/* ================= CONFIGURACIÓN Y VARIABLES ================= */
:root {
    /* Colores */
    --color-bg: #f5f7f5;
    --color-card-bg: #ffffff;
    --color-primary: #3d5a45;      /* Verde Bosque/Salvia Oscuro */
    --color-primary-light: #5a7a62;
    --color-secondary: #e76f51;    /* Terracota/Coral */
    --color-secondary-light: #f4a261;
    --color-accent: #d4af37;       /* Oro */
    --color-text-dark: #2f3e33;
    --color-text-muted: #6b7c70;
    --color-path: #fcfbf7;         /* Arena Claro */
    --color-wall: #cad2c5;         /* Verde Salvia Claro */
    
    /* Fuentes */
    --font-serif: 'Playfair Display', Georgia, serif;
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    
    /* Sombras y Radios */
    --shadow-soft: 0 8px 30px rgba(0, 0, 0, 0.05);
    --shadow-medium: 0 12px 40px rgba(61, 90, 69, 0.12);
    --shadow-inset: inset 0 2px 4px rgba(0,0,0,0.06);
    --radius-lg: 24px;
    --radius-md: 16px;
    --radius-sm: 8px;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset General */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

/* html y body: bloques simples, scroll nativo garantizado */
html {
    overflow-x: hidden;
    overflow-y: scroll; /* Fuerza scroll nativo en el elemento raíz — funciona en TODOS los navegadores y dispositivos */
}

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg);
    color: var(--color-text-dark);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

/* Canvas de Confeti en todo el fondo */
#confetti-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    pointer-events: none;
}

/* ================= PANTALLA DE BIENVENIDA (TAP PARA ENTRAR) ================= */
.welcome-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 30%, #f7faf6 0%, #edf4ee 60%, #e0ece2 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10000;
    transition: opacity 0.8s cubic-bezier(0.25, 1, 0.5, 1), visibility 0.8s;
    padding: 24px;
    text-align: center;
}

.welcome-overlay.fade-out {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.welcome-content {
    animation: welcome-float 4s ease-in-out infinite alternate;
    max-width: 400px;
}

.welcome-badge {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--color-primary-light);
    display: block;
    margin-bottom: 16px;
}

.welcome-title {
    font-family: var(--font-serif);
    font-size: 38px;
    color: var(--color-primary);
    line-height: 1.2;
    margin-bottom: 8px;
    font-weight: 700;
}

.welcome-sub {
    font-size: 16px;
    color: var(--color-text-muted);
    margin-bottom: 36px;
    letter-spacing: 1px;
}

.welcome-btn {
    background: var(--color-primary);
    color: white;
    border: none;
    padding: 16px 36px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 30px;
    cursor: pointer;
    box-shadow: var(--shadow-medium);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.welcome-btn:hover {
    transform: translateY(-3px) scale(1.05);
    background: var(--color-primary-light);
    box-shadow: 0 15px 35px rgba(61,90,69,0.25);
}

.welcome-btn:active {
    transform: translateY(-1px) scale(0.98);
}

@keyframes welcome-float {
    0% { transform: translateY(0); }
    100% { transform: translateY(-10px); }
}

/* ================= BOTÓN FLOTANTE DE MÚSICA ================= */
#music-toggle {
    position: fixed;
    bottom: 24px;
    right: 20px;
    z-index: 9998;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: none;
    cursor: pointer;
    background: rgba(61, 90, 69, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 4px 20px rgba(0,0,0,0.25), 0 0 0 1px rgba(255,255,255,0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.3s ease;
    animation: music-pulse 3s ease-in-out infinite;
}

#music-toggle:hover {
    transform: scale(1.12);
    box-shadow: 0 8px 28px rgba(0,0,0,0.35), 0 0 0 2px rgba(212,175,55,0.5);
    background: rgba(61, 90, 69, 0.95);
}

#music-toggle.muted {
    background: rgba(80, 80, 80, 0.75);
    animation: none;
}

#music-toggle.muted #music-icon {
    opacity: 0.6;
    filter: grayscale(1);
}

@keyframes music-pulse {
    0%, 100% { box-shadow: 0 4px 20px rgba(0,0,0,0.25), 0 0 0 0 rgba(212,175,55,0); }
    50%       { box-shadow: 0 4px 20px rgba(0,0,0,0.25), 0 0 0 6px rgba(212,175,55,0.2); }
}

/* Contenedor de la Aplicación (Centrado, juego) */
#app-container {
    width: 100%;
    max-width: 480px;
    margin: 0 auto;
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    position: relative;
    padding: 16px;
}

/* Cuando la invitación está activa: contenedor se convierte en bloque normal */
#app-container.invitation-active {
    display: block !important;
    padding: 0 !important;
    max-width: 100% !important;
    width: 100% !important;
    min-height: unset !important;
    height: auto !important;
    overflow: visible !important;
    flex-direction: unset !important;
}

@media (min-width: 768px) {
    #app-container.invitation-active {
        max-width: 1100px !important;
        margin: 40px auto !important;
        border-radius: 40px;
        box-shadow: 0 30px 70px rgba(0,0,0,0.08);
        background: white;
    }
}

/* Clases de Visibilidad de Pantallas */
.active-screen {
    display: block;
    animation: fadeIn 0.6s var(--transition);
}

.hidden-screen {
    display: none !important;
}

/* Animaciones */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
    0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(231, 111, 81, 0.7); }
    70% { transform: scale(1.1); box-shadow: 0 0 0 10px rgba(231, 111, 81, 0); }
    100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(231, 111, 81, 0); }
}

@keyframes pulse-heart {
    0% { transform: scale(1); }
    14% { transform: scale(1.15); }
    28% { transform: scale(1); }
    42% { transform: scale(1.15); }
    70% { transform: scale(1); }
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-5px); }
    100% { transform: translateY(0px); }
}

/* ================= COMPONENTES GENERALES ================= */
.badge {
    background-color: rgba(61, 90, 69, 0.1);
    color: var(--color-primary);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.5px;
    display: inline-block;
    margin-bottom: 12px;
}

