/* ============================================================
   DESIGN TOKENS
============================================================ */
:root {
    --bg-1: #070c18;
    --bg-2: #0b1730;
    --surface: #0d1b38;
    --surface-2: #112241;
    --surface-3: #0a1628;
    --text: #e5efff;
    --muted: #8baad4;
    --accent: #1fd4c5;
    --accent-2: #00a3ff;
    --accent-glow: rgba(31, 212, 197, 0.15);
    --danger: #ff7f9f;
    --ok: #59e3a6;
    --border: #19346a;
    --radius-sm: 0.5rem;
    --radius: 0.875rem;
    --radius-lg: 1.25rem;
    --maxw: 68rem;
    --border-width: 0.0625rem;
}

/* ============================================================
   RESET & BASE
============================================================ */
*, *::before, *::after { box-sizing: border-box; }
html { font-size: 100%; scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text);
    background:
        radial-gradient(80rem 50rem at 90% -10%, rgba(0, 163, 255, 0.12), transparent),
        radial-gradient(60rem 40rem at -5% 30%, rgba(31, 212, 197, 0.09), transparent),
        linear-gradient(160deg, #060b16 0%, #0b1730 60%, #060f22 100%);
    min-height: 100vh;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { margin: 0; line-height: 1.2; }
.muted { color: var(--muted); }

/* ============================================================
   LAYOUT
============================================================ */
.container {
    width: min(var(--maxw), 92vw);
    margin: 0 auto;
}
main { padding-bottom: 4rem; }

[hidden] {
    display: none !important;
}
/* ============================================================
   TOPBAR
============================================================ */
.topbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(6, 11, 22, 0.85);
    border-bottom: var(--border-width) solid rgba(25, 52, 106, 0.7);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}
.topbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
    gap: 0.75rem;
}
.logo-link { display: inline-flex; align-items: center; flex-shrink: 0; }
#site-logo { height: 5.5rem; width: auto; display: block; }

.main-tabs {
    display: flex;
    gap: 0.125rem;
    flex: 1;
    justify-content: center;
}
.nav-tab {
    background: transparent;
    border: transparent solid var(--border-width);
    color: var(--muted);
    padding: 0.5rem 1rem;
    border-radius: 999px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.875rem;
    letter-spacing: 0.01em;
    transition: color 150ms ease, background 150ms ease, border-color 150ms ease;
    white-space: nowrap;
}
.nav-tab:hover { color: var(--text); background: rgba(255, 255, 255, 0.04); }
.nav-tab[aria-selected="true"] {
    color: var(--accent);
    background: rgba(31, 212, 197, 0.12);
    border-color: rgba(31, 212, 197, 0.35);
}

.lang-controls { display: flex; gap: 0.375rem; flex-shrink: 0; }
.toggle-btn {
    border: var(--border-width) solid var(--border);
    background: var(--surface);
    color: var(--muted);
    padding: 0.375rem 0.75rem;
    border-radius: 999px;
    cursor: pointer;
    font-weight: 700;
    font-size: 0.8rem;
    letter-spacing: 0.04em;
    transition: 150ms ease;
}
.toggle-btn[aria-pressed="true"] {
    background: rgba(31, 212, 197, 0.12);
    border-color: var(--accent);
    color: var(--accent);
}

/* ============================================================
   HERO
============================================================ */
.hero-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 2.5rem;
    padding: 4.5rem 0 3rem;
}
.hero-text { max-width: 40rem; }

.eyebrow {
    display: block;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    color: var(--accent);
    text-transform: uppercase;
    margin-bottom: 0.75rem;
}

.hero-text h1 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.01em;
    margin-bottom: 1.25rem;
    color: var(--text);
}

.subtitle {
    color: var(--muted);
    font-size: 1.05rem;
    line-height: 1.65;
    margin: 0 0 2rem;
    max-width: 56ch;
}

.btn-hero {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
    color: #001824;
    font-weight: 700;
    font-size: 0.95rem;
    border: none;
    border-radius: 999px;
    padding: 0.75rem 1.75rem;
    cursor: pointer;
    transition: opacity 160ms ease, transform 160ms ease;
    letter-spacing: 0.01em;
}
.btn-hero:hover { opacity: 0.88; transform: translateY(-1px); }

