/* ==============================================================
   VARIABLES
   ============================================================== */
:root {
    /* Paleta */
    --bg:           #07080f;
    --bg-alt:       #0b0e1a;
    --night:        #111d38;
    --silver:       #b0bcce;
    --silver-dim:   #5e6e88;
    --gold:         #c9a84c;
    --gold-dim:     #7a6030;
    --gold-pale:    rgba(201,168,76,.08);
    --white:        #dce4f0;
    --veladora:     rgba(5, 14, 52, 0.93);

    /* Tipografía  */
    --font-display: 'freight-display-pro', Georgia, serif;
    --font-body: 'acumin-pro', system-ui, sans-serif;

    /* Layout */
    --nav-h: 72px;
    --radius: 0;
}

/* ==============================================================
   RESET & BASE
   ============================================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html   { scroll-behavior: smooth; }
body   {
    background: var(--bg);
    color: var(--silver);
    font-family: var(--font-body);
    font-weight: 300;
    line-height: 1.85;
    overflow-x: hidden;
}
img    { max-width: 100%; display: block; }
a      { color: inherit; }

/* Offset de secciones bajo navbar fijo */
section[id] { scroll-margin-top: var(--nav-h); }

/* ==============================================================
   CAPA DE GRANO CINEMATOGRÁFICO
   ============================================================== */
.grain {
    position: fixed; inset: 0;
    pointer-events: none; z-index: 9000;
    opacity: .03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    background-size: 200px 200px;
    animation: grain 0.6s steps(2) infinite;
}
@keyframes grain {
    0%   { transform: translate(0,0); }
    25%  { transform: translate(-5px, 3px); }
    50%  { transform: translate(4px, -4px); }
    75%  { transform: translate(-3px, 5px); }
    100% { transform: translate(3px, -2px); }
}

/* ==============================================================
   VELADORA — overlay de transición cinemática (gel azul)
   ============================================================== */
#veladora {
    position: fixed; inset: 0;
    z-index: 8999;
    background: var(--veladora);
    pointer-events: none;
    opacity: 0;
    transition: opacity .38s ease;
}
#veladora.on { opacity: 1; pointer-events: all; }

/* ==============================================================
   NAVEGACIÓN
   ============================================================== */
#nav {
    position: fixed; top: 0; left: 0; right: 0;
    z-index: 900;
    height: var(--nav-h);
    display: flex; align-items: center;
    justify-content: space-between;
    padding: 0 4rem;
    transition: background .4s ease, border-color .4s ease;
}
#nav.scrolled {
    background: rgba(7,8,15,.94);
    backdrop-filter: blur(14px) saturate(1.4);
    border-bottom: 1px solid rgba(201,168,76,.1);
}

/* Logo */
.nav-logo {
    text-decoration: none;
    display: flex; align-items: center;
}
.nav-logo img {
    height: 65px; width: auto;
    /*filter: brightness(0) invert(1);*/
}
.nav-logo-text {
    font-family: var(--font-display);
    font-size: 1.25rem; font-weight: 300;
    letter-spacing: .18em; color: var(--white);
}
.nav-logo-text em {
    color: var(--gold); font-style: normal;
}

/* Links desktop */
.nav-links {
    display: flex; gap: 2.8rem;
    list-style: none;
}
.nav-links a {
    font-size: .7rem; font-weight: 400;
    letter-spacing: .22em; text-transform: uppercase;
    color: var(--silver-dim); text-decoration: none;
    transition: color .25s;
    position: relative; padding-bottom: 2px;
}
.nav-links a::after {
    content: '';
    position: absolute; bottom: -2px; left: 0;
    width: 0; height: 1px;
    background: var(--gold);
    transition: width .3s ease;
}
.nav-links a:hover { color: var(--gold); }
.nav-links a:hover::after { width: 100%; }

