/* Grupo Silva / Nelson — shared design tokens (Operate + login) */
:root {
    --forest-0: #0f1f17;
    --forest-1: #173226;
    --green: #2f9e5b;
    --green-deep: #1e6b3c;
    --gold: #c9a227;
    --canvas: #f4f1ea;
    --card: #ffffff;
    --ink: #1a2420;
    --muted: #5c6b63;
    --line: #e4ddd0;
    --danger: #c0392b;
    --warn: #a67c00;
    --info: #2a6f7a;

    --primary: var(--green);
    --secondary: var(--green-deep);
    --accent: var(--gold);
    --dark: var(--ink);
    --light: var(--canvas);
    --gray: var(--muted);
    --border-radius: 10px;
    --transition: 180ms cubic-bezier(0.16, 1, 0.3, 1);

    --font-ui: "Source Sans 3", "Segoe UI", system-ui, sans-serif;
    --font-display: "Literata", Georgia, serif;
    --shadow-soft: 0 8px 24px rgba(15, 31, 23, 0.08);
}

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

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-ui);
    line-height: 1.55;
    color: var(--ink);
    background: var(--canvas);
    font-size: 1rem;
}

::selection {
    background: color-mix(in srgb, var(--green) 35%, transparent);
    color: var(--ink);
}

:focus-visible {
    outline: 2px solid var(--green);
    outline-offset: 2px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Legacy marketing bits kept for frontend/index.html if served */
.navbar {
    background: var(--forest-0);
    color: #e8f2ea;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 12px rgba(15, 31, 23, 0.18);
}
.navbar .container { display: flex; justify-content: space-between; align-items: center; }
.navbar-brand h1 { font-family: var(--font-display); font-size: 1.5rem; display: flex; align-items: center; gap: 0.5rem; }
.navbar-brand p { font-size: 0.9rem; opacity: 0.85; color: #a3bfad; }
.nav-menu { list-style: none; display: flex; gap: 1.5rem; align-items: center; }
.nav-link { color: #e8f2ea; text-decoration: none; font-weight: 500; }
.nav-link:hover, .nav-link.active { color: #fff; }
.btn-login {
    background: transparent; padding: 0.45rem 0.9rem; border-radius: 999px;
    border: 1px solid color-mix(in srgb, #a3bfad 55%, transparent);
}
.btn-login:hover { border-color: #e8f2ea; }

.btn {
    padding: 0.7rem 1.4rem; border: none; border-radius: 999px; cursor: pointer;
    font-size: 1rem; font-weight: 650; transition: var(--transition);
    text-decoration: none; display: inline-block; font-family: inherit;
}
.btn-primary { background: var(--green); color: #062012; }
.btn-primary:hover { background: color-mix(in srgb, var(--green) 85%, white); }
.btn-secondary {
    background: transparent; color: #e8f2ea;
    border: 1px solid color-mix(in srgb, #a3bfad 55%, transparent);
}
.btn-secondary:hover { border-color: #e8f2ea; }

/* Language Switcher */
.lang-switcher { display: flex; gap: 0.25rem; align-items: center; margin-left: 1rem; }
.lang-btn {
    background: rgba(255,255,255,0.12); color: #e8f2ea;
    border: 1px solid rgba(255,255,255,0.22);
    padding: 0.25rem 0.5rem; border-radius: 6px; cursor: pointer;
    font-size: 0.8rem; font-weight: 650; transition: var(--transition); line-height: 1;
    font-family: inherit;
}
.lang-btn:hover { background: rgba(255,255,255,0.22); }
.lang-btn.active { background: #fff; color: var(--forest-0); border-color: #fff; }

.lang-switcher--dark .lang-btn {
    background: color-mix(in srgb, var(--ink) 4%, transparent);
    color: var(--ink); border-color: var(--line);
}
.lang-switcher--dark .lang-btn:hover { background: color-mix(in srgb, var(--ink) 8%, transparent); }
.lang-switcher--dark .lang-btn.active {
    background: var(--green); color: #062012; border-color: var(--green);
}

@media (max-width: 768px) {
    .nav-menu { gap: 0.85rem; font-size: 0.9rem; }
}