/* ============================================================
   public/Spellsanimations/fury.css
   Efeito da spell "Fury" do Knight: uma espada em pixel art
   (box-shadow, técnica do punch.css) que é telegrafada no chão
   (sigilo), cai do alto ganhando tamanho e crava no alvo, com
   impacto (flash, cratera, rachaduras, faíscas) e brilho
   pulsante em repouso. 100% CSS/DOM, sem PNG/sprite sheet.

   Integração: #melee-fx-layer + spawnFuryFX() em game.js.
   O layer é sincronizado com a câmera a cada frame, então os
   filhos são posicionados em px de mundo. O ponto (0,0) do
   .fury-fx__stage é o ponto de impacto/ancoragem (left/top do
   fx definidos via JS), mesmo esquema do soco (punch.css).
   ============================================================ */

.fury-fx {
    position: absolute;
    left: 0;
    top: 0;
    width: 0;
    height: 0;
    pointer-events: none;
    z-index: 40;
    image-rendering: pixelated;
    /* Ancora o ponto de impacto no left/top setado via JS */
    transform: translate(-50%, -100%);
}

/* --------------------------------------------------------------
   Palco interno: sistema de coordenadas fixo (px de mundo).
   Recebe a tremedeira (shake) no fim da queda + impacto.
   -------------------------------------------------------------- */
.fury-fx__stage {
    position: absolute;
    left: 0;
    top: 0;
    width: 1px;
    height: 1px;
    animation: fury-shake 0.25s linear 0.58s both;
}

/* --------------------------------------------------------------
   FASE 1 — Sigilo de telegrafia (elipse achatada + cruz), girando
   no chão enquanto a espada se aproxima.
   -------------------------------------------------------------- */
.fury-fx__sigil {
    position: absolute;
    left: 0;
    top: 0;
    width: 18px;
    height: 7px;
    border: 1px solid rgba(255, 204, 0, 0.9);
    border-radius: 50%;
    opacity: 0;
    transform-origin: center;
    animation: fury-sigil 0.667s ease-out 0s both;
    box-shadow: 0 0 5px rgba(255, 204, 0, 0.35);
}

.fury-fx__sigil::before {
    content: "";
    position: absolute;
    left: 50%;
    top: 50%;
    width: 26px;
    height: 1px;
    background: rgba(255, 204, 0, 0.85);
    transform: translate(-50%, -50%);
}

.fury-fx__sigil::after {
    content: "";
    position: absolute;
    left: 50%;
    top: 50%;
    width: 1px;
    height: 9px;
    background: rgba(255, 204, 0, 0.85);
    transform: translate(-50%, -50%);
}

@keyframes fury-sigil {
    0% {
        opacity: 0;
        transform: translate(-50%, -50%) rotate(0deg) scale(0.3);
    }
    15% {
        opacity: 0.9;
    }
    85% {
        opacity: 0.4;
    }
    100% {
        opacity: 0;
        transform: translate(-50%, -50%) rotate(200deg) scale(1.2);
    }
}

/* --------------------------------------------------------------
   Sombra projetada no chão (elipse achatada) crescendo durante a
   queda, some no instante do impacto.
   -------------------------------------------------------------- */
.fury-fx__shadow {
    position: absolute;
    left: 0;
    top: 0;
    width: 16px;
    height: 5px;
    border-radius: 50%;
    background: radial-gradient(ellipse at center,
        rgba(0, 0, 0, 0.5) 0%, rgba(0, 0, 0, 0.35) 55%, rgba(0, 0, 0, 0) 75%);
    opacity: 0;
    animation: fury-shadow 0.667s ease-out 0s both;
}

@keyframes fury-shadow {
    0% {
        opacity: 0.5;
        transform: translate(-50%, -50%) scale(0.22);
    }
    30% {
        opacity: 0.62;
        transform: translate(-50%, -50%) scale(0.55);
    }
    65% {
        opacity: 0.75;
        transform: translate(-50%, -50%) scale(0.85);
    }
    100% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(1.05);
    }
}