/* Hamburger */
.burger {
    display: none;
    flex-direction: column; gap: 5px;
    background: none; border: none;
    cursor: pointer; padding: 4px;
    z-index: 910;
}
.burger span {
    display: block; width: 24px; height: 1px;
    background: var(--silver);
    transition: transform .3s, opacity .3s;
}
.burger.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.burger.open span:nth-child(2) { opacity: 0; }
.burger.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* Menú móvil */
#mobile-nav {
    display: none;
    position: fixed; inset: 0;
    background: rgba(7,8,15,.98);
    z-index: 905;
    flex-direction: column;
    align-items: center; justify-content: center;
    gap: 2.5rem;
}
#mobile-nav.open { display: flex; }
#mobile-nav a {
    font-family: var(--font-display);
    font-size: 2.4rem; font-weight: 300;
    letter-spacing: .06em; color: var(--white);
    text-decoration: none; transition: color .25s;
}
#mobile-nav a:hover { color: var(--gold); }

@media (max-width: 900px) {
    #nav { padding: 0 1.5rem; }
    .nav-links { display: none; }
    .burger { display: flex; }
}

/* ==============================================================
   HERO — Efecto Noche Americana
   ============================================================== */
#hero {
    position: relative;
    height: 100svh; min-height: 640px;
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    overflow: hidden;
}

/* Imagen de fondo (día por defecto) */
.hero-bg {
    position: absolute; inset: 0;
    background: linear-gradient(155deg, #2a4a80 0%, #0e1f48 45%, #07080f 100%);
    background-size: cover;
    background-position: center;
    will-change: filter;
    transition: filter 1.3s cubic-bezier(.4,0,.2,1);
    background-image: url('img/hero.jpg');
}

/* Estado DÍA */
.hero-bg.day  { filter: none; }

/* Estado NOCHE AMERICANA
   brightness  → oscurece la imagen (simula subexposición)
   contrast    → realza sombras y altas luces
   saturate    → desatura para eliminar el exceso de color de día
   sepia       → introduce tonalidad fría
   hue-rotate  → vira hacia el azul
*/
.hero-bg.night {
    filter: brightness(.4) contrast(1.35) saturate(.1) sepia(.4) hue-rotate(190deg);
}

/* Degradado suave sobre la imagen */
.hero-bg::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(
        to bottom,
        rgba(7,8,15,.15) 0%,
        rgba(7,8,15,.05) 45%,
        rgba(7,8,15,.75) 100%
    );
}

/* Contenido del hero */
.hero-inner {
    position: relative; z-index: 2;
    text-align: center; padding: 0 2rem;
    display: flex; flex-direction: column;
    align-items: center; gap: 1.6rem;
}

.hero-logo img {
    height: 275px; width: auto;
    filter: brightness(0) invert(1);
    opacity: .9;
    display:none;
}

.hero-sub {
    font-size: .68rem; font-weight: 400;
    letter-spacing: .38em; text-transform: uppercase;
    color: var(--gold);
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.6rem, 5.5vw, 5.2rem);
    font-weight: 300; 
    line-height: 1.08;
    color: var(--white); 
    letter-spacing: .015em;
}

/* Botón toggle día/noche */
.btn-night {
    display: inline-flex; align-items: center; gap: .65rem;
    font-family: var(--font-body);
    font-size: .7rem; font-weight: 400;
    letter-spacing: .22em; text-transform: uppercase;
    color: var(--silver-dim);
    background: rgba(255,255,255,.04);
    border: 1px solid rgba(255,255,255,.12);
    padding: .75rem 1.8rem;
    cursor: pointer; border-radius: 0;
    backdrop-filter: blur(6px);
    transition: color .3s, border-color .3s, background .3s;
}
.btn-night:hover {
    color: var(--white);
    border-color: rgba(201,168,76,.4);
    background: rgba(201,168,76,.05);
}
.btn-night .bi {
    font-size: 1.05rem;
    transition: transform .7s ease;
}
.btn-night:hover .bi { transform: rotate(180deg); }