.primary-btn {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: white;
    border: none;
    padding: 16px 28px;
    border-radius: var(--radius-md);
    font-family: var(--font-sans);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 8px 20px rgba(61, 90, 69, 0.2);
    transition: var(--transition);
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
}

.primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 25px rgba(61, 90, 69, 0.3);
}

.primary-btn:active {
    transform: translateY(0);
}

.secondary-btn {
    background-color: transparent;
    color: var(--color-text-muted);
    border: 1px solid rgba(0, 0, 0, 0.1);
    padding: 12px 20px;
    border-radius: var(--radius-md);
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    width: 100%;
}

.secondary-btn:hover {
    border-color: var(--color-text-muted);
    color: var(--color-text-dark);
    background-color: rgba(0,0,0,0.02);
}

.divider {
    border: none;
    height: 1px;
    background: linear-gradient(to right, rgba(0,0,0,0), rgba(61, 90, 69, 0.15), rgba(0,0,0,0));
    margin: 32px 0;
}

/* ================= PANTALLA 1: ESTILOS DEL JUEGO ================= */
#game-screen {
    background-color: var(--color-card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-medium);
    padding: 16px 16px 12px;
    /* En móvil: ocupa exactamente la pantalla disponible */
    height: 100vh;
    height: 100dvh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.game-header {
    text-align: center;
    margin-bottom: 10px;
    flex-shrink: 0;
}

.game-header h1 {
    font-family: var(--font-serif);
    color: var(--color-primary);
    font-size: 22px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 4px;
}

.game-header .instructions {
    font-size: 13px;
    color: var(--color-text-muted);
    line-height: 1.4;
}

/* Indicador inicial sobre el jugador */
.player-arrow-hint {
    position: absolute;
    top: -46px; /* Encima de la celda */
    left: 50%;
    transform: translateX(-50%);
    z-index: 100;
    display: flex;
    flex-direction: column;
    align-items: center;
    pointer-events: none;
    animation: bounceHint 1s ease-in-out infinite alternate;
    transition: opacity 0.3s ease-out, transform 0.3s ease-out;
}

.player-arrow-hint.hidden {
    opacity: 0;
    transform: translate(-50%, -8px);
}

.player-arrow-hint span {
    background: var(--color-primary);
    color: white;
    font-size: 11px;
    font-weight: 700;
    padding: 4px 8px;
    border-radius: 6px;
    white-space: nowrap;
    box-shadow: 0 4px 10px rgba(0,0,0,0.18);
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.player-arrow-hint::after {
    content: '▼';
    color: var(--color-primary);
    font-size: 10px;
    margin-top: -2px;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

@keyframes bounceHint {
    0% { transform: translate(-50%, 0); }
    100% { transform: translate(-50%, -5px); }
}

/* El Laberinto — crece para llenar espacio disponible */
.maze-wrapper {
    background-color: #e9ecef;
    border-radius: var(--radius-md);
    padding: 10px;
    box-shadow: var(--shadow-inset);
    margin-bottom: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
    flex: 1;
    min-height: 0;
}

#maze-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    grid-template-rows: repeat(7, 1fr);
    gap: 4px;
    width: 100%;
    max-width: 340px;
    aspect-ratio: 1 / 1;
    /* Limitar tamaño para que quepan los controles */
    max-height: min(340px, 48vh);
}

/* Celdas del Laberinto */
.cell {
    aspect-ratio: 1 / 1;
    border-radius: 6px;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: var(--transition);
}

/* Paredes */
.cell-wall {
    background: linear-gradient(135deg, #a3b19b, #8a9a86);
    box-shadow: inset 0 -3px 0 rgba(0, 0, 0, 0.15), 0 2px 4px rgba(0,0,0,0.1);
}

/* Caminos */
.cell-path {
    background-color: var(--color-path);
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.03);
}

/* Jugador (Riñón Donante) */
.kidney-player {
    width: 85%;
    height: 85%;
    z-index: 5;
    filter: drop-shadow(0 4px 6px rgba(0,0,0,0.15));
    transition: all 0.2s cubic-bezier(0.18, 0.89, 0.32, 1.28);
    animation: float 2s ease-in-out infinite;
}

/* Meta (Riñón Receptor) */
.kidney-goal {
    width: 85%;
    height: 85%;
    z-index: 4;
    filter: drop-shadow(0 4px 6px rgba(0,0,0,0.15));
    animation: pulse-heart 2s infinite ease-in-out;
}

/* Checkpoints (Corazones en el camino) */
.checkpoint-heart {
    width: 60%;
    height: 60%;
    animation: pulse 1.5s infinite;
    cursor: pointer;
    z-index: 3;
}

/* Controles de Dirección (D-Pad) — siempre visibles en móvil */
.controls-container {
    text-align: center;
    flex-shrink: 0;
    padding-bottom: 4px;
}

.control-tip {
    font-size: 11px;
    color: var(--color-text-muted);
    margin-bottom: 4px;
}

.d-pad {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.d-pad-row {
    display: flex;
    align-items: center;
    gap: 16px;
}

.d-btn {
    background-color: var(--color-card-bg);
    border: 1px solid rgba(0,0,0,0.08);
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
    color: var(--color-primary);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: var(--transition);
    touch-action: manipulation;
}

.d-btn:active {
    transform: scale(0.88);
    background-color: var(--color-path);
}

.d-pad-center {
    width: 38px;
    height: 38px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.skip-container {
    margin-top: 8px;
    text-align: center;
    flex-shrink: 0;
}

/* ================= MODAL DEL ROMPECABEZAS ================= */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(47, 62, 51, 0.6); /* Sage oscuro semitransparente */
    backdrop-filter: blur(8px);
    display: flex;
    justify-content: center;
    align-items: flex-start; /* Permite scroll desde el inicio */
    overflow-y: auto;        /* Scroll vertical en el overlay si el contenido desborda */
    padding: 24px 8px;       /* Margen de seguridad superior/inferior al scrollear */
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s ease;
}