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}
.hero-img {
    width: 100%;
    max-width: 480px;
    height: auto;
    display: block;
}

/* ============================================================
   TAB PANELS WRAPPER
============================================================ */
.tab-panels-wrap {
    background: linear-gradient(180deg, rgba(13, 27, 56, 0.85), rgba(10, 22, 40, 0.9));
    border: var(--border-width) solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 1.5rem 4rem rgba(0, 0, 0, 0.35);
    margin-bottom: 2rem;
}

/* ============================================================
   TAB PANEL — ANIMATION
============================================================ */
.tab-panel {
    padding: 2.25rem;
}
@keyframes fadeSlideIn {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}
.tab-panel.panel-enter {
    animation: fadeSlideIn 280ms ease both;
}

/* ============================================================
   SECTION HEADER
============================================================ */
.section-header {
    margin-bottom: 2rem;
}
.section-header h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    color: var(--text);
    margin-bottom: 0.5rem;
}
.section-lead {
    color: var(--muted);
    max-width: 65ch;
    font-size: 1rem;
    margin: 0;
}

/* ============================================================
   SERVICE GRID (Solutions tab)
============================================================ */
.service-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 2.5rem;
}

.service-card {
    background: var(--surface-3);
    border: var(--border-width) solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    transition: transform 200ms ease, box-shadow 200ms ease, border-color 200ms ease;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--accent), var(--accent-2));
    opacity: 0;
    transition: opacity 200ms ease;
}

.service-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 0.75rem 2rem rgba(31, 212, 197, 0.1);
    border-color: rgba(31, 212, 197, 0.3);
}
.service-card:hover::before { opacity: 1; }

.sc-icon-wrap {
    width: 2.75rem;
    height: 2.75rem;
    background: rgba(31, 212, 197, 0.1);
    border-radius: 0.625rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.875rem;
    color: var(--accent);
}
.sc-icon-wrap svg { width: 1.25rem; height: 1.25rem; }

.service-card h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 0.5rem;
}
.service-card p {
    color: var(--muted);
    font-size: 0.9rem;
    line-height: 1.6;
    margin: 0;
}

/* ============================================================
   PROJECT SECTION (Solutions tab)
============================================================ */
.project-section { margin-top: 2.5rem; }
.project-section-header { margin-bottom: 1.25rem; }
.project-section-header p { color: var(--muted); font-size: 0.9rem; margin: 0.25rem 0 0; }

.project-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
}

.project-card {
    background: var(--surface-3);
    border: var(--border-width) solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 200ms ease, box-shadow 200ms ease, border-color 200ms ease;
}
.project-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 0.75rem 2rem rgba(31, 212, 197, 0.1);
    border-color: rgba(31, 212, 197, 0.3);
}

.project-img {
    margin: 0;
    aspect-ratio: 16/9;
    background: var(--bg-2);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}
.project-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.img-fallback {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.625rem;
    width: 100%;
    height: 100%;
    color: var(--border);
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}
.img-fallback svg { width: 2.5rem; height: 2.5rem; opacity: 0.4; }

.project-body {
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.625rem;
    flex: 1;
}
.project-icon {
    width: 2.5rem;
    height: 2.5rem;
    background: rgba(31, 212, 197, 0.1);
    border-radius: 0.625rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
}
.project-icon svg { width: 1.25rem; height: 1.25rem; }
.project-body h3 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text);
    margin: 0;
}
.project-body p {
    font-size: 0.875rem;
    color: var(--muted);
    line-height: 1.6;
    margin: 0;
    flex: 1;
}
.btn-project {
    background: transparent;
    border: var(--border-width) solid rgba(31, 212, 197, 0.35);
    color: var(--accent);
    font-size: 0.82rem;
    font-weight: 600;
    border-radius: 999px;
    padding: 0.45rem 1rem;
    cursor: pointer;
    align-self: flex-start;
    transition: background 150ms ease, border-color 150ms ease;
    letter-spacing: 0.02em;
    margin-top: auto;
}
.btn-project:hover {
    background: rgba(31, 212, 197, 0.1);
    border-color: var(--accent);
}

