font-size: 0.78rem;
    color: #475569;
}
.footer-bottom p { margin: 0; }

/* ── RESPONSIVE ──────────────────────────────────── */
@media (max-width: 860px) {
    .features-grid { grid-template-columns: 1fr 1fr; }
    .gallery-grid { grid-template-columns: 1fr 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
    .hamburger { display: inline-flex; }
    .menu {
        display: none;
        position: absolute;
        top: calc(100% + 12px);
        right: 0;
        width: min(250px, calc(100vw - 48px));
        background: #202325;
        border: 1px solid #3a3f45;
        border-radius: 10px;
        box-shadow: 0 10px 24px rgba(0,0,0,.32);
        padding: 10px;
        flex-direction: column;
        align-items: stretch;
        gap: 6px;
    }
    .menu.open { display: flex; }
    .menu a {
        margin-left: 0;
        width: 100%;
        padding: 10px 12px;
    }
    .menu a.btn-primary {
        text-align: center;
        margin-top: 4px;
    }
    .hero-grid { grid-template-columns: 1fr; }
    .hero-image { display: none; }
    .modules-grid { grid-template-columns: 1fr; }
    .contact-wrapper { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
    .footer-bottom { flex-direction: column; gap: 6px; text-align: center; }
}
@media (max-width: 520px) {
    .features-grid { grid-template-columns: 1fr; }
    .gallery-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .hero-text h1 { font-size: 1.7rem; }
    .section { padding: 48px 0; }
}