:root {
    --fondo: #04080c;
    --cyan: #00b7ff;
    --verde: #39ff14;
    --naranja: #ff7b00;
    --rosa: #ff2d9b;
    --panel: #0a1018;
    --borde: #1a2530;
}

/* ── TÍTULOS ──────────────────────────────────────────── */
.logo-juego {
    display: block;
    max-width: 180px;
    width: 40%;
    margin: 24px auto 0;
    filter: drop-shadow(0 0 14px rgba(0, 183, 255, 0.35));
}

.titulo-juego {
    text-align: center;
    font-family: 'Orbitron', sans-serif;
    font-weight: 900;
    font-size: clamp(1.6em, 5vw, 2.4em);
    letter-spacing: 2px;
    margin: 24px 0 4px;
    background: linear-gradient(90deg, var(--cyan), var(--verde));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: 0 0 30px rgba(0, 183, 255, 0.3);
}

.subtitulo-juego {
    text-align: center;
    color: #6b8299;
    font-size: 0.85em;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 24px;
}

/* ── CONTENEDOR PRINCIPAL ────────────────────────────────── */
.snow-container {
    width: 100%;
    max-width: 920px;
    margin: 0 auto;
    padding: 0 16px 40px;
}

/* ── WRAPPER DEL JUEGO ───────────────────────────────────── */
.game-wrapper {
    background: var(--panel);
    border: 1px solid var(--borde);
    border-radius: 16px;
    overflow: hidden;
    box-shadow:
        0 0 0 1px rgba(0, 183, 255, 0.08),
        0 20px 60px rgba(0, 0, 0, 0.5),
        inset 0 1px 0 rgba(255, 255, 255, 0.03);
    position: relative;
}

.game-screen {
    width: 100%;
    aspect-ratio: 4 / 5;
    max-height: 720px;
    background: linear-gradient(180deg, #0d1826 0%, #0a1420 55%, #060c14 100%);
    position: relative;
    overflow: hidden;
}

.game-screen::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(1px 1px at 15% 20%, rgba(255, 255, 255, 0.4), transparent),
        radial-gradient(1px 1px at 45% 60%, rgba(255, 255, 255, 0.3), transparent),
        radial-gradient(1px 1px at 75% 30%, rgba(255, 255, 255, 0.35), transparent),
        radial-gradient(1px 1px at 85% 75%, rgba(255, 255, 255, 0.25), transparent),
        radial-gradient(1px 1px at 25% 85%, rgba(255, 255, 255, 0.3), transparent);
    pointer-events: none;
}

/* ── HUD ──────────────────────────────────────────────────── */
.nivel-info {
    position: absolute;
    top: 14px;
    left: 14px;
    background: rgba(4, 8, 12, 0.75);
    backdrop-filter: blur(6px);
    border: 1px solid rgba(0, 183, 255, 0.3);
    padding: 8px 16px;
    border-radius: 8px;
    font-family: 'Orbitron', sans-serif;
    font-weight: 700;
    font-size: 0.85em;
    letter-spacing: 1px;
    color: var(--cyan);
    z-index: 10;
}

.nivel-info span {
    color: var(--verde);
}

.vidas-info {
    position: absolute;
    top: 14px;
    right: 14px;
    background: rgba(4, 8, 12, 0.75);
    backdrop-filter: blur(6px);
    border: 1px solid rgba(255, 45, 155, 0.3);
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 1em;
    z-index: 10;
    letter-spacing: 4px;
}

.corazon.perdido {
    opacity: 0.2;
    filter: grayscale(1);
}

/* ── JUGADOR ──────────────────────────────────────────────── */
.player {
    position: absolute;
    bottom: 90px;
    left: 50px;
    width: 34px;
    height: 44px;
    z-index: 6;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6em;
    filter: drop-shadow(0 0 8px rgba(0, 183, 255, 0.6));
}

