/* ============================================================
   Silva Tower — design system
   Dark, elegant, single-accent (tower gold on deep navy).
   ============================================================ */

:root {
    /* Palette */
    --bg-0: #0b0f1a;          /* page background */
    --bg-1: #101626;          /* raised surfaces */
    --bg-card: #141b2e;       /* cards */
    --bg-card-hover: #18203a;
    --border: #232c47;
    --border-strong: #31406b;

    --text-1: #eef1f8;        /* headings */
    --text-2: #c6cde0;        /* body */
    --text-3: #97a1bd;        /* secondary */
    --text-4: #67718f;        /* faint */

    --gold-300: #ffd97a;
    --gold-400: #f0b429;      /* accent */
    --gold-500: #d99a1b;
    --gold-glow: rgba(240, 180, 41, 0.14);

    --red-400: #f47272;
    --green-400: #57cf8b;

    /* Shape & type */
    --r: 10px;
    --r-lg: 16px;
    --font: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;

    --container: 1120px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    font-family: var(--font);
    background: var(--bg-0);
    color: var(--text-2);
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main { flex: 1; }

h1, h2, h3, h4 { color: var(--text-1); line-height: 1.2; font-weight: 700; }

a { color: var(--gold-400); text-decoration: none; }
a:hover { color: var(--gold-300); }

img { max-width: 100%; }

/* Drapo cloak — class removed after render (never use [d-cloak] attribute selectors) */
.cloak { display: none; }
.cloak-nav { visibility: hidden; }

.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    font-family: inherit;
    font-weight: 600;
    font-size: .95rem;
    border: 1px solid transparent;
    border-radius: var(--r);
    padding: .65rem 1.35rem;
    cursor: pointer;
    transition: background .15s ease, border-color .15s ease, color .15s ease, transform .1s ease;
    white-space: nowrap;
}
.btn:active { transform: translateY(1px); }

.btn--primary {
    background: var(--gold-400);
    color: #16120a;
}
.btn--primary:hover { background: var(--gold-300); color: #16120a; }

.btn--ghost {
    background: transparent;
    color: var(--text-1);
    border-color: var(--border-strong);
}
.btn--ghost:hover { border-color: var(--gold-400); color: var(--gold-300); }

.btn--sm { padding: .45rem .95rem; font-size: .85rem; }
.btn--lg { padding: .85rem 1.75rem; font-size: 1.05rem; }

.btn--loading { opacity: .6; pointer-events: none; }

/* ---------- Badge ---------- */
.badge {
    display: inline-block;
    font-size: .78rem;
    font-weight: 600;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--gold-400);
    background: var(--gold-glow);
    border: 1px solid rgba(240, 180, 41, .35);
    border-radius: 999px;
    padding: .3rem .9rem;
}

/* ---------- Navbar ---------- */
.navbar {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(11, 15, 26, .85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.navbar__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
    gap: 1rem;
}

.navbar__brand {
    display: inline-flex;
    align-items: center;
    gap: .6rem;
    cursor: pointer;
    color: var(--text-1);
    font-weight: 800;
    font-size: 1.15rem;
    letter-spacing: -.01em;
}
.navbar__brand:hover { color: var(--text-1); }
.navbar__logo-img { display: block; border-radius: 8px; }

.navbar__links {
    display: flex;
    align-items: center;
    gap: 1.4rem;
}

.nav-link {
    color: var(--text-3);
    font-weight: 500;
    font-size: .95rem;
    cursor: pointer;
    transition: color .15s ease;
}
.nav-link:hover { color: var(--text-1); }

.navbar__actions {
    display: flex;
    align-items: center;
    gap: .75rem;
}

.lang-toggle {
    font-family: inherit;
    font-weight: 700;
    font-size: .8rem;
    letter-spacing: .05em;
    color: var(--text-3);
    background: transparent;
    border: 1px solid var(--border-strong);
    border-radius: var(--r);
    padding: .4rem .7rem;
    cursor: pointer;
    transition: color .15s ease, border-color .15s ease;
}
.lang-toggle:hover { color: var(--gold-300); border-color: var(--gold-400); }

.menu-toggle {
    display: none;
    font-size: 1.4rem;
    color: var(--text-1);
    background: transparent;
    border: none;
    cursor: pointer;
}

/* Mobile menu overlay — display:flex so d-if insertion isn't fought by CSS */
.navbar__mobile {
    position: fixed;
    inset: 0;
    z-index: 100;
    background: var(--bg-0);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1.75rem;
    font-size: 1.2rem;
}

.menu-close {
    position: absolute;
    top: 1.25rem;
    right: 1.5rem;
    font-size: 1.5rem;
    color: var(--text-1);
    background: transparent;
    border: none;
    cursor: pointer;
}

/* ---------- Hero ---------- */
.hero {
    position: relative;
    padding: 7rem 0 6rem;
    text-align: center;
    background:
        radial-gradient(ellipse 60% 45% at 50% 0%, rgba(240, 180, 41, .08), transparent),
        var(--bg-0);
    overflow: hidden;
}

.hero__inner { position: relative; }

.hero__eyebrow { margin-bottom: 1.5rem; }

.hero__title {
    font-size: clamp(2.4rem, 6vw, 4rem);
    font-weight: 800;
    letter-spacing: -.02em;
    margin-bottom: 1.25rem;
}
.hero__title-accent { color: var(--gold-400); }

