/* =============================================================================
   BASE.CSS — Tokens compartidos + Header + Footer
   Cargado por todas las páginas del sitio.
   ============================================================================= */

/* ── Tokens ─────────────────────────────────────────────────────────────────── */
:root {
    --brand:       #9e0000;
    --brand-hover: #670a0a;
    --brand-light: #fff3f3;
    --accent:      #9e0000;

    --font-display: 'Playfair Display', Georgia, serif;
    --font-body:    'DM Sans', system-ui, sans-serif;
    --font-brand:   'Be Vietnam Pro', sans-serif;

    --radius-sm: 5px;
    --radius-md: 8px;
    --radius-lg: 15px;
    --radius-xl: 30px;

    --transition: 0.2s cubic-bezier(0.25, 0.1, 0.25, 1);
}

[data-theme="light"] {
    --bg-page:       #eaeaea;
    --bg-panel:      #f5f5f5;
    --bg-panel-alt:  #efefef;
    --bg-input:      #ffffff;
    --bg-input-hover:#f8f8f8;
    --border:        #d8d8d8;
    --text-primary:  #111111;
    --text-secondary:#555555;
    --text-muted:    #999999;
    --border-focus:  var(--brand);
    color-scheme: light;
}

[data-theme="dark"] {
    --brand:         #c94444;
    --brand-hover:   #a03030;
    --accent:        #c94444;
    --bg-page:       #111010;
    --bg-panel:      #191716;
    --bg-panel-alt:  #141312;
    --bg-input:      #1f1d1c;
    --bg-input-hover:#262422;
    --border:        #2e2b29;
    --text-primary:  #f0ede8;
    --text-secondary:#a09890;
    --text-muted:    #5c5450;
    --border-focus:  #9e3a3a;
    color-scheme: dark;
}

/* ── Reset base ──────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; }

body {
    font-family: var(--font-body);
    background: var(--bg-page);
    color: var(--text-primary);
    min-height: 100svh;
    -webkit-font-smoothing: antialiased;
    transition: background var(--transition), color var(--transition);
}

/* ── Theme icons ─────────────────────────────────────────────────────────────── */
[data-theme="light"] .icon-sun  { display: none; }
[data-theme="light"] .icon-moon { display: block; }
[data-theme="dark"]  .icon-moon { display: none; }
[data-theme="dark"]  .icon-sun  { display: block; }

/* ── Header ──────────────────────────────────────────────────────────────────── */
.app-header {
    position: sticky;
    top: 0;
    z-index: 50;
    /* Siempre oscuro — identidad visual EvilGrow */
    background: rgba(6, 6, 6, 0.97);
    border-bottom: 1px solid rgba(103, 10, 10, 0.4);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 0 24px;
    height: 80px;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
}

.app-logo {
    grid-column: 2;
    grid-row: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
}

.app-logo-img {
    height: 60px;
    width: auto;
    display: block;
    mix-blend-mode: screen;
    filter: brightness(1.1);
}

.app-header-nav {
    grid-column: 1;
    grid-row: 1;
    display: flex;
    align-items: center;
    gap: 4px;
    justify-content: flex-start;
}

.app-header-nav--hidden { display: none !important; }

/* ── Actions group (col 3) — Calculadora link + toggle + hamburger ───────────── */
.app-header-actions {
    grid-column: 3;
    grid-row: 1;
    display: flex;
    align-items: center;
    gap: 4px;
    justify-self: end;
}

/* ── Hamburger button ────────────────────────────────────────────────────────── */
.nav-hamburger {
    display: none;
    width: 36px;
    height: 36px;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: rgba(255, 255, 255, 0.06);
    color: rgba(255, 243, 243, 0.65);
    cursor: pointer;
    transition: background var(--transition), border-color var(--transition), color var(--transition);
}
.nav-hamburger:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 243, 243, 0.28);
    color: #fff3f3;
}
.nav-hamburger svg { width: 16px; height: 16px; }
.nav-hamburger .icon-close { display: none; }
.nav-hamburger[aria-expanded="true"] .icon-burger { display: none; }
.nav-hamburger[aria-expanded="true"] .icon-close  { display: block; }

@media (max-width: 768px) {
    .app-header {
        height: 64px;
        padding: 0 16px;
    }
    .app-logo-img { height: 42px; }
    .app-header-nav { display: none !important; }
    /* Calculadora link hidden on mobile — accessible via hamburger menu */
    .app-header-actions > .header-nav-link { display: none; }
    /* Hamburger visible on mobile */
    .nav-hamburger { display: flex; }
}