.modal-overlay.open {
    opacity: 1;
    pointer-events: auto;
}

.modal-content {
    background-color: var(--color-card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-medium);
    width: 92%;
    max-width: 400px;
    padding: 24px;
    text-align: center;
    margin: auto;            /* Centrado automático si el alto cabe, si no, respeta el padding superior */
    transform: scale(0.9);
    transition: transform 0.4s cubic-bezier(0.18, 0.89, 0.32, 1.28),
                max-width 0.5s ease,
                width 0.5s ease,
                padding 0.5s ease;
}

.modal-overlay.open .modal-content {
    transform: scale(1);
}

/* Estado expandido cuando la foto está revelada - Maximizado de foto */
.modal-overlay.photo-revealed .modal-content {
    width: 98%;
    max-width: 880px;
    padding: 12px 12px 18px;
}

.puzzle-header h3 {
    font-family: var(--font-serif);
    color: var(--color-primary);
    font-size: 20px;
    margin-bottom: 8px;
}

.puzzle-header p {
    font-size: 13px;
    color: var(--color-text-muted);
    margin-bottom: 20px;
}

.puzzle-board-container {
    background-color: #f0f2f0;
    border-radius: var(--radius-md);
    padding: 10px;
    margin-bottom: 20px;
    display: inline-block;
    box-shadow: var(--shadow-inset);
}

#puzzle-board {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(2, 1fr);
    gap: 0;
    width: 240px;
    height: 240px;
}

/* Piezas de Rompecabezas */
.puzzle-piece {
    width: 120px;
    height: 120px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    background-repeat: no-repeat;
    transition: var(--transition);
    border: none;
    box-shadow: inset 0 0 0 2px white, 0 2px 5px rgba(0,0,0,0.1);
}

.puzzle-piece.selected {
    transform: scale(0.95);
    box-shadow: inset 0 0 0 3px var(--color-secondary), 0 0 15px var(--color-secondary-light);
    z-index: 10;
}

.modal-actions {
    margin-top: 10px;
}

/* Body con scroll bloqueado cuando el modal está abierto */
body.modal-open {
    overflow: hidden;
}

/* ================= PANTALLA 2: LA INVITACIÓN (REDISEÑO FLUIDO, BIÓFILO Y LÍQUIDO) ================= */
#invitation-screen {
    animation: fadeIn 1.2s cubic-bezier(0.25, 1, 0.5, 1);
    padding: 0;
    position: relative;
    background: radial-gradient(circle at 50% 0%, #f7faf6 0%, #edf4ee 60%, #e0ece2 100%);
    overflow: visible;
}

.inv-wrap {
    width: 100%;
    max-width: 100%;
    position: relative;
    z-index: 2;
}

/* Blobs de fondo fluidos y orgánicos en movimiento */
.inv-bg-blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(90px);
    opacity: 0.55;
    z-index: 1;
    pointer-events: none;
    mix-blend-mode: multiply;
}

.inv-blob-1 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(212, 175, 55, 0.35) 0%, rgba(212, 175, 55, 0) 70%);
    top: 10%;
    left: -200px;
    animation: float-blob-1 25s infinite alternate ease-in-out;
}

.inv-blob-2 {
    width: 550px;
    height: 550px;
    background: radial-gradient(circle, rgba(61, 90, 69, 0.3) 0%, rgba(61, 90, 69, 0) 70%);
    bottom: 30%;
    right: -250px;
    animation: float-blob-2 28s infinite alternate ease-in-out;
}

.inv-blob-3 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255, 182, 193, 0.25) 0%, rgba(255, 182, 193, 0) 70%);
    bottom: 5%;
    left: 15%;
    animation: float-blob-3 22s infinite alternate ease-in-out;
}

@keyframes float-blob-1 {
    0% { transform: translate(0, 0) scale(1) rotate(0deg); }
    100% { transform: translate(150px, 90px) scale(1.2) rotate(180deg); }
}
@keyframes float-blob-2 {
    0% { transform: translate(0, 0) scale(1.1) rotate(0deg); }
    100% { transform: translate(-120px, -150px) scale(0.85) rotate(-180deg); }
}
@keyframes float-blob-3 {
    0% { transform: translate(0, 0) scale(0.9) rotate(0deg); }
    100% { transform: translate(90px, -70px) scale(1.25) rotate(90deg); }
}

/* ① HERO BIÓFILO (Con corte de arco fluido) */
.inv-hero {
    position: relative;
    width: 100%;
    height: 82vh;
    min-height: 480px;
    max-height: 700px;
    overflow: hidden;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    clip-path: ellipse(110% 100% at 50% 0%); /* Curva orgánica inferior */
    box-shadow: 0 20px 40px rgba(61, 90, 69, 0.12);
    z-index: 3;
}

.inv-hero-img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center center; /* Centrado para ver a ambos hermanos */
    filter: brightness(0.7) contrast(1.05) saturate(1.05);
    transition: transform 2s cubic-bezier(0.25, 1, 0.5, 1);
}

.inv-hero:hover .inv-hero-img {
    transform: scale(1.06);
}

.inv-hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to bottom,
        rgba(15, 28, 20, 0.2) 0%,
        rgba(15, 28, 20, 0) 35%,
        rgba(15, 28, 20, 0.4) 65%,
        rgba(15, 28, 20, 0.95) 100%
    );
}

.inv-hero-leaves {
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    pointer-events: none;
    z-index: 4;
}

.inv-hero-leaves svg {
    width: 100%;
    height: auto;
    display: block;
    fill: #ffffff; /* Fusión perfecta con sección historia */
}

.inv-hero-content {
    position: relative;
    z-index: 5;
    text-align: center;
    padding: 0 24px 64px;
    width: 100%;
}