/* PROJECT MODALS */
.project-modal {
    background: var(--surface);
    border: var(--border-width) solid var(--border);
    border-radius: var(--radius-lg);
    color: var(--text);
    max-width: 42rem;
    width: min(42rem, 90vw);
    padding: 0;
    overflow: hidden;
    box-shadow: 0 2rem 5rem rgba(0, 0, 0, 0.6);
}
.project-modal::backdrop {
    background: rgba(0, 0, 0, 0.72);
    backdrop-filter: blur(4px);
}
.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.125rem 1.5rem;
    border-bottom: var(--border-width) solid var(--border);
    gap: 1rem;
}
.modal-header h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text);
    margin: 0;
}
.modal-close {
    background: transparent;
    border: none;
    color: var(--muted);
    font-size: 1.375rem;
    line-height: 1;
    cursor: pointer;
    padding: 0;
    flex-shrink: 0;
    transition: color 150ms;
}
.modal-close:hover { color: var(--text); }
.modal-img {
    margin: 0;
    aspect-ratio: 16/9;
    background: var(--bg-2);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}
.modal-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.modal-img-fallback {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
}
.modal-img-fallback svg { width: 4rem; height: 4rem; color: var(--border); opacity: 0.35; }
.modal-body {
    padding: 1.5rem;
}
.modal-body p {
    color: var(--muted);
    font-size: 0.9rem;
    line-height: 1.65;
    margin: 0 0 1.25rem;
}
.modal-features {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}
.modal-features li {
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    background: rgba(31, 212, 197, 0.08);
    border: var(--border-width) solid rgba(31, 212, 197, 0.2);
    color: var(--accent);
    border-radius: 999px;
    padding: 0.275rem 0.75rem;
}

/* ============================================================
   TECH GRID (Technologies tab)
============================================================ */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(19rem, 1fr));
    gap: 1rem;
}
.tech-card {
    display: flex;
    gap: 1.125rem;
    background: var(--surface-3);
    border: var(--border-width) solid var(--border);
    border-radius: var(--radius);
    padding: 1.375rem;
    transition: transform 200ms ease, border-color 200ms ease;
}
.tech-card:hover {
    transform: translateY(-2px);
    border-color: rgba(0, 163, 255, 0.3);
}
.tc-icon {
    width: 2.5rem;
    height: 2.5rem;
    background: rgba(0, 163, 255, 0.1);
    border-radius: 0.625rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--accent-2);
}
.tc-icon svg { width: 1.125rem; height: 1.125rem; }
.tc-body { flex: 1; min-width: 0; }
.tc-body h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 0.375rem;
}
.tc-body p {
    font-size: 0.875rem;
    color: var(--muted);
    line-height: 1.6;
    margin: 0 0 0.75rem;
}
.tc-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
}
.tc-tags span {
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    background: rgba(0, 163, 255, 0.08);
    border: var(--border-width) solid rgba(0, 163, 255, 0.2);
    color: var(--accent-2);
    border-radius: 999px;
    padding: 0.175rem 0.625rem;
}

/* ============================================================
   WHY GRID (Why UPIQU tab)
============================================================ */
.why-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(20rem, 1fr));
    gap: 1.125rem;
}
.why-card {
    display: flex;
    gap: 1.25rem;
    background: var(--surface-3);
    border: var(--border-width) solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    transition: transform 200ms ease, box-shadow 200ms ease;
    align-items: flex-start;
}
.why-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 0.5rem 1.5rem rgba(0, 0, 0, 0.25);
}
.why-icon-wrap {
    width: 3rem;
    height: 3rem;
    background: rgba(31, 212, 197, 0.1);
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--accent);
    border: var(--border-width) solid rgba(31, 212, 197, 0.2);
}
.why-icon-wrap svg { width: 1.375rem; height: 1.375rem; }
.why-body { flex: 1; }
.why-body h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 0.625rem;
    color: var(--text);
}
.why-body p {
    font-size: 0.9rem;
    line-height: 1.65;
    color: var(--muted);
    margin: 0 0 0.625rem;
}
.why-body p:last-child { margin-bottom: 0; }