/* ── Mobile nav panel ────────────────────────────────────────────────────────── */
.mobile-nav {
    position: fixed;
    top: 64px; /* matches header height at ≤768px */
    left: 0;
    right: 0;
    z-index: 49;
    background: rgba(6, 6, 6, 0.98);
    border-bottom: 1px solid rgba(103, 10, 10, 0.4);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    padding: 8px 12px 16px;
    display: flex;
    flex-direction: column;
    visibility: hidden;
    opacity: 0;
    transform: translateY(-6px);
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0s 0.2s;
}
.mobile-nav.is-open {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
    transition: opacity 0.2s ease, transform 0.2s ease;
}
.mobile-nav-link {
    font-family: 'Be Vietnam Pro', sans-serif;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.09em;
    text-transform: uppercase;
    color: rgba(255, 243, 243, 0.55);
    text-decoration: none;
    padding: 13px 16px;
    border-radius: var(--radius-sm);
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    transition: color var(--transition), background var(--transition);
}
.mobile-nav-link:last-child { border-bottom: none; }
.mobile-nav-link:hover,
.mobile-nav-link:active {
    color: #fff3f3;
    background: rgba(255, 255, 255, 0.06);
}
.mobile-nav-link--active {
    color: #ff8080;
    background: rgba(158, 0, 0, 0.15);
}

.header-nav-link {
    font-family: 'Be Vietnam Pro', sans-serif;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: rgba(255, 243, 243, 0.5);
    text-decoration: none;
    padding: 5px 10px;
    border-radius: var(--radius-sm);
    transition: color var(--transition), background var(--transition);
}

.header-nav-link:hover {
    color: #fff3f3;
    background: rgba(255, 255, 255, 0.07);
}

.header-nav-link--active {
    color: #ff8080;
    background: rgba(158, 0, 0, 0.18);
}

.header-coffee-btn {
    display: flex;
    align-items: center;
    gap: 5px;
    font-family: 'Be Vietnam Pro', sans-serif;
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #fff3f3;
    text-decoration: none;
    border: 1px solid rgba(158, 0, 0, 0.7);
    border-radius: var(--radius-xl);
    padding: 6px 14px;
    background: rgba(158, 0, 0, 0.65);
    transition: background var(--transition), border-color var(--transition);
    white-space: nowrap;
}

.header-coffee-btn:hover {
    background: rgba(158, 0, 0, 0.9);
    border-color: var(--brand);
}

@media (max-width: 480px) {
    .header-coffee-btn { padding: 6px 8px; }
}

.theme-toggle {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: rgba(255, 255, 255, 0.06);
    color: rgba(255, 243, 243, 0.65);
    cursor: pointer;
    transition: background var(--transition), border-color var(--transition), color var(--transition);
    flex-shrink: 0;
}

.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 243, 243, 0.28);
    color: #fff3f3;
}

.theme-toggle svg { width: 16px; height: 16px; }

/* ── Footer ──────────────────────────────────────────────────────────────────── */
.app-footer {
    background: rgba(6, 6, 6, 0.97);
    border-top: 1px solid rgba(103, 10, 10, 0.4);
    padding: 36px 24px 28px;
    color: rgba(255, 243, 243, 0.5);
    color-scheme: dark;
}

.app-footer-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 18px;
    max-width: 720px;
    margin: 0 auto;
}

.footer-logo-link {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.footer-logo-img {
    height: 44px;
    width: auto;
    display: block;
    mix-blend-mode: screen;
    filter: brightness(1.1);
}

.footer-nav {
    display: flex;
    align-items: center;
    gap: 2px;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-sep {
    color: rgba(255, 243, 243, 0.18);
    font-size: 0.65rem;
    padding: 0 2px;
    user-select: none;
}

.footer-link {
    font-family: 'Be Vietnam Pro', sans-serif;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.09em;
    text-transform: uppercase;
    color: rgba(255, 243, 243, 0.4);
    text-decoration: none;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    transition: color var(--transition), background var(--transition);
}

.footer-link:hover {
    color: #fff3f3;
    background: rgba(255, 255, 255, 0.07);
}

.footer-social {
    display: flex;
    gap: 8px;
}

.footer-social-btn {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.05);
    color: rgba(255, 243, 243, 0.45);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: background var(--transition), border-color var(--transition), color var(--transition), transform var(--transition);
}

.footer-social-btn:hover {
    background: rgba(158, 0, 0, 0.2);
    border-color: rgba(158, 0, 0, 0.55);
    color: #ff8080;
    transform: translateY(-2px);
}

.footer-copy {
    font-size: 0.62rem;
    color: rgba(255, 243, 243, 0.2);
    font-family: var(--font-body);
    width: 100%;
    text-align: center;
    padding-top: 16px;
    margin-top: 2px;
    border-top: 1px solid rgba(103, 10, 10, 0.25);
}

.footer-copy-link {
    color: rgba(255, 243, 243, 0.3);
    text-decoration: none;
    transition: color var(--transition);
}

.footer-copy-link:hover { color: rgba(255, 243, 243, 0.65); }

/* ── Reduced motion ──────────────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration:        0.01ms !important;
        animation-iteration-count: 1      !important;
        transition-duration:       0.01ms !important;
    }
}