.inv-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.35);
    color: #ffffff;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
    padding: 8px 24px;
    border-radius: 50px;
    margin-bottom: 16px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.inv-hero-years {
    font-family: var(--font-serif);
    font-size: clamp(100px, 25vw, 170px);
    font-weight: 700;
    line-height: 0.75;
    color: transparent;
    -webkit-text-stroke: 1px rgba(255,255,255,0.6);
    background: linear-gradient(135deg, #ffffff 30%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 6px;
    filter: drop-shadow(0 8px 15px rgba(0,0,0,0.2));
}

.inv-hero-title {
    font-family: var(--font-serif);
    font-size: clamp(26px, 7vw, 48px);
    font-weight: 700;
    color: white;
    margin-bottom: 8px;
    letter-spacing: -0.5px;
    text-shadow: 0 2px 12px rgba(0,0,0,0.4);
}

.inv-hero-sub {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.85);
    font-style: italic;
    font-family: var(--font-serif);
    letter-spacing: 0.5px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.4);
}

.inv-hero-scroll {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    animation: float 2.5s ease-in-out infinite;
    z-index: 5;
    opacity: 0.8;
}

/* ② HISTORIA EDITORIAL (Con curva líquida) */
.inv-story-section {
    background: white;
    padding: 70px 32px 60px;
    text-align: center;
    position: relative;
    z-index: 4;
    border-radius: 0 0 100px 100px;
    box-shadow: 0 15px 40px rgba(61,90,69,0.03);
}

.inv-quote-mark {
    font-family: var(--font-serif);
    font-size: 110px;
    line-height: 0.3;
    color: var(--color-accent);
    opacity: 0.4;
    margin-bottom: 12px;
    display: block;
    user-select: none;
}

/* Riñones abrazados — flex en todas las resoluciones */
.inv-kidneys-hug {
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: flex-end;
    gap: 0;
    margin: 28px 0;
    line-height: 0;
}

.kidney-anim-left {
    display: inline-block;
    vertical-align: bottom;
    flex-shrink: 0;
    animation: float 2.2s ease-in-out infinite;
    will-change: transform;
}

.kidney-anim-right {
    display: inline-block;
    vertical-align: bottom;
    flex-shrink: 0;
    animation: pulse-heart 2.2s infinite ease-in-out;
    will-change: transform;
}

.inv-story-lead {
    font-family: var(--font-serif);
    font-size: clamp(19px, 4.5vw, 25px);
    font-weight: 600;
    color: var(--color-primary);
    line-height: 1.55;
    margin-bottom: 24px;
    max-width: 680px;
    margin-left: auto;
    margin-right: auto;
    font-style: italic;
}

.inv-story-body {
    font-size: 16.5px;
    color: var(--color-text-muted);
    line-height: 1.85;
    max-width: 560px;
    margin: 0 auto 30px;
}

.inv-story-divider {
    color: var(--color-accent);
    font-size: 16px;
    letter-spacing: 10px;
    margin: 20px 0;
    opacity: 0.85;
}

.inv-story-cta {
    font-family: var(--font-serif);
    font-size: 19px;
    color: var(--color-secondary);
    font-weight: 700;
    letter-spacing: 0.5px;
}

/* ③ FOTO EN MARCO DE HOJA + DETALLES LÍQUIDOS */
.inv-details-wrap {
    padding: 70px 24px;
    display: flex;
    flex-direction: column;
    gap: 48px;
    align-items: center;
    position: relative;
    z-index: 4;
}

/* Variante sin foto: centrada con ancho máximo mayor */
.inv-details-wrap--centered {
    gap: 0;
}

.inv-details-wrap--centered .inv-details {
    max-width: 560px;
    width: 100%;
}

/* Nota de sorpresa */
.inv-surprise-note {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    background: linear-gradient(135deg, rgba(61,90,69,0.08), rgba(212,175,55,0.08));
    border: 1.5px solid rgba(61,90,69,0.18);
    border-radius: 20px;
    padding: 20px 22px;
    margin: 28px 0 8px;
    backdrop-filter: blur(8px);
}

.inv-surprise-icon {
    font-size: 28px;
    flex-shrink: 0;
    line-height: 1;
}

.inv-surprise-note p {
    font-size: 15px;
    color: var(--color-primary);
    line-height: 1.55;
    margin: 0;
}

.inv-surprise-note strong {
    font-weight: 700;
    font-size: 16px;
    color: var(--color-secondary);
}


/* Foto Asimétrica en Forma de Hoja Botánica con Sombras */
.inv-polaroid {
    background: white;
    padding: 12px;
    border-radius: 80% 20% 80% 20% / 80% 20% 80% 20%; /* Silueta de hoja elegante */
    box-shadow: 0 25px 50px rgba(61, 90, 69, 0.15), 0 8px 25px rgba(212, 175, 55, 0.12);
    transition: all 0.8s cubic-bezier(0.19, 1, 0.22, 1);
    width: 100%;
    max-width: 330px;
    aspect-ratio: 1;
    overflow: hidden;
    position: relative;
    border: 5px solid white;
    animation: float 5s ease-in-out infinite;
}

/* Borde dorado flotante interno */
.inv-polaroid::before {
    content: '';
    position: absolute;
    inset: 4px;
    border-radius: inherit;
    border: 2px solid var(--color-accent);
    pointer-events: none;
    z-index: 2;
    opacity: 0.9;
}

.inv-polaroid:hover {
    transform: rotate(-1.5deg) scale(1.05);
    border-radius: 50% 50% 50% 50% / 50% 50% 50% 50%; /* Se suaviza a círculo */
    box-shadow: 0 30px 60px rgba(61, 90, 69, 0.22);
}

.inv-polaroid-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.inv-polaroid-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: linear-gradient(to top, rgba(15,28,20,0.85), transparent);
    color: white;
    font-family: var(--font-serif);
    font-size: 13px;
    font-style: italic;
    text-align: center;
    padding: 30px 15px 12px;
    z-index: 3;
    pointer-events: none;
    letter-spacing: 0.5px;
}

/* Pills de Detalles: Cristal Líquido Asimétrico */
.inv-details {
    width: 100%;
    max-width: 450px;
}

