/* Transicion visual de entrada a duelo. No modifica tablero, cartas ni reglas. */
.duel-encounter-transition {
    position: fixed;
    inset: 0;
    z-index: 9998;
    display: grid;
    place-items: center;
    overflow: hidden;
    color: #fff7d6;
    background:
        radial-gradient(circle at 50% 50%, rgba(25, 72, 150, 0.35), transparent 26%),
        radial-gradient(circle at 50% 50%, rgba(244, 199, 106, 0.18), transparent 38%),
        rgba(2, 6, 17, 0.94);
    pointer-events: auto;
    opacity: 0;
    transform: scale(1.04);
}

.duel-encounter-transition.is-active {
    animation: duelEncounterStage 1500ms ease-in-out forwards;
}

.duel-encounter-vortex,
.duel-encounter-flash,
.duel-encounter-runes,
.duel-encounter-lines {
    position: absolute;
    inset: -18vmax;
    pointer-events: none;
}

.duel-encounter-vortex {
    background:
        conic-gradient(from 0deg, transparent 0 10deg, rgba(244, 199, 106, 0.34) 13deg 18deg, transparent 22deg 44deg, rgba(45, 124, 255, 0.26) 48deg 56deg, transparent 60deg 90deg),
        radial-gradient(circle, transparent 0 18%, rgba(8, 21, 50, 0.6) 31%, transparent 46%);
    filter: blur(0.5px);
    animation: duelEncounterSpin 1500ms cubic-bezier(.18,.84,.32,1) forwards;
}

.duel-encounter-lines {
    inset: 0;
    background:
        linear-gradient(90deg, transparent 0 46%, rgba(244, 199, 106, 0.5) 49%, transparent 52%),
        linear-gradient(0deg, transparent 0 47%, rgba(45, 124, 255, 0.42) 50%, transparent 53%);
    transform: scaleX(0);
    animation: duelEncounterLines 1500ms ease-in-out forwards;
}

.duel-encounter-runes {
    inset: 12%;
    border: 1px solid rgba(244, 199, 106, 0.42);
    border-radius: 999px;
    box-shadow:
        inset 0 0 32px rgba(45, 124, 255, 0.26),
        0 0 54px rgba(244, 199, 106, 0.24);
    animation: duelEncounterRunePulse 1500ms ease-in-out forwards;
}

.duel-encounter-runes::before,
.duel-encounter-runes::after {
    content: "";
    position: absolute;
    inset: 10%;
    border: 1px dashed rgba(244, 199, 106, 0.42);
    border-radius: inherit;
}

.duel-encounter-runes::after {
    inset: 23%;
    border-color: rgba(45, 124, 255, 0.5);
    transform: rotate(18deg);
}

.duel-encounter-flash {
    inset: 0;
    background:
        radial-gradient(circle, rgba(255, 248, 214, 0.96) 0 8%, rgba(244, 199, 106, 0.46) 12%, transparent 28%),
        linear-gradient(90deg, transparent, rgba(255, 248, 214, 0.48), transparent);
    opacity: 0;
    animation: duelEncounterFlash 1500ms ease-in-out forwards;
}

.duel-encounter-title {
    position: relative;
    z-index: 2;
    padding: 18px 30px;
    border: 1px solid rgba(244, 199, 106, 0.52);
    border-radius: 18px;
    font-size: clamp(1.9rem, 6vw, 4.8rem);
    font-weight: 950;
    letter-spacing: 0.08em;
    text-align: center;
    text-transform: uppercase;
    text-shadow: 0 4px 0 rgba(0, 0, 0, 0.38), 0 0 24px rgba(244, 199, 106, 0.56);
    background: rgba(5, 10, 22, 0.44);
    box-shadow: 0 18px 60px rgba(0, 0, 0, 0.36), inset 0 1px 0 rgba(255, 255, 255, 0.12);
    animation: duelEncounterTitle 1500ms cubic-bezier(.22,.86,.28,1) forwards;
}

@keyframes duelEncounterStage {
    0% { opacity: 0; transform: scale(1.08); }
    12% { opacity: 1; transform: scale(1.02); }
    68% { opacity: 1; transform: scale(1); }
    78% { transform: translate3d(-4px, 2px, 0) scale(1.01); }
    84% { transform: translate3d(4px, -2px, 0) scale(1.01); }
    100% { opacity: 0; transform: scale(1.18); }
}