.player.mirando-izq {
    transform: scaleX(-1);
}

/* ── PLATAFORMAS ──────────────────────────────────────────── */
.platform {
    position: absolute;
    background: linear-gradient(180deg, #16324a 0%, #0d2033 100%);
    border-top: 2px solid var(--cyan);
    border-radius: 3px;
    box-shadow: 0 4px 12px rgba(0, 183, 255, 0.15);
    z-index: 3;
}

.linea-piso {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 46px;
    background: linear-gradient(180deg, #0f1e2e 0%, #060c14 100%);
    border-top: 2px solid var(--verde);
    box-shadow: 0 -4px 20px rgba(57, 255, 20, 0.1);
    z-index: 3;
}

/* ── ENEMIGOS ─────────────────────────────────────────────── */
.enemy {
    position: absolute;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: radial-gradient(circle at 35% 30%, #ff5fb8, var(--rosa));
    box-shadow: 0 0 14px rgba(255, 45, 155, 0.5);
    z-index: 4;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9em;
}

.enemy.frozen {
    background: radial-gradient(circle at 35% 30%, #cdeeff, var(--cyan));
    box-shadow: 0 0 14px rgba(0, 183, 255, 0.6);
    animation: congelado 0.3s ease;
}

@keyframes congelado {
    0% { transform: scale(1); }
    50% { transform: scale(1.15); }
    100% { transform: scale(1); }
}

/* ── PROYECTILES ──────────────────────────────────────────── */
.snowball {
    position: absolute;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: radial-gradient(circle at 35% 30%, #ffffff, #b8e8ff);
    box-shadow: 0 0 10px rgba(0, 183, 255, 0.8);
    z-index: 5;
}

/* ── AVISO NIVEL ──────────────────────────────────────────── */
.aviso-nivel {
    position: absolute;
    top: 40%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    z-index: 20;
    pointer-events: none;
}

.aviso-nivel span {
    display: block;
    font-size: 0.9em;
    letter-spacing: 4px;
    color: var(--cyan);
}

.aviso-nivel strong {
    display: block;
    font-family: 'Orbitron', sans-serif;
    font-size: 3em;
    color: var(--verde);
    text-shadow: 0 0 20px var(--verde);
}

.oculto {
    display: none !important;
}

/* ── OVERLAYS ─────────────────────────────────────────────── */
.overlay {
    position: absolute;
    inset: 0;
    background: #04080c;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 50;
    padding: 20px;
    overflow-y: auto;
}

.overlay-content {
    text-align: center;
    max-width: 380px;
    width: 100%;
}

.overlay-content h2 {
    font-family: 'Orbitron', sans-serif;
    font-weight: 900;
    font-size: 1.7em;
    letter-spacing: 1px;
    margin-bottom: 16px;
    background: linear-gradient(90deg, var(--cyan), var(--verde));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.overlay-content p {
    font-size: 0.95em;
    line-height: 1.6;
    color: #a8bcc9;
    margin-bottom: 22px;
}

.overlay-content h3 {
    font-family: 'Orbitron', sans-serif;
    font-weight: 800;
    font-size: 1.4em;
    color: var(--verde);
    text-shadow: 0 0 16px rgba(57, 255, 20, 0.5);
    margin-bottom: 18px;
    letter-spacing: 1px;
}

.titulo-game-over {
    color: var(--rosa) !important;
    text-shadow: 0 0 16px rgba(255, 45, 155, 0.5) !important;
}

/* ── INPUTS ───────────────────────────────────────────────── */
.codigo-input {
    width: 100%;
    padding: 13px 16px;
    margin-bottom: 12px;
    font-size: 1.05em;
    border: 1px solid var(--borde);
    background: rgba(0, 0, 0, 0.35);
    color: var(--cyan);
    border-radius: 8px;
    font-family: 'Orbitron', monospace;
    letter-spacing: 3px;
    text-transform: uppercase;
    text-align: center;
    outline: none;
    transition: border-color 0.2s;
}

.codigo-input:focus {
    border-color: var(--cyan);
    box-shadow: 0 0 0 3px rgba(0, 183, 255, 0.15);
}