.inv-details-title {
    font-family: var(--font-serif);
    color: var(--color-primary);
    font-size: 25px;
    font-weight: 700;
    margin-bottom: 28px;
    position: relative;
    display: inline-block;
}

.inv-details-title::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 70%;
    height: 3px;
    background: linear-gradient(to right, var(--color-accent), transparent);
    border-radius: 2px;
}

.inv-pill {
    display: flex;
    align-items: center;
    gap: 20px;
    background: rgba(255, 255, 255, 0.45);
    backdrop-filter: blur(20px) saturate(125%);
    -webkit-backdrop-filter: blur(20px) saturate(125%);
    border-radius: 40px 15px 40px 15px; /* Curvas orgánicas asimétricas */
    padding: 18px 24px;
    margin-bottom: 18px;
    border: 1px solid rgba(255, 255, 255, 0.6);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.02);
    transition: all 0.5s cubic-bezier(0.25, 1, 0.5, 1);
}

.inv-pill:hover {
    transform: translateY(-5px) scale(1.02);
    background: rgba(255, 255, 255, 0.7);
    border-color: rgba(212, 175, 55, 0.5);
    box-shadow: 0 15px 30px rgba(61, 90, 69, 0.08);
}

.inv-pill-icon {
    font-size: 26px;
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background: white;
    border-radius: 50% 35% 50% 35%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 12px rgba(0,0,0,0.03);
}

.inv-pill-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.inv-pill-label {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-primary);
    opacity: 0.9;
}

.inv-pill-value {
    font-size: 16.5px;
    font-weight: 600;
    color: var(--color-text-dark);
    letter-spacing: -0.2px;
}

.inv-pill-sub {
    font-size: 13px;
    color: var(--color-text-muted);
}

/* Botones de acción ultra-redondeados */
.inv-action-row {
    display: flex;
    gap: 16px;
    margin-top: 28px;
}

.inv-action-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.25, 1, 0.5, 1);
    flex: 1;
    justify-content: center;
    box-shadow: 0 6px 16px rgba(0,0,0,0.04);
}

.inv-action-map {
    background: var(--color-primary);
    color: white;
    border: 1px solid var(--color-primary);
}
.inv-action-map:hover {
    background: var(--color-primary-light);
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(61, 90, 69, 0.28);
}

.inv-action-cal {
    background: white;
    color: var(--color-primary);
    border: 1px solid rgba(61, 90, 69, 0.3);
}
.inv-action-cal:hover {
    background: var(--color-bg);
    transform: translateY(-2px);
    border-color: var(--color-primary);
    box-shadow: 0 10px 24px rgba(0,0,0,0.06);
}

/* ④ COUNTDOWN FLUIDO Y CIRCULAR DE CRISTAL */
.inv-countdown-section {
    background: linear-gradient(135deg, #182e1e 0%, #0a160d 100%);
    padding: 70px 24px;
    text-align: center;
    position: relative;
    border-radius: 80px 80px 0 0;
    z-index: 4;
    box-shadow: 0 -15px 35px rgba(0,0,0,0.06);
}

.inv-countdown-label {
    font-size: 11.5px;
    text-transform: uppercase;
    letter-spacing: 4px;
    color: rgba(255, 255, 255, 0.55);
    margin-bottom: 36px;
    font-weight: 700;
}

.inv-countdown-timer {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
}

.inv-countdown-unit {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    width: 80px;
    height: 80px;
    border-radius: 50% 30% 50% 30%; /* Círculo fluido */
    justify-content: center;
    box-shadow: 0 8px 20px rgba(0,0,0,0.2);
    transition: all 0.4s cubic-bezier(0.25, 1, 0.5, 1);
}

.inv-countdown-unit:hover {
    transform: scale(1.08) rotate(3deg);
    border-color: var(--color-accent);
    background: rgba(212, 175, 55, 0.08);
    box-shadow: 0 12px 25px rgba(212, 175, 55, 0.15);
}

.inv-countdown-num {
    font-family: var(--font-serif);
    font-size: 28px;
    font-weight: 700;
    line-height: 1;
    background: linear-gradient(135deg, #ffffff, var(--color-accent));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.inv-countdown-sep {
    font-family: var(--font-serif);
    font-size: 26px;
    font-weight: 700;
    color: rgba(212, 175, 55, 0.45);
    animation: flash 2s infinite;
}

@keyframes flash {
    0%, 100% { opacity: 0.35; }
    50% { opacity: 1; }
}

.inv-countdown-tag {
    font-size: 9px;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: rgba(255, 255, 255, 0.45);
    margin-top: 5px;
}

/* ⑤ RSVP CRISTAL LÍQUIDO OSCURO */
.inv-rsvp-section {
    background: #0a160d;
    padding: 70px 24px;
    position: relative;
    z-index: 4;
}

.inv-rsvp-inner {
    max-width: 480px;
    margin: 0 auto;
    text-align: center;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.07);
    padding: 48px 36px;
    border-radius: 50px 20px 50px 20px; /* Bordes asimétricos curvos */
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.35);
}

.inv-rsvp-icon {
    font-size: 44px;
    margin-bottom: 24px;
    display: block;
    animation: float 4s ease-in-out infinite;
}

.inv-rsvp-title {
    font-family: var(--font-serif);
    font-size: 30px;
    font-weight: 700;
    color: white;
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}

.inv-rsvp-sub {
    font-size: 14.5px;
    color: rgba(255, 255, 255, 0.65);
    line-height: 1.65;
    margin-bottom: 36px;
}
.inv-rsvp-sub strong { color: var(--color-accent); }

.inv-rsvp-form {
    text-align: left;
}

.inv-form-group {
    margin-bottom: 24px;
}

.inv-form-group label {
    display: block;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.55);
    margin-bottom: 10px;
}

/* Inputs minimalistas de línea inferior */
.inv-form-group input,
.inv-form-group select {
    width: 100%;
    padding: 12px 4px;
    background: transparent;
    border: none;
    border-bottom: 1.5px solid rgba(255, 255, 255, 0.2);
    border-radius: 0;
    font-family: var(--font-sans);
    font-size: 16px;
    color: white;
    transition: all 0.4s ease;
}