/* Flecha de scroll */
.scroll-cue {
    position: absolute; bottom: 2rem; left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex; flex-direction: column; align-items: center; gap: .4rem;
}
.scroll-cue span {
    font-size: .6rem; letter-spacing: .28em;
    text-transform: uppercase; color: var(--silver-dim);
}
.scroll-line {
    width: 1px; height: 44px;
    background: linear-gradient(to bottom, var(--gold), transparent);
    transform-origin: top;
    animation: scroll-pulse 2.2s ease-in-out infinite;
}
@keyframes scroll-pulse {
    0%,100% { opacity: .25; transform: scaleY(.6); }
    55%      { opacity: 1;   transform: scaleY(1); }
}

/* ==============================================================
   SECCIONES — base compartida
   ============================================================== */
.sec { padding: 9rem 0; position: relative; }
.sec-alt { background: var(--bg-alt); }

.eyebrow {
    font-size: .65rem; font-weight: 400;
    letter-spacing: .35em; text-transform: uppercase;
    color: var(--gold); margin-bottom: .8rem;
    display: flex; align-items: center; gap: .9rem;
}
.eyebrow::before {
    content: ''; display: inline-block;
    width: 28px; height: 1px; background: var(--gold);
    flex-shrink: 0;
}

.sec-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 3.8vw, 3.6rem);
    font-weight: 300; line-height: 1.1;
    color: var(--white); letter-spacing: .01em;
    margin-bottom: 1.8rem;
}
.sec-title em { font-style: italic; color: var(--gold); }

.sec-body {
    font-size: 1rem; font-weight: 300;
    color: var(--silver); line-height: 1.9;
}

.divider {
    width: 36px; height: 1px;
    background: var(--gold); margin: 1.6rem 0;
}

/* Número decorativo de fondo */
.deco-num {
    font-family: var(--font-display);
    font-size: 14rem; font-weight: 300; line-height: 1;
    color: rgba(201,168,76,.04);
    position: absolute; right: 3%; top: 2rem;
    pointer-events: none; user-select: none;
    letter-spacing: -.02em;
}

/* Fade-up al entrar en viewport */
.fade-up {
    opacity: 0; transform: translateY(28px);
    transition: opacity .75s ease, transform .75s ease;
}
.fade-up.in { opacity: 1; transform: translateY(0); }

/* ==============================================================
   QUIÉNES SOMOS
   ============================================================== */
#quienes .inner { max-width: 680px; }

/* Línea vertical decorativa lateral */
#quienes::before {
    content: '';
    position: absolute; top: 9rem; left: 0;
    width: 1px; height: 120px;
    background: linear-gradient(to bottom, transparent, var(--gold-dim), transparent);
}

/* ==============================================================
   PRODUCCIONES
   ============================================================== */

/* Póster */
.poster-wrap { position: relative; }
.poster-frame {
    position: relative; overflow: hidden;
}
.poster-frame img {
    width: 100%; aspect-ratio: 2/3;
    object-fit: cover;
    filter: saturate(.75) contrast(1.05);
    transition: filter .6s ease, transform .6s ease;
    display: block;
}
.poster-frame:hover img {
    filter: saturate(.95) contrast(1.05);
    transform: scale(1.025);
}
/* Marco interior dorado */
.poster-frame::before {
    content: ''; position: absolute; inset: 10px;
    border: 1px solid rgba(201,168,76,.2);
    z-index: 1; pointer-events: none;
    transition: border-color .4s;
}
.poster-frame:hover::before { border-color: rgba(201,168,76,.5); }
/* Placeholder cuando no hay imagen */
.poster-placeholder {
    aspect-ratio: 2/3;
    background: var(--night);
    display: flex; align-items: center; justify-content: center;
    color: var(--silver-dim);
    font-family: var(--font-display);
    font-size: 1rem; letter-spacing: .1em;
}

/* Nombre de la película */
.film-title {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 3vw, 2.8rem);
    font-weight: 300; color: var(--white);
    line-height: 1.1; letter-spacing: .015em;
    margin-bottom: .4rem;
}

/* Subtítulo de bloque */
.block-label {
    font-size: .68rem; font-weight: 500;
    letter-spacing: .22em; text-transform: uppercase;
    color: var(--gold); margin: 2.2rem 0 .8rem;
}