@keyframes duelEncounterSpin {
    0% { opacity: 0; transform: rotate(0deg) scale(0.24); }
    16% { opacity: 1; }
    72% { opacity: 1; transform: rotate(540deg) scale(1); }
    100% { opacity: 0; transform: rotate(760deg) scale(1.4); }
}

@keyframes duelEncounterLines {
    0%, 12% { opacity: 0; transform: scaleX(0) rotate(0deg); }
    36% { opacity: 0.72; transform: scaleX(1) rotate(8deg); }
    72% { opacity: 0.5; transform: scaleX(1.3) rotate(-10deg); }
    100% { opacity: 0; transform: scaleX(1.8) rotate(-18deg); }
}

@keyframes duelEncounterRunePulse {
    0% { opacity: 0; transform: scale(0.6) rotate(0deg); }
    24% { opacity: 0.95; }
    74% { opacity: 0.85; transform: scale(1.08) rotate(34deg); }
    100% { opacity: 0; transform: scale(1.55) rotate(58deg); }
}

@keyframes duelEncounterFlash {
    0%, 38% { opacity: 0; transform: scale(0.8); }
    52% { opacity: 0.95; transform: scale(1.2); }
    64%, 100% { opacity: 0; transform: scale(1.8); }
}

@keyframes duelEncounterTitle {
    0% { opacity: 0; transform: translateY(24px) scale(0.9); }
    24% { opacity: 1; transform: translateY(0) scale(1); }
    68% { opacity: 1; transform: translateY(0) scale(1.04); }
    100% { opacity: 0; transform: translateY(-18px) scale(1.16); }
}

@media (prefers-reduced-motion: reduce) {
    .duel-encounter-transition.is-active {
        animation: duelEncounterReduced 900ms ease-in-out forwards;
    }

    .duel-encounter-vortex,
    .duel-encounter-runes,
    .duel-encounter-lines {
        display: none;
    }

    .duel-encounter-flash {
        animation: duelEncounterReducedFlash 900ms ease-in-out forwards;
    }

    .duel-encounter-title {
        animation: duelEncounterReducedTitle 900ms ease-in-out forwards;
    }
}

@keyframes duelEncounterReduced {
    0% { opacity: 0; }
    20%, 72% { opacity: 1; }
    100% { opacity: 0; }
}

@keyframes duelEncounterReducedFlash {
    0%, 44% { opacity: 0; }
    55% { opacity: 0.58; }
    100% { opacity: 0; }
}

@keyframes duelEncounterReducedTitle {
    0% { opacity: 0; transform: scale(0.98); }
    24%, 76% { opacity: 1; transform: scale(1); }
    100% { opacity: 0; transform: scale(1.02); }
}

/* Fase B: cierre del duelo y orientacion breve de turno/fase. */
.duel-outcome-transition,
.duel-turn-transition {
    position: fixed;
    pointer-events: none;
}

.duel-outcome-transition {
    --outcome-accent: #d1d5db;
    --outcome-soft: rgba(148, 163, 184, .28);
    inset: 0;
    z-index: 9997;
    display: grid;
    place-items: center;
    overflow: hidden;
    opacity: 0;
    color: #f8fafc;
}

.duel-outcome-transition.outcome-victory {
    --outcome-accent: #facc15;
    --outcome-soft: rgba(34, 197, 94, .34);
}

.duel-outcome-transition.outcome-defeat {
    --outcome-accent: #fca5a5;
    --outcome-soft: rgba(185, 28, 28, .32);
}

.duel-outcome-shade,
.duel-outcome-sweep {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.duel-outcome-shade {
    background: rgba(2, 6, 17, .76);
}

.duel-outcome-sweep {
    background:
        linear-gradient(115deg, transparent 34%, var(--outcome-soft) 48%, rgba(255, 255, 255, .34) 50%, var(--outcome-soft) 52%, transparent 66%);
    transform: translateX(-120%);
}

.duel-outcome-mark {
    position: relative;
    z-index: 2;
    width: min(82vw, 720px);
    padding: 24px 32px;
    border-top: 2px solid var(--outcome-accent);
    border-bottom: 2px solid var(--outcome-accent);
    text-align: center;
    color: #f8fafc;
    background: rgba(2, 6, 23, .72);
    box-shadow: 0 0 48px var(--outcome-soft);
}

