/* ==========================================================================
   Pan de Vida Digital — hoja de estilos única
   Sin frameworks ni dependencias: todo el diseño vive en este archivo.
   Orden: 1 Variables · 2 Base · 3 Fondo · 4 Cabecera · 5 Vasija · 6 Papelito
          7 Botones · 8 Modal · 9 Toast · 10 Pie · 11 Utilidades · 12 Movimiento
   ========================================================================== */

/* 1. Variables ------------------------------------------------------------ */
:root {
    --gold: #d4af37;
    --gold-light: #ffe380;
    --ink: #1e1b18;
    --ink-soft: #5c5446;
    --ink-faint: #8a8274;
    --paper-top: #fcfcf9;
    --paper-bottom: #f5f3e9;
    --bg: #060608;
    --bg-deep: #040406;
    --text: #f8fafc;
    --danger: #b91c1c;

    --font-title: "Cinzel", Georgia, serif;
    --font-body: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", sans-serif;

    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

/* 2. Base ----------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

html { height: 100%; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
    margin: 0;
    height: 100%;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
    background-color: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    -webkit-font-smoothing: antialiased;
    user-select: none;
    -webkit-user-select: none;
}

button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
a { color: inherit; }
h1, h2, h3, p { margin: 0; }

.icon { width: 1em; height: 1em; flex: none; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }

.sr-only {
    position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0;
    overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

[hidden] { display: none !important; }

/* 3. Fondo y atmósfera ---------------------------------------------------- */
.grain {
    position: fixed; inset: 0; z-index: 40; pointer-events: none;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
}

.bg-layer {
    position: absolute; inset: 0; z-index: 0;
    background-size: cover; background-position: center; background-repeat: no-repeat;
    opacity: 0;
    transition: opacity 2.5s cubic-bezier(0.4, 0, 0.2, 1);
}
.bg-layer.is-active { opacity: 1; }

.scrim { position: absolute; inset: 0; z-index: 10; pointer-events: none; }
.scrim--bottom { background: linear-gradient(to top, var(--bg-deep), rgba(4, 4, 6, 0.65) 50%, transparent); }
.scrim--sides  { background: linear-gradient(to right, rgba(4, 4, 6, 0.4), transparent 50%, rgba(4, 4, 6, 0.4)); }

/* 4. Cabecera ------------------------------------------------------------- */
.app-header {
    position: relative; z-index: 30;
    padding: 1rem 1rem;
    display: flex; justify-content: center; align-items: center; text-align: center;
    transition: opacity 1s;
}
.app-header.is-hidden { opacity: 0; pointer-events: none; }

.brand { display: flex; align-items: center; justify-content: center; gap: 0.5rem; }
.brand__icon { color: var(--gold); font-size: 1rem; }
.brand__title {
    font-family: var(--font-title); font-weight: 700; font-size: 0.875rem;
    letter-spacing: 0.2em; color: rgba(255, 255, 255, 0.9);
}
.brand__subtitle {
    display: block; margin-top: 0.125rem;
    font-size: 0.5rem; letter-spacing: 0.25em; text-transform: uppercase;
    color: rgba(255, 255, 255, 0.55);
}

/* Contenedor central */
.stage {
    position: relative; z-index: 20;
    flex: 1;
    width: 100%; max-width: 64rem; margin: 0 auto;
    padding: 1rem;
    display: flex; flex-direction: column; justify-content: center; align-items: center;
    overflow-y: auto; scrollbar-width: none; -ms-overflow-style: none;
}
.stage::-webkit-scrollbar { display: none; }

/* 5. Vasija --------------------------------------------------------------- */
.jar-section {
    width: 100%;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    transition: opacity 0.7s, transform 0.7s;
}
.jar-section.is-leaving { opacity: 0; transform: scale(0.95); }

.jar {
    position: relative;
    width: 9rem; height: 9rem;
    display: flex; align-items: center; justify-content: center;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.1), transparent);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5);
    transition: transform 0.5s, border-color 0.5s;
    color: rgba(255, 255, 255, 0.85);
}
.jar::before {
    content: ""; position: absolute; inset: 0; border-radius: 50%;
    background: linear-gradient(to top, rgba(212, 175, 55, 0.08), transparent);
    filter: blur(24px); opacity: 0; transition: opacity 0.75s;
}
.jar:hover, .jar:focus-visible { transform: scale(1.04); border-color: rgba(212, 175, 55, 0.4); color: #fff; }
.jar:hover::before, .jar:focus-visible::before { opacity: 1; }