/* Ficha técnica */
.ficha-row {
    padding: .7rem 0;
    border-bottom: 1px solid rgba(255,255,255,.05);
    display: flex; flex-direction: column; gap: .1rem;
}
.ficha-row:first-of-type { border-top: 1px solid rgba(255,255,255,.05); }
.ficha-key {
    font-size: .6rem; letter-spacing: .22em;
    text-transform: uppercase; color: var(--gold);
}
.ficha-val {
    font-size: .92rem; font-weight: 300; color: var(--white);
}

/* Redes */
.redes {
    display: flex; gap: .8rem; flex-wrap: wrap;
    margin-top: .5rem;
}
.red-btn {
    display: inline-flex; align-items: center; gap: .45rem;
    font-size: .68rem; letter-spacing: .18em;
    text-transform: uppercase; color: var(--silver-dim);
    text-decoration: none;
    border: 1px solid rgba(255,255,255,.1);
    padding: .5rem 1rem;
    transition: color .25s, border-color .25s;
}
.red-btn:hover {
    color: var(--gold);
    border-color: rgba(201,168,76,.35);
}
.red-btn .bi { font-size: .95rem; }

/* ==============================================================
   CONTACTO
   ============================================================== */
.contact-mail {
    font-family: var(--font-display);
    font-size: 1.35rem; font-weight: 300;
    color: var(--gold); text-decoration: none;
    letter-spacing: .06em; display: inline-block;
    margin-top: .5rem; margin-bottom: 3rem;
    transition: color .25s;
}
.contact-mail:hover { color: var(--white); }

/* Formulario */
.f-group { margin-bottom: 1.6rem; }
.f-label {
    display: block;
    font-size: .63rem; letter-spacing: .26em;
    text-transform: uppercase; color: var(--silver-dim);
    margin-bottom: .5rem;
}
.f-input, .f-textarea {
    width: 100%; background: transparent;
    border: none; border-bottom: 1px solid rgba(255,255,255,.12);
    color: var(--white);
    font-family: var(--font-body); font-size: .95rem; font-weight: 300;
    padding: .75rem 0;
    outline: none; border-radius: 0;
    transition: border-color .3s;
}
.f-input::placeholder, .f-textarea::placeholder { color: rgba(255,255,255,.18); }
.f-input:focus, .f-textarea:focus { border-bottom-color: var(--gold); }
.f-textarea { min-height: 110px; resize: vertical; }

.btn-send {
    display: inline-flex; align-items: center; gap: .65rem;
    font-family: var(--font-body);
    font-size: .7rem; font-weight: 400;
    letter-spacing: .28em; text-transform: uppercase;
    color: var(--bg); background: var(--gold);
    border: 1px solid var(--gold);
    padding: .9rem 2.2rem;
    cursor: pointer; border-radius: 0;
    transition: background .3s, color .3s;
    margin-top: .4rem;
}
.btn-send:hover { background: transparent; color: var(--gold); }
.btn-send .bi { font-size: 1rem; }

.form-msg {
    padding: .9rem 1.2rem; margin-bottom: 1.5rem;
    font-size: .9rem; border-left: 2px solid;
}
.form-msg.ok         { border-color: #4caf8a; color: #4caf8a; background: rgba(76,175,138,.06); }
.form-msg.err        { border-color: #c94c4c; color: #c94c4c; background: rgba(201,76,76,.06); }
.form-msg.validation { border-color: var(--gold); color: var(--gold); background: var(--gold-pale); }

/* ==============================================================
   FOOTER
   ============================================================== */
footer {
    padding: 2.5rem 4rem;
    border-top: 1px solid rgba(255,255,255,.05);
    display: flex; align-items: center;
    justify-content: space-between; flex-wrap: wrap; gap: 1rem;
}
.f-brand {
    font-family: var(--font-display);
    font-size: 1rem; font-weight: 300;
    letter-spacing: .16em; color: var(--silver-dim);
}
.f-copy {
    font-size: .7rem; letter-spacing: .08em;
    color: var(--silver-dim);
}

@media (max-width: 768px) {
    .sec { padding: 5.5rem 0; }
    footer { flex-direction: column; text-align: center; padding: 2rem 1.5rem; }
    .deco-num { display: none; }
}