.hero__subtitle {
    max-width: 640px;
    margin: 0 auto 2.25rem;
    font-size: 1.15rem;
    color: var(--text-3);
}

.hero__cta {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

/* ---------- Sections ---------- */
.section { padding: 5rem 0; }
.section--alt { background: var(--bg-1); }

.section__head { text-align: center; margin-bottom: 3rem; }
.section__head h2 {
    font-size: clamp(1.6rem, 3.5vw, 2.25rem);
    margin: .75rem 0 .5rem;
}
.section__head p { color: var(--text-3); max-width: 560px; margin: 0 auto; }

/* ---------- Project cards ---------- */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
}

.project-card {
    display: flex;
    flex-direction: column;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--r-lg);
    padding: 1.75rem;
    transition: border-color .15s ease, background .15s ease, transform .15s ease;
}
.project-card:hover {
    border-color: var(--border-strong);
    background: var(--bg-card-hover);
    transform: translateY(-2px);
}

.project-card__head {
    display: flex;
    align-items: center;
    gap: .9rem;
    margin-bottom: 1rem;
}

.project-card__logo {
    width: 44px;
    height: 44px;
    border-radius: var(--r);
    background: var(--bg-1);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.project-card__logo img { width: 26px; height: 26px; }

.project-card__name { font-size: 1.15rem; font-weight: 700; color: var(--text-1); }
.project-card__tagline { font-size: .85rem; color: var(--gold-400); font-weight: 600; }

.project-card__desc { color: var(--text-3); font-size: .95rem; flex: 1; }

.project-card__foot { margin-top: 1.4rem; }

.project-card__link {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    font-weight: 600;
    font-size: .9rem;
}
.project-card__link::after { content: "→"; transition: transform .15s ease; }
.project-card__link:hover::after { transform: translateX(3px); }

/* ---------- Pitch / prose blocks ---------- */
.prose { max-width: 720px; margin: 0 auto; }
.prose h2 { font-size: 1.5rem; margin: 2.5rem 0 .75rem; }
.prose p { margin-bottom: 1rem; color: var(--text-2); }

/* ---------- CTA band ---------- */
.cta-band {
    text-align: center;
    background: var(--bg-1);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    padding: 4rem 0;
}
.cta-band h2 { font-size: clamp(1.4rem, 3vw, 2rem); margin-bottom: 1.75rem; }

/* ---------- Forms ---------- */
.form-card {
    max-width: 520px;
    margin: 0 auto;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--r-lg);
    padding: 2.25rem;
}

.form-group { margin-bottom: 1.25rem; }

.form-group label {
    display: block;
    font-weight: 600;
    font-size: .9rem;
    color: var(--text-1);
    margin-bottom: .4rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: .75rem 1rem;
    background: var(--bg-1);
    border: 1px solid var(--border);
    border-radius: var(--r);
    color: var(--text-1);
    font-family: inherit;
    font-size: .95rem;
    transition: border-color .15s ease;
}
.form-group textarea { resize: vertical; }

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--gold-400);
}

/* display:flex so d-if insertion isn't fought by CSS */
.form-error {
    display: flex;
    align-items: center;
    gap: .5rem;
    color: var(--red-400);
    background: rgba(244, 114, 114, .08);
    border: 1px solid rgba(244, 114, 114, .3);
    border-radius: var(--r);
    padding: .7rem 1rem;
    font-size: .9rem;
    margin-bottom: 1rem;
}

.form-success { text-align: center; padding: 1rem 0; }
.form-success__icon { font-size: 3rem; margin-bottom: 1rem; }

/* ---------- Footer ---------- */
.footer {
    background: var(--bg-1);
    border-top: 1px solid var(--border);
    padding: 3.5rem 0 2rem;
    margin-top: auto;
}

.footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 2.5rem;
    margin-bottom: 2.5rem;
}

.footer__brand { font-weight: 800; font-size: 1.1rem; color: var(--text-1); margin-bottom: .75rem; }
.footer__tagline { color: var(--text-4); font-size: .9rem; max-width: 320px; }

.footer__col h4 {
    font-size: .8rem;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--text-4);
    margin-bottom: 1rem;
}

.footer__col a {
    display: block;
    color: var(--text-3);
    font-size: .9rem;
    margin-bottom: .55rem;
    cursor: pointer;
}
.footer__col a:hover { color: var(--text-1); }

.footer__bottom {
    border-top: 1px solid var(--border);
    padding-top: 1.5rem;
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    color: var(--text-4);
    font-size: .85rem;
}

/* ---------- Not found ---------- */
.notfound {
    text-align: center;
    padding: 7rem 1.5rem;
}
.notfound__code {
    font-size: 5rem;
    font-weight: 800;
    color: var(--gold-400);
    line-height: 1;
    margin-bottom: 1rem;
}
.notfound h1 { font-size: 1.75rem; margin-bottom: .75rem; }
.notfound p { color: var(--text-3); margin-bottom: 2rem; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
    .navbar__links { display: none; }
    .menu-toggle { display: block; }

    .hero { padding: 4.5rem 0 4rem; }
    .hero__title br { display: none; }

    .section { padding: 3.5rem 0; }

    .footer__grid { grid-template-columns: 1fr; gap: 2rem; }
}