.jar__art { width: 5rem; height: 5.6rem; filter: drop-shadow(0 10px 15px rgba(0, 0, 0, 0.5)); }

.jar__badge {
    position: absolute; bottom: -0.25rem;
    padding: 0.25rem 0.875rem; border-radius: 999px;
    background: var(--gold); color: #000;
    font-size: 0.5rem; font-weight: 700; letter-spacing: 0.2em;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.35);
}

.jar-hint {
    max-width: 20rem; margin-top: 1.25rem; padding: 0 1rem;
    text-align: center; text-transform: uppercase; font-weight: 300;
    font-size: 0.625rem; letter-spacing: 0.12em;
    color: rgba(255, 255, 255, 0.65);
}

.jar.is-shaking { animation: shake-jar 0.65s cubic-bezier(0.36, 0.07, 0.19, 0.97) both; }

/* 6. Papelito ------------------------------------------------------------- */
.paper-section {
    width: 100%; max-width: 32rem; margin: 0 auto;
    display: flex; flex-direction: column; align-items: center;
}

.paper {
    position: relative;
    width: 100%;
    padding: 2rem 1.25rem;
    display: flex; flex-direction: column; align-items: center;
    border-radius: 2px;
    border-left: 6px solid var(--gold);
    background: linear-gradient(180deg, var(--paper-top) 0%, var(--paper-bottom) 100%);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.6),
                inset 0 1px 0 rgba(255, 255, 255, 0.9),
                inset -4px 0 15px rgba(0, 0, 0, 0.03);
}
.paper.is-unrolling { animation: unroll 0.7s cubic-bezier(0.175, 0.885, 0.32, 1.1) forwards; }

/* Bordes de papel rasgado */
.paper::before, .paper::after {
    content: ""; position: absolute; left: 0; width: 100%; height: 6px; background-size: 12px 6px;
}
.paper::before { top: -6px;    background-image: radial-gradient(circle at 6px -3px, transparent 6px, var(--paper-top) 7px); }
.paper::after  { bottom: -6px; background-image: radial-gradient(circle at 6px 9px,  transparent 6px, var(--paper-bottom) 7px); }

.paper__icon { margin-bottom: 1rem; color: rgba(212, 175, 55, 0.7); font-size: 1.1rem; }

.paper__verse {
    max-height: 260px; overflow-y: auto; scrollbar-width: none;
    padding: 0 0.25rem;
    font-family: var(--font-title); font-weight: 600; font-size: 0.95rem;
    line-height: 1.7; letter-spacing: 0.02em; text-align: center;
    color: var(--ink);
    text-shadow: 0 1px 1px rgba(0, 0, 0, 0.05);
    user-select: text; -webkit-user-select: text;
}
.paper__verse::-webkit-scrollbar { display: none; }

.paper__rule { width: 3rem; height: 1.5px; margin: 1rem 0; background: rgba(212, 175, 55, 0.5); }

.paper__ref {
    font-family: var(--font-title); font-weight: 700; font-size: 0.7rem;
    letter-spacing: 0.2em; text-transform: uppercase; text-align: center;
    color: var(--ink-soft);
    user-select: text; -webkit-user-select: text;
}
.paper__version {
    margin-top: 0.5rem;
    font-size: 0.55rem; font-weight: 600; letter-spacing: 0.15em; text-transform: uppercase;
    color: var(--ink-faint);
}

.paper__actions { display: flex; gap: 1.25rem; margin-top: 1.5rem; }

.paper-action {
    display: flex; flex-direction: column; align-items: center; gap: 0.25rem;
    min-width: 3.5rem; padding: 0.5rem;
    color: var(--ink-soft); opacity: 0.75;
    transition: color 0.3s, opacity 0.3s;
}
.paper-action:hover, .paper-action:focus-visible { opacity: 1; color: #8a6d12; }
.paper-action--danger:hover, .paper-action--danger:focus-visible { color: var(--danger); }
.paper-action .icon { font-size: 1.15rem; }
.paper-action span { font-size: 0.55rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; }