.inv-form-group input::placeholder { color: rgba(255, 255, 255, 0.35); }

.inv-form-group input:focus,
.inv-form-group select:focus {
    outline: none;
    border-bottom-color: var(--color-accent);
    padding-left: 8px; /* Micro desplazamiento dinámico */
}

.inv-form-group select option {
    background: #0f1e14;
    color: white;
}

.inv-rsvp-btn {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, #25d366, #128c7e);
    color: white;
    border: none;
    border-radius: 50px;
    font-family: var(--font-sans);
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-top: 16px;
    transition: all 0.3s cubic-bezier(0.25, 1, 0.5, 1);
    box-shadow: 0 10px 25px rgba(37, 211, 102, 0.35);
    letter-spacing: 0.5px;
}

.inv-rsvp-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 16px 35px rgba(37, 211, 102, 0.5);
}

/* ⑥ FOOTER */
.inv-footer {
    background: #060e08;
    padding: 48px 24px;
    text-align: center;
    color: rgba(255, 255, 255, 0.35);
    font-size: 13.5px;
    line-height: 1.8;
    position: relative;
    z-index: 4;
}

.inv-footer-hearts {
    font-size: 22px;
    margin-bottom: 12px;
    letter-spacing: 6px;
    display: inline-block;
    animation: float 3s ease-in-out infinite alternate;
}

/* Riñones SVG del footer — mismo tamaño que los corazones anteriores */
.inv-footer-kidneys {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    animation: float 3s ease-in-out infinite alternate;
}

.footer-kidney-svg {
    width: 22px;
    height: 22px;
    display: inline-block;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.06));
}

.inv-footer-year {
    font-family: var(--font-serif);
    font-size: 11px;
    letter-spacing: 6px;
    text-transform: uppercase;
    margin-top: 8px;
    opacity: 0.65;
}

/* Desktop layout premium para inv-details-wrap */
@media (min-width: 768px) {
    .inv-details-wrap {
        flex-direction: row;
        align-items: center;
        justify-content: center;
        padding: 90px 48px;
        gap: 72px;
        max-width: 1050px;
        margin: 0 auto;
    }
    .inv-polaroid {
        max-width: 380px;
        border-radius: 80% 20% 80% 20% / 80% 20% 80% 20%;
    }
    .inv-details { max-width: 480px; }
    .inv-story-section { padding: 90px 48px; }
    .inv-countdown-section { padding: 90px 48px; }
    .inv-rsvp-section { padding: 90px 48px; }
    .inv-hero { height: 88vh; }
}}


.invitation-card {
    background-color: var(--color-card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-medium);
    padding: 32px 24px;
    text-align: center;
    border: 1px solid rgba(61, 90, 69, 0.05);
    position: relative;
    overflow: hidden;
}

/* Adornos de hojas decorativas (Opcionales con SVG de fondo) */
.invitation-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 6px;
    background: linear-gradient(to right, var(--color-primary), var(--color-accent), var(--color-secondary));
}

.heart-pulse-icon {
    color: var(--color-secondary);
    animation: pulse-heart 2s infinite ease-in-out;
    margin-bottom: 12px;
    display: inline-block;
}

.celebration-subtitle {
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-text-muted);
    font-weight: 600;
}

.celebration-title {
    font-family: var(--font-serif);
    font-size: 30px;
    color: var(--color-primary);
    margin-top: 4px;
    margin-bottom: 24px;
    font-weight: 700;
}

/* Portarretrato Polaroid moderno */
.main-photo-frame {
    background-color: white;
    padding: 12px 12px 20px 12px;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.07);
    border: 1px solid rgba(0, 0, 0, 0.05);
    transform: rotate(-1.5deg);
    margin-bottom: 28px;
    transition: var(--transition);
}

.main-photo-frame:hover {
    transform: rotate(0) scale(1.02);
}

.main-photo {
    width: 100%;
    height: auto;
    max-height: 380px;
    object-fit: cover;
    border-radius: 6px;
    display: block;
}

.photo-caption {
    font-family: var(--font-serif);
    font-size: 14px;
    font-style: italic;
    color: var(--color-text-muted);
    margin-top: 12px;
}

/* Historia */
.story-section {
    font-size: 15px;
    color: var(--color-text-dark);
    line-height: 1.6;
    margin-bottom: 24px;
    text-align: justify;
}

.story-section p {
    margin-bottom: 12px;
}

.story-section .highlight-text {
    font-family: var(--font-serif);
    font-size: 16px;
    font-weight: 600;
    color: var(--color-primary);
    text-align: center;
    font-style: italic;
}

/* Detalles */
.details-section {
    text-align: left;
    margin-bottom: 28px;
}

.details-section h3 {
    font-family: var(--font-serif);
    color: var(--color-primary);
    font-size: 20px;
    margin-bottom: 16px;
    text-align: center;
    border-bottom: 1px solid rgba(61, 90, 69, 0.1);
    padding-bottom: 8px;
}

.detail-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 20px;
}

.detail-icon {
    font-size: 22px;
    background-color: var(--color-bg);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-shrink: 0;
}

.detail-text {
    display: flex;
    flex-direction: column;
}

.detail-text strong {
    font-size: 14px;
    color: var(--color-text-dark);
    font-weight: 600;
}

.detail-text span {
    font-size: 15px;
    color: var(--color-text-muted);
}

.detail-text .address-sub {
    font-size: 13px;
    color: var(--color-text-muted);
    margin-top: 2px;
}

/* Grid de Botones */
.action-buttons-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 32px;
}

.action-btn {
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    display: inline-flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
    border: 1px solid rgba(0,0,0,0.08);
}

.map-btn {
    background-color: var(--color-bg);
    color: var(--color-primary);
}

.map-btn:hover {
    background-color: rgba(61, 90, 69, 0.08);
}

.calendar-btn {
    background-color: var(--color-bg);
    color: var(--color-text-dark);
}