/* --------------------------------------------------------------
   FASE 2 — Espada em pixel art caindo do alto e ganhando tamanho
   (ancorada pela ponta no ponto de impacto). Sprite 11x23,
   desenhado em box-shadow (1px = 1px).
   -------------------------------------------------------------- */
.fury-fx__sword {
    position: absolute;
    left: 0;
    top: 0;
    width: 0;
    height: 0;
    transform-origin: 0 0; /* ponta da espada = ponto de impacto */
    animation:
        fury-drop 0.3s steps(1) 0.367s both,
        fury-sword-glow 0.667s ease-out 0s both;
}

.fury-fx__pixels {
    position: absolute;
    left: -5px;
    top: -23px;
    width: 1px;
    height: 1px;
    background: transparent;
    box-shadow:
        4px 0px #141414,
        5px 0px #141414,
        6px 0px #141414,
        3px 1px #141414,
        4px 1px #e8b23d,
        5px 1px #e8b23d,
        6px 1px #e8b23d,
        7px 1px #141414,
        3px 2px #141414,
        4px 2px #a3701a,
        5px 2px #a3701a,
        6px 2px #a3701a,
        7px 2px #141414,
        4px 3px #141414,
        5px 3px #141414,
        6px 3px #141414,
        4px 4px #141414,
        5px 4px #a3701a,
        6px 4px #141414,
        3px 5px #141414,
        4px 5px #5c3a1c,
        5px 5px #3a2211,
        6px 5px #5c3a1c,
        7px 5px #141414,
        3px 6px #141414,
        4px 6px #3a2211,
        5px 6px #5c3a1c,
        6px 6px #3a2211,
        7px 6px #141414,
        3px 7px #141414,
        4px 7px #5c3a1c,
        5px 7px #3a2211,
        6px 7px #5c3a1c,
        7px 7px #141414,
        4px 8px #141414,
        5px 8px #a3701a,
        6px 8px #141414,
        0px 9px #141414,
        1px 9px #e8b23d,
        2px 9px #e8b23d,
        3px 9px #e8b23d,
        4px 9px #e8b23d,
        5px 9px #e8b23d,
        6px 9px #e8b23d,
        7px 9px #e8b23d,
        8px 9px #e8b23d,
        9px 9px #e8b23d,
        10px 9px #141414,
        0px 10px #141414,
        1px 10px #a3701a,
        2px 10px #a3701a,
        3px 10px #a3701a,
        4px 10px #a3701a,
        5px 10px #a3701a,
        6px 10px #a3701a,
        7px 10px #a3701a,
        8px 10px #a3701a,
        9px 10px #a3701a,
        10px 10px #141414,
        2px 11px #141414,
        3px 11px #a3701a,
        4px 11px #a3701a,
        5px 11px #a3701a,
        6px 11px #a3701a,
        7px 11px #a3701a,
        8px 11px #141414,
        2px 12px #141414,
        3px 12px #5d636b,
        4px 12px #9aa1a8,
        5px 12px #cfd3d6,
        6px 12px #9aa1a8,
        7px 12px #5d636b,
        8px 12px #141414,
        1px 13px #141414,
        2px 13px #5d636b,
        3px 13px #9aa1a8,
        4px 13px #cfd3d6,
        5px 13px #cfd3d6,
        6px 13px #9aa1a8,
        7px 13px #9aa1a8,
        8px 13px #5d636b,
        9px 13px #141414,
        1px 14px #141414,
        2px 14px #5d636b,
        3px 14px #9aa1a8,
        4px 14px #cfd3d6,
        5px 14px #cfd3d6,
        6px 14px #9aa1a8,
        7px 14px #9aa1a8,
        8px 14px #5d636b,
        9px 14px #141414,
        1px 15px #141414,
        2px 15px #5d636b,
        3px 15px #9aa1a8,
        4px 15px #cfd3d6,
        5px 15px #cfd3d6,
        6px 15px #9aa1a8,
        7px 15px #9aa1a8,
        8px 15px #5d636b,
        9px 15px #141414,
        2px 16px #141414,
        3px 16px #5d636b,
        4px 16px #9aa1a8,
        5px 16px #cfd3d6,
        6px 16px #9aa1a8,
        7px 16px #5d636b,
        8px 16px #141414,
        2px 17px #141414,
        3px 17px #5d636b,
        4px 17px #9aa1a8,
        5px 17px #cfd3d6,
        6px 17px #9aa1a8,
        7px 17px #5d636b,
        8px 17px #141414,
        3px 18px #141414,
        4px 18px #5d636b,
        5px 18px #cfd3d6,
        6px 18px #5d636b,
        7px 18px #141414,
        3px 19px #141414,
        4px 19px #5d636b,
        5px 19px #cfd3d6,
        6px 19px #5d636b,
        7px 19px #141414,
        4px 20px #141414,
        5px 20px #9aa1a8,
        6px 20px #141414,
        4px 21px #141414,
        5px 21px #9aa1a8,
        6px 21px #141414,
        5px 22px #141414;
}