.paper-section__more { display: flex; justify-content: center; width: 100%; margin-top: 1.5rem; }
.kbd-hint {
    margin-top: 1rem; font-size: 0.6rem; letter-spacing: 0.12em; text-transform: uppercase;
    color: rgba(255, 255, 255, 0.5);
}
.kbd-hint kbd { font: inherit; font-weight: 600; color: rgba(255, 255, 255, 0.8); }

/* 7. Botones -------------------------------------------------------------- */
.btn {
    display: flex; align-items: center; justify-content: center; gap: 0.5rem;
    width: 100%; padding: 0.75rem 1rem; border-radius: 0.75rem;
    font-size: 0.625rem; font-weight: 700; letter-spacing: 0.15em; text-transform: uppercase;
    transition: transform 0.3s, background 0.3s, color 0.3s, border-color 0.3s;
}
.btn:active { transform: scale(0.96); }
.btn .keep-case { text-transform: none; letter-spacing: 0.05em; }
.btn .icon { font-size: 0.8rem; }

.btn--light { background: rgba(255, 255, 255, 0.95); color: #000; box-shadow: 0 20px 25px rgba(0, 0, 0, 0.3); }
.btn--light:hover { background: #fff; transform: scale(1.02); }

.btn--gold { background: var(--gold); color: #000; box-shadow: 0 10px 15px rgba(0, 0, 0, 0.3); }
.btn--gold:hover { background: var(--gold-light); }

.btn--glass {
    color: rgba(255, 255, 255, 0.85);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
}
.btn--glass:hover { background: rgba(255, 255, 255, 0.1); border-color: rgba(255, 255, 255, 0.2); color: var(--gold); }
.btn--glass .icon { color: var(--gold); }

/* 8. Modal de compartir --------------------------------------------------- */
.modal {
    position: fixed; inset: 0; z-index: 50;
    display: flex; align-items: center; justify-content: center;
    padding: 1rem; overflow-y: auto;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
}

.modal__panel {
    position: relative; width: 100%; max-width: 24rem; margin: auto;
    padding: 1.25rem;
    display: flex; flex-direction: column; align-items: center;
    border-radius: 1rem; border: 1px solid rgba(255, 255, 255, 0.12);
    background: rgba(8, 8, 12, 0.7);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
}

.modal__close {
    position: absolute; top: 0.75rem; right: 0.75rem;
    min-width: 2.25rem; min-height: 2.25rem;
    display: flex; align-items: center; justify-content: center;
    color: rgba(255, 255, 255, 0.7);
}
.modal__close:hover { color: #fff; }
.modal__close .icon { font-size: 1.1rem; }

.modal__title {
    margin: 0.5rem 0 0.75rem;
    font-family: var(--font-title); font-weight: 600; font-size: 0.7rem;
    letter-spacing: 0.2em; text-align: center; color: var(--gold);
}

.card-preview {
    position: relative; width: 100%; max-width: 12rem; aspect-ratio: 9 / 16;
    margin-bottom: 1rem; overflow: hidden;
    border-radius: 0.75rem; border: 1px solid rgba(255, 255, 255, 0.1);
    background: #09090b; box-shadow: 0 25px 50px rgba(0, 0, 0, 0.6);
}
.card-preview img { display: block; width: 100%; height: 100%; object-fit: cover; }

.card-preview__hint {
    position: absolute; inset: 0; padding: 0.75rem;
    display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 0.5rem;
    text-align: center; pointer-events: none;
    background: rgba(0, 0, 0, 0.6); opacity: 0; transition: opacity 0.3s;
    font-size: 0.5rem; font-weight: 700; letter-spacing: 0.15em; text-transform: uppercase;
    line-height: 1.6; color: rgba(255, 255, 255, 0.9);
}
.card-preview:hover .card-preview__hint { opacity: 1; }

.modal__stack { display: flex; flex-direction: column; gap: 0.625rem; width: 100%; }