/* ============================================================
   CONTACT LAYOUT
============================================================ */
.contact-layout {
    display: block;
}

.contact-form {
    display: grid;
    gap: 0.875rem;
}
.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.875rem;
}
label {
    display: grid;
    gap: 0.375rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--muted);
}
input, textarea {
    width: 100%;
    border-radius: 0.625rem;
    border: var(--border-width) solid var(--border);
    background: rgba(6, 12, 32, 0.8);
    color: var(--text);
    padding: 0.7rem 0.875rem;
    font: inherit;
    font-size: 0.9rem;
    outline: none;
    transition: border-color 150ms ease, box-shadow 150ms ease;
}
input:focus, textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(31, 212, 197, 0.12);
}
textarea { min-height: 8rem; resize: vertical; }

.consent {
    display: flex;
    align-items: flex-start;
    gap: 0.625rem;
    font-size: 0.875rem;
    color: var(--muted);
}
.consent input {
    width: 1.125rem;
    height: 1.125rem;
    margin-top: 0.125rem;
    padding: 0;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
    color: #001220;
    font-weight: 700;
    font-size: 0.95rem;
    border-radius: 0.625rem;
    padding: 0.7rem 1.5rem;
    cursor: pointer;
    width: fit-content;
    transition: opacity 150ms ease, transform 150ms ease;
}
.btn:hover { opacity: 0.88; transform: translateY(-1px); }
.btn[disabled] { opacity: 0.55; cursor: not-allowed; transform: none; }

.status {
    min-height: 1.5rem;
    font-weight: 600;
    font-size: 0.9rem;
}
.status.ok  { color: var(--ok); }
.status.err { color: var(--danger); }


/* ============================================================
   FOOTER
============================================================ */
footer {
    margin-top: 2.5rem;
    color: var(--muted);
    font-size: 0.85rem;
    text-align: center;
    line-height: 2;
}
.footer-links { margin-top: 0.25rem; }
.footer-links a { color: var(--muted); }
.footer-links a:hover { color: var(--accent); }

/* ============================================================
   PRIVACY PAGE
============================================================ */
.privacy-page {
    --maxw: 56rem;
}
.privacy-page body {
    line-height: 1.7;
}
.privacy-page .wrap {
    width: min(var(--maxw), 92vw);
    margin: 2rem auto 4rem;
    padding: 2rem;
    background: rgba(13, 27, 56, 0.7);
    border: var(--border-width) solid var(--border);
    border-radius: var(--radius-lg);
}
.privacy-page h1, .privacy-page h2 { margin-top: 0; }
.privacy-page h1 { font-size: 1.75rem; margin-bottom: 0.5rem; }
.privacy-page h2 { font-size: 1.2rem; margin-bottom: 0.5rem; margin-top: 1.25rem; }
.privacy-page p { color: var(--muted); margin: 0 0 0.875rem; font-size: 0.95rem; }
.privacy-page hr {
    border: none;
    border-top: var(--border-width) solid var(--border);
    margin: 1.5rem 0;
}

/* ============================================================
   RESPONSIVE
============================================================ */
@media (max-width: 52rem) {
    .hero-section {
        grid-template-columns: 1fr;
        padding: 2.5rem 0 1.5rem;
    }
    .hero-visual { display: none; }

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

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

    .main-tabs { gap: 0; }
    .nav-tab   { padding: 0.45rem 0.65rem; font-size: 0.8rem; }
}

@media (max-width: 36rem) {
    .topbar-inner { flex-wrap: wrap; gap: 0.5rem; }
    .main-tabs { order: 3; width: 100%; justify-content: center; flex-wrap: wrap; }

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

    .tab-panel { padding: 1.25rem; }

    .why-card, .tech-card {
        flex-direction: column;
        gap: 0.875rem;
    }
}