/* Espada cai em degraus inteiros (steps(1)) com ~15 poses em 0,3s
   (passagem suave), SEM scale: o scale fracionário interpolava o pixel
   art e borrava a lâmina. Impacto em 100% ≈ 0.667s, batendo com o
   hitDelayMs: 650. */
@keyframes fury-drop {
    0%   { opacity: 0; transform: translateY(-23px) rotate(-8deg); }
    5%   { opacity: 1; }
    10%  { transform: translateY(-21px) rotate(-7deg); }
    17%  { transform: translateY(-19px) rotate(-6deg); }
    24%  { transform: translateY(-17px) rotate(-5deg); }
    31%  { transform: translateY(-15px) rotate(-4deg); }
    38%  { transform: translateY(-13px) rotate(-3deg); }
    45%  { transform: translateY(-11px) rotate(-2deg); }
    52%  { transform: translateY(-9px) rotate(-1deg); }
    59%  { transform: translateY(-7px) rotate(-1deg); }
    66%  { transform: translateY(-5px) rotate(0deg); }
    73%  { transform: translateY(-3px) rotate(1deg); }
    80%  { transform: translateY(-1px) rotate(1deg); }
    88%  { transform: translateY(0px) rotate(1deg); }
    100% { transform: translateY(1px) rotate(0deg); }   /* impacto */
}

@keyframes fury-sword-glow {
    0%   { filter: drop-shadow(0 0 1px rgba(255, 214, 150, 0)); }
    35%  { filter: drop-shadow(0 0 4px rgba(255, 214, 150, 0.9)); }
    75%  { filter: drop-shadow(0 0 8px rgba(255, 214, 150, 1)); }
    100% { filter: drop-shadow(0 0 2px rgba(255, 214, 150, 0)); }
}

/* --------------------------------------------------------------
   Rastro (motion blur) que se alonga pra cima durante a queda
   -------------------------------------------------------------- */
.fury-fx__trail {
    position: absolute;
    left: -1px;
    top: -64px;
    width: 2px;
    height: 64px;
    background: linear-gradient(to bottom,
        rgba(255, 255, 255, 0) 0%, rgba(255, 220, 160, 0.5) 55%, rgba(255, 220, 160, 0) 100%);
    transform-origin: 50% 100%;
    opacity: 0;
    animation: fury-trail 0.3s ease-in 0.367s both;
}

@keyframes fury-trail {
    0% {
        opacity: 0;
        transform: scaleY(0.15);
    }
    30% {
        opacity: 0.85;
    }
    100% {
        opacity: 0;
        transform: scaleY(1);
    }
}

/* --------------------------------------------------------------
   FASE 3 — Impacto: flash branco radial
   -------------------------------------------------------------- */
.fury-fx__flash {
    position: absolute;
    left: 0;
    top: 0;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: radial-gradient(circle,
        rgba(255, 248, 224, 0.95) 0%, rgba(255, 224, 160, 0.5) 45%, rgba(255, 224, 160, 0) 75%);
    opacity: 0;
    animation: fury-flash 0.22s ease-out 0.667s both;
}

@keyframes fury-flash {
    0%   { opacity: 0.95; transform: translate(-50%, -50%) scale(0.3); }
    100% { opacity: 0; transform: translate(-50%, -50%) scale(1.6); }
}