.modal__tag {
    margin-top: 0.875rem; text-align: center;
    font-size: 0.6rem; line-height: 1.6; letter-spacing: 0.04em;
    color: rgba(255, 255, 255, 0.6);
}
.modal__tag strong { color: var(--gold); font-weight: 700; }

/* 9. Toast ---------------------------------------------------------------- */
.toast {
    position: fixed; z-index: 60; left: 50%; bottom: 2.5rem;
    max-width: 90%; padding: 0.625rem 1.25rem;
    display: flex; align-items: center; gap: 0.5rem;
    border-radius: 999px; border: 1px solid rgba(255, 255, 255, 0.15);
    background: rgba(8, 8, 12, 0.8);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    font-size: 0.7rem; text-align: center; color: #fff;
    opacity: 0; transform: translate(-50%, 0.75rem); pointer-events: none;
    transition: opacity 0.3s, transform 0.3s;
}
.toast.is-visible { opacity: 1; transform: translate(-50%, 0); }
.toast .icon { color: var(--gold); }

/* 10. Pie ----------------------------------------------------------------- */
.site-footer {
    position: relative; z-index: 20;
    padding: 0.5rem 1rem 1rem; text-align: center;
}
.site-footer a {
    display: inline-flex; align-items: center; gap: 0.4rem;
    font-size: 0.65rem; letter-spacing: 0.15em; text-decoration: none;
    color: rgba(255, 255, 255, 0.6); transition: color 0.3s;
}
.site-footer a:hover, .site-footer a:focus-visible { color: var(--gold); }
.site-footer .icon { font-size: 0.9rem; }

/* 11. Pantallas más grandes ----------------------------------------------- */
@media (min-width: 640px) {
    .jar { width: 12rem; height: 12rem; }
    .jar__art { transform: scale(1.1); }
    .jar__badge { font-size: 0.55rem; letter-spacing: 0.25em; }
    .jar-hint { font-size: 0.75rem; letter-spacing: 0.15em; }
    .paper { padding: 3rem 2.5rem; }
    .paper__verse { font-size: 1.125rem; }
    .paper__ref { font-size: 0.7rem; }
    .paper__actions { margin-top: 2rem; }
    .btn { width: auto; padding: 0.75rem 1.5rem; font-size: 0.75rem; }
    .paper-section__more .btn { font-size: 0.75rem; }
    .card-preview { max-width: 13rem; }
}

@media (min-width: 768px) {
    .app-header { padding: 1.5rem 3rem; }
    .brand__icon { font-size: 1.125rem; }
    .brand__title { font-size: 1.25rem; letter-spacing: 0.25em; }
    .brand__subtitle { font-size: 0.5625rem; letter-spacing: 0.35em; }
    .stage { padding: 1rem 2rem; }
    .jar { width: 13rem; height: 13rem; }
    .jar-hint { margin-top: 1.5rem; }
    .paper { padding: 3.5rem 3rem; }
    .paper__verse { font-size: 1.25rem; }
    .paper-section__more { margin-top: 2rem; }
}

@media (min-width: 1024px) {
    .paper__verse { font-size: 1.5rem; }
}

/* Los atajos de teclado no aplican en pantallas táctiles */
@media (hover: none) {
    .kbd-hint { display: none; }
}

/* 12. Movimiento ---------------------------------------------------------- */
@keyframes shake-jar {
    0%, 100% { transform: rotate(0deg) scale(1); }
    15% { transform: rotate(-6deg) scale(1.05); }
    30% { transform: rotate(5deg) scale(1.05); }
    45% { transform: rotate(-4deg) scale(1.03); }
    60% { transform: rotate(3deg) scale(1.02); }
    75% { transform: rotate(-1deg) scale(1.01); }
}

@keyframes unroll {
    0%   { opacity: 0; transform: scaleY(0.1) scaleX(0.8) translateY(50px); filter: blur(5px); }
    100% { opacity: 1; transform: scaleY(1) scaleX(1) translateY(0); filter: blur(0); }
}

@keyframes pulse-slow {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.55; }
}
.brand__icon .icon { animation: pulse-slow 4s cubic-bezier(0.4, 0, 0.6, 1) infinite; }

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