.codigo-input::placeholder {
    color: #3a5266;
    letter-spacing: 2px;
}

/* ── BOTONES ──────────────────────────────────────────────── */
.btn-primario,
.btn-secundario {
    font-family: 'Chakra Petch', sans-serif;
    font-weight: 700;
    border: none;
    padding: 13px 28px;
    font-size: 0.95em;
    letter-spacing: 1px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    margin: 6px 4px;
}

.btn-primario {
    background: linear-gradient(135deg, var(--verde), #2ecc0f);
    color: #04140a;
    box-shadow: 0 4px 16px rgba(57, 255, 20, 0.25);
}

.btn-primario:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 22px rgba(57, 255, 20, 0.4);
}

.btn-secundario {
    background: transparent;
    color: var(--cyan);
    border: 1px solid rgba(0, 183, 255, 0.4);
}

.btn-secundario:hover {
    background: rgba(0, 183, 255, 0.08);
    border-color: var(--cyan);
}

.btn-full {
    width: 100%;
    display: block;
}

/* ── CÓDIGO GUARDADO ──────────────────────────────────────── */
.codigo-guardado {
    background: rgba(0, 0, 0, 0.4);
    padding: 18px;
    border: 1px solid rgba(57, 255, 20, 0.4);
    border-radius: 10px;
    margin: 18px 0;
    font-family: 'Orbitron', monospace;
    font-size: 1.3em;
    color: var(--verde);
    letter-spacing: 4px;
    font-weight: 800;
    text-shadow: 0 0 12px rgba(57, 255, 20, 0.4);
}

.codigo-info {
    font-size: 0.8em;
    color: #6b8299;
    margin-bottom: 6px;
    letter-spacing: 0.5px;
}

.mensaje-error {
    color: #ff5f7a;
    font-size: 0.85em;
    margin-top: 4px;
    letter-spacing: 0.5px;
    min-height: 18px;
}

/* ── TOAST ────────────────────────────────────────────────── */
.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: var(--panel);
    border: 1px solid var(--verde);
    color: var(--verde);
    padding: 12px 22px;
    border-radius: 8px;
    font-size: 0.9em;
    letter-spacing: 0.5px;
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s;
    z-index: 200;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* ── CONTROLES MÓVILES ────────────────────────────────────── */
.controles-moviles {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px;
    background: var(--panel);
    border-top: 1px solid var(--borde);
}

.dpad {
    display: grid;
    grid-template-columns: repeat(3, 52px);
    grid-template-rows: repeat(2, 52px);
    gap: 6px;
}

.btn-control {
    width: 52px;
    height: 52px;
    border-radius: 10px;
    background: rgba(0, 183, 255, 0.1);
    border: 1px solid rgba(0, 183, 255, 0.3);
    color: var(--cyan);
    font-size: 1.3em;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0;
    user-select: none;
    -webkit-user-select: none;
    touch-action: manipulation;
    cursor: pointer;
}

#btn-salto {
    grid-column: 2;
    grid-row: 1;
}

#btn-izq {
    grid-column: 1;
    grid-row: 2;
}

#btn-der {
    grid-column: 3;
    grid-row: 2;
}

.btn-control:active {
    background: rgba(0, 183, 255, 0.25);
    transform: scale(0.95);
}

.btn-disparo {
    width: 70px;
    height: 52px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--rosa), #d61a7a);
    border: none;
    color: #fff;
    font-size: 0.85em;
    font-weight: 700;
    box-shadow: 0 4px 14px rgba(255, 45, 155, 0.3);
    margin: 0;
    cursor: pointer;
    font-family: 'Chakra Petch', sans-serif;
}

.btn-disparo:active {
    transform: scale(0.95);
}

.footer-nota {
    text-align: center;
    margin-top: 18px;
    color: #4a6072;
    font-size: 0.8em;
}

@media (min-width: 640px) {
    .controles-moviles {
        display: none;
    }
}