.calendar-btn:hover {
    background-color: rgba(0,0,0,0.05);
}

/* Contador Regresivo */
.countdown-container {
    background-color: var(--color-bg);
    padding: 20px;
    border-radius: var(--radius-md);
    margin-bottom: 32px;
}

.countdown-container h4 {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-text-muted);
    margin-bottom: 12px;
}

#countdown-timer {
    display: flex;
    justify-content: space-around;
}

.countdown-unit {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.countdown-unit .number {
    font-family: var(--font-serif);
    font-size: 26px;
    font-weight: 700;
    color: var(--color-primary);
}

.countdown-unit .label {
    font-size: 11px;
    color: var(--color-text-muted);
    margin-top: 2px;
}

/* RSVP */
.rsvp-section {
    background-color: #fafbfc;
    border: 1px dashed rgba(61, 90, 69, 0.2);
    border-radius: var(--radius-md);
    padding: 24px;
    text-align: left;
}

.rsvp-section h3 {
    font-family: var(--font-serif);
    color: var(--color-primary);
    font-size: 18px;
    margin-bottom: 4px;
    text-align: center;
}

.rsvp-section .rsvp-help {
    font-size: 12px;
    color: var(--color-text-muted);
    text-align: center;
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text-dark);
    margin-bottom: 6px;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px;
    border: 1px solid rgba(0,0,0,0.12);
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 14px;
    color: var(--color-text-dark);
    background-color: white;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(61, 90, 69, 0.15);
}

/* Responsividad general */
@media (max-width: 380px) {
    #app-container {
        padding: 8px;
    }
    
    #game-screen {
        padding: 10px 8px 8px;
    }
    
    .d-btn {
        width: 44px;
        height: 44px;
    }
    
    .d-pad-row {
        gap: 10px;
    }
    
    #maze-grid {
        max-height: min(270px, 42vh);
    }
}

/* Vista de Rompecabezas Resuelto */
#puzzle-solved-container {
    animation: fadeIn 0.5s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
}

.unlocked-photo-frame {
    background-color: white;
    padding: 8px;
    border-radius: var(--radius-md);
    box-shadow:
        0 0 0 1px rgba(212, 175, 55, 0.3),
        0 8px 32px rgba(212, 175, 55, 0.35),
        0 20px 60px rgba(0,0,0,0.12);
    border: 3px solid var(--color-accent);
    margin: 8px 0 8px;
    width: 100%;        /* ocupa todo el ancho del modal */
    max-width: 100%;
    transition: var(--transition);
    animation: float 3s ease-in-out infinite;
    /* Sin rotación: la foto está en modo protagonista */
    transform: rotate(0deg);
}

.unlocked-photo {
    width: 100%;
    display: block;
    border-radius: calc(var(--radius-sm) - 2px);
    /* contain: muestra la foto COMPLETA sin recortar nada */
    object-fit: contain;
    /* ocupa el máximo posible del viewport manteniendo proporción sin desbordar */
    max-height: 45vh;
    background-color: #f5f5f0; /* fondo neutro si la foto tiene espacios */
}

/* Ocultar instrucciones y reducir márgenes al revelar foto */
.modal-overlay.photo-revealed .puzzle-header p {
    display: none;
}
.modal-overlay.photo-revealed .puzzle-header h3 {
    margin-bottom: 4px;
    font-size: 18px;
}

.unlocked-phrase {
    font-family: var(--font-serif);
    font-size: 15px;
    font-style: italic;
    color: var(--color-primary);
    font-weight: 600;
    line-height: 1.4;
    margin: 10px 0;
    padding: 0 10px;
}

/* ================= SIDEBAR DEL JUEGO (desktop) ================= */
.game-sidebar {
    display: none; /* oculto en móvil */
}

.sidebar-card {
    background: var(--color-bg);
    border-radius: var(--radius-md);
    padding: 20px;
    border: 1px solid rgba(61, 90, 69, 0.08);
}

.sidebar-title {
    font-family: var(--font-serif);
    color: var(--color-primary);
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 14px;
    padding-bottom: 8px;
    border-bottom: 1px solid rgba(61, 90, 69, 0.1);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
    font-size: 13px;
    color: var(--color-text-dark);
}

.legend-icon {
    width: 28px;
    height: 28px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    border: 1px solid rgba(0,0,0,0.07);
    flex-shrink: 0;
}

/* Teclas de teclado */
.keyboard-grid {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.key-row {
    display: flex;
    gap: 6px;
}

kbd {
    background: white;
    border: 1px solid rgba(0,0,0,0.15);
    border-bottom: 3px solid rgba(0,0,0,0.2);
    border-radius: 6px;
    padding: 6px 10px;
    font-family: var(--font-sans);
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text-dark);
    min-width: 36px;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.06);
}

.key-alt {
    font-size: 11px;
    color: var(--color-text-muted);
    margin-top: 10px;
    display: flex;
    align-items: center;
    gap: 4px;
    flex-wrap: wrap;
    justify-content: center;
}

.key-alt kbd {
    padding: 3px 7px;
    font-size: 11px;
    min-width: 24px;
}

/* Indicadores de progreso */
#progress-indicators {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.progress-dot {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(61, 90, 69, 0.07);
    border: 2px dashed rgba(61, 90, 69, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    transition: var(--transition);
    filter: grayscale(1);
    opacity: 0.4;
}

.progress-dot.unlocked {
    filter: grayscale(0);
    opacity: 1;
    border-style: solid;
    border-color: var(--color-accent);
    background: rgba(212, 175, 55, 0.08);
    animation: pulse-heart 2s infinite;
}


/* ================= HINT DE TECLADO (solo desktop) ================= */
.keyboard-hint {
    display: none; /* oculto en móvil */
    font-size: 13px;
    color: var(--color-text-muted);
    margin-top: 10px;
    background: rgba(61, 90, 69, 0.06);
    border-radius: 50px;
    padding: 5px 16px;
    display: inline-block;
}