/* --------------------------------------------------------------
   Brilho dourado: forte no impacto, apaga no settle e pulsa no
   repouso (fases 4 e 5 da animação original).
   -------------------------------------------------------------- */
.fury-fx__glow {
    position: absolute;
    left: 0;
    top: 0;
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: radial-gradient(circle,
        rgba(255, 210, 140, 0.55) 0%, rgba(255, 190, 110, 0.22) 45%, rgba(255, 190, 110, 0) 72%);
    opacity: 0;
    animation: fury-glow 1.8s linear 0s both;
}

@keyframes fury-glow {
    0%   { opacity: 0; transform: translate(-50%, -50%) scale(0.4); }
    37%  { opacity: 0.9; transform: translate(-50%, -50%) scale(0.7); }
    46%  { opacity: 0.5; transform: translate(-50%, -50%) scale(1); }
    74%  { opacity: 0.14; transform: translate(-50%, -50%) scale(1.25); }
    80%  { opacity: 0.3; }
    90%  { opacity: 0.1; }
    100% { opacity: 0.22; }
}

/* --------------------------------------------------------------
   Cratera achatada (elipse) no chão após o impacto
   -------------------------------------------------------------- */
.fury-fx__crater {
    position: absolute;
    left: -8px;
    top: -3px;
    width: 16px;
    height: 6px;
    border: 1px solid rgba(92, 58, 23, 0.75);
    border-radius: 50%;
    opacity: 0;
    animation: fury-crater 0.167s ease-out 0.667s both;
}

@keyframes fury-crater {
    0%   { opacity: 0; transform: scale(0.25); }
    100% { opacity: 1; transform: scale(1); }
}

/* --------------------------------------------------------------
   Rachaduras radiais saindo do ponto de impacto (geradas via JS
   em spawnFuryFX, uma por direção).
   -------------------------------------------------------------- */
.fury-fx__cracks {
    position: absolute;
    left: 0;
    top: 0;
    width: 0;
    height: 0;
}

.fury-fx__crack {
    position: absolute;
    left: 0;
    top: 0;
    width: 0;
    height: 2px;
    background: rgba(92, 58, 23, 0.85);
    transform: rotate(var(--fury-crack-angle, 0deg)) translateY(-1px);
    transform-origin: 0 0;
    opacity: 0;
    animation: fury-crack 0.167s steps(1) 0.667s both;
}

/* Rachaduras em larguras inteiras (0 → 4 → 7), sem interpolação */
@keyframes fury-crack {
    0%   { opacity: 0; width: 0; }
    40%  { opacity: 1; width: 4px; }
    100% { opacity: 1; width: 7px; }
}

/* --------------------------------------------------------------
   Faíscas/partículas do impacto (espalhadas pelo chão, fan 360°).
   --fury-spark-x/y e cor definidos inline no spawnFuryFX.
   -------------------------------------------------------------- */
.fury-fx__spark {
    position: absolute;
    left: 0;
    top: 0;
    width: 2px;
    height: 2px;
    background: var(--fury-spark-color, #ffcc00);
    opacity: 0;
    transform: translate(-50%, -50%);
    animation: fury-spark 0.42s steps(1) 0.66s forwards;
}

/* Faíscas em degraus: pulam direto pro destino inteiro (--fury-spark-x/y)
   e apagam — sem scale (o shrink fracionário borrava o quadradinho). */
@keyframes fury-spark {
    0% {
        opacity: 0;
        transform: translate(-50%, -50%) translate(0, 0);
    }
    12% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        transform: translate(-50%, -50%) translate(var(--fury-spark-x, 0px), var(--fury-spark-y, 0px));
    }
}

.fury-fx__spark:nth-child(odd) {
    width: 2px;
    height: 2px;
}

/* --------------------------------------------------------------
   Tremedeira de tela no fim da queda + impacto (0.58s -> 0.83s),
   em px inteiros pra não borrar o pixel art durante o shake
   -------------------------------------------------------------- */
@keyframes fury-shake {
    0%, 100% { transform: translate(0, 0); }
    15% { transform: translate(2px, -1px); }
    35% { transform: translate(-2px, 1px); }
    55% { transform: translate(1px, 2px); }
    75% { transform: translate(-1px, -2px); }
}