/* Ocultar tip de móvil en desktop */
.mobile-only {
    display: block;
}

/* ================= LAYOUT DESKTOP (≥ 768px) ================= */
@media (min-width: 768px) {

    /* El hint de teclado se muestra */
    .keyboard-hint {
        display: inline-block;
    }

    /* El D-Pad se oculta: el teclado es suficiente */
    .controls-container {
        display: none;
    }

    /* Tip de móvil oculto */
    .mobile-only {
        display: none;
    }

    /* El contenedor de la app se expande */
    #app-container {
        max-width: 1200px;
        padding: 32px 40px;
    }

    /* === PANTALLA DE JUEGO: CENTRADA SIN SIDEBAR (desktop override) === */
    #game-screen {
        height: auto;
        overflow: visible;
        display: flex;
        flex-direction: column;
        align-items: center;
        text-align: center;
        padding: 40px 24px;
    }
 
    .game-header {
        text-align: center;
        margin-bottom: 32px;
        display: flex;
        flex-direction: column;
        align-items: center;
    }
 
    .game-header h1 {
        font-size: 36px;
        cursor: pointer; /* Feedback visual para el atajo secreto */
    }
 
    .game-header .instructions {
        font-size: 16px;
        max-width: 600px;
        margin: 0 auto;
    }
 
    .maze-wrapper {
        margin-bottom: 0;
        padding: 20px;
        display: flex;
        justify-content: center;
        flex: initial;
        min-height: initial;
    }
 
    #maze-grid {
        max-width: 460px;
        max-height: none;
        gap: 6px;
    }
 
    .skip-container {
        text-align: center;
        margin-top: 20px;
    }
 
    .skip-container .secondary-btn {
        width: auto;
        padding: 10px 24px;
    }
 
    /* Panel lateral derecho oculto completamente */
    .game-sidebar {
        display: none !important;
    }
 
    /* Modal rompecabezas en desktop */
    .modal-content {
        max-width: 560px;
        padding: 36px;
    }
 
    /* Modal expandido con foto revelada en desktop - Maximizado */
    .modal-overlay.photo-revealed .modal-content {
        max-width: min(1000px, 96vw);
        padding: 16px 16px 22px;
    }

    .unlocked-photo {
        max-height: 65vh;
    }

    /* === PANTALLA INVITACIÓN: DOS COLUMNAS === */
    .invitation-card {
        padding: 60px 56px;
        text-align: left;
    }

    /* Barra superior de color ocupa el ancho completo */
    .invitation-card::before {
        height: 8px;
    }

    /* Layout interior en dos columnas */
    .invitation-layout {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 48px;
        align-items: start;
    }

    /* Encabezado centrado arriba en toda la anchura */
    .invitation-header {
        grid-column: 1 / -1;
        text-align: center;
        margin-bottom: 8px;
    }

    .celebration-title {
        font-size: 44px;
    }

    .celebration-subtitle {
        font-size: 14px;
    }

    /* Columna izquierda: foto + historia */
    .invitation-left {
        display: flex;
        flex-direction: column;
        gap: 24px;
    }

    /* Columna derecha: detalles + contador + RSVP */
    .invitation-right {
        display: flex;
        flex-direction: column;
        gap: 24px;
    }

    .story-section {
        font-size: 16px;
        text-align: left;
    }

    .story-section .highlight-text {
        text-align: left;
        font-size: 17px;
    }

    .main-photo-frame {
        transform: rotate(-1deg);
    }

    .main-photo {
        max-height: 340px;
    }

    /* El divider horizontal ocupa todo el ancho */
    .divider-full {
        grid-column: 1 / -1;
    }

    .details-section h3 {
        text-align: left;
    }

    .countdown-container {
        padding: 24px 28px;
    }

    .countdown-unit .number {
        font-size: 34px;
    }

    .rsvp-section {
        padding: 28px;
    }

    .rsvp-section h3 {
        text-align: left;
    }

    .rsvp-section .rsvp-help {
        text-align: left;
    }
}

/* ================= LAYOUT WIDE DESKTOP (≥ 1100px) ================= */
@media (min-width: 1100px) {
    #app-container {
        padding: 40px 60px;
    }

    #game-screen.active-screen {
        display: grid;
        grid-template-columns: 1fr 380px;
        gap: 36px;
        align-items: start;
        padding: 48px 56px;
        height: auto;
    }

    #maze-grid {
        max-width: 520px;
        max-height: 520px;
    }

    .game-header h1 {
        font-size: 42px;
    }
}

/* Panel de información y leyenda del juego (restaurado) */
.game-info-panel {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 16px;
    flex-shrink: 0;
}

.info-card {
    background: #f8f9fa;
    border: 1px solid rgba(61, 90, 69, 0.08);
    border-radius: var(--radius-md);
    padding: 16px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.02);
}

.info-title {
    font-family: var(--font-serif);
    font-size: 14px;
    font-weight: 700;
    color: var(--color-primary);
    margin-top: 0;
    margin-bottom: 12px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    border-bottom: 1px solid rgba(61, 90, 69, 0.1);
    padding-bottom: 6px;
}

.legend-items-container {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 13px;
    color: var(--color-text-dark);
}

.legend-icon {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 14px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.keyboard-info-card p {
    margin: 0;
    font-size: 12px;
    color: var(--color-text-muted);
    line-height: 1.5;
}

.keyboard-info-card kbd {
    background: #ffffff;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-shadow: 0 1px 0 rgba(0,0,0,0.2), 0 0 0 2px #fff inset;
    color: #333;
    display: inline-block;
    font-family: var(--font-sans);
    font-size: 11px;
    font-weight: 700;
    line-height: 1.4;
    margin: 0 2px;
    padding: 2px 5px;
    text-shadow: 0 1px 0 #fff;
}

@media (max-width: 768px) {
    .keyboard-info-card {
        display: none;
    }
}

@media (min-width: 1100px) {
    .game-info-panel {
        margin-top: 0;
    }
}