.duel-outcome-mark span {
    display: block;
    font-size: 3rem;
    font-weight: 950;
    line-height: 1;
    letter-spacing: 0;
    text-shadow: 0 2px 18px var(--outcome-accent);
}

.duel-outcome-transition.is-active {
    animation: duelOutcomeStage var(--duel-visual-duration, 900ms) ease-out both;
}

.duel-outcome-transition.is-active .duel-outcome-sweep {
    animation: duelOutcomeSweep var(--duel-visual-duration, 900ms) ease-out both;
}

.duel-outcome-transition.is-active .duel-outcome-mark {
    animation: duelOutcomeMark var(--duel-visual-duration, 900ms) cubic-bezier(.2, .82, .28, 1) both;
}

.duel-turn-transition {
    --turn-accent: #facc15;
    top: 16%;
    left: 50%;
    z-index: 540;
    width: min(76vw, 560px);
    padding: 12px 24px;
    transform: translateX(-50%);
    overflow: hidden;
    border: 1px solid color-mix(in srgb, var(--turn-accent) 68%, transparent);
    border-radius: 4px;
    color: #f8fafc;
    background: rgba(2, 6, 23, .88);
    box-shadow: 0 14px 38px rgba(0, 0, 0, .36), 0 0 24px color-mix(in srgb, var(--turn-accent) 24%, transparent);
    opacity: 0;
    text-align: center;
}

.duel-turn-transition.player-2 {
    --turn-accent: #60a5fa;
}

.duel-turn-transition::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--turn-accent) 42%, transparent), transparent);
    transform: translateX(-110%);
}

.duel-turn-transition span {
    position: relative;
    z-index: 1;
    font-size: 1.35rem;
    font-weight: 950;
    line-height: 1.1;
    letter-spacing: 0;
}

.duel-turn-transition.is-active {
    animation: duelTurnStage var(--duel-visual-duration, 480ms) ease-out both;
}

.duel-turn-transition.is-active::before {
    animation: duelTurnSweep var(--duel-visual-duration, 480ms) ease-out both;
}

body.duel-playing .player-zone.duel-turn-zone-pulse {
    animation: duelTurnZonePulse var(--duel-visual-duration, 480ms) ease-out both;
}

body.duel-playing #phaseText.duel-phase-transition.is-active {
    position: relative;
    animation: duelPhasePulse var(--duel-visual-duration, 260ms) ease-out both;
}

body.duel-playing .board-main.duel-combat-resolution-pulse {
    animation: duelCombatResolutionPulse var(--duel-visual-duration, 280ms) ease-out both;
}

@keyframes duelOutcomeStage {
    0% { opacity: 0; }
    18%, 76% { opacity: 1; }
    100% { opacity: 0; }
}

@keyframes duelOutcomeSweep {
    0%, 12% { transform: translateX(-120%); opacity: 0; }
    46% { opacity: 1; }
    82%, 100% { transform: translateX(120%); opacity: 0; }
}

@keyframes duelOutcomeMark {
    0% { opacity: 0; transform: scale(.96); filter: brightness(.8); }
    24%, 72% { opacity: 1; transform: scale(1); filter: brightness(1.12); }
    100% { opacity: 0; transform: scale(1.02); filter: brightness(1); }
}

@keyframes duelTurnStage {
    0% { opacity: 0; transform: translate(-50%, -10px); }
    24%, 74% { opacity: 1; transform: translate(-50%, 0); }
    100% { opacity: 0; transform: translate(-50%, 8px); }
}

@keyframes duelTurnSweep {
    0%, 8% { transform: translateX(-110%); }
    82%, 100% { transform: translateX(110%); }
}

@keyframes duelTurnZonePulse {
    0%, 100% { filter: brightness(1); }
    48% { filter: brightness(1.16); }
}

@keyframes duelPhasePulse {
    0%, 100% { color: #fde68a; text-shadow: none; }
    48% { color: #fff7d6; text-shadow: 0 0 16px rgba(250, 204, 21, .82); }
}

@keyframes duelCombatResolutionPulse {
    0%, 100% { filter: brightness(1); }
    46% { filter: brightness(1.08) saturate(1.06); }
}

@media (max-width: 640px) {
    .duel-outcome-mark span { font-size: 2.1rem; }
    .duel-turn-transition { top: 220px; width: min(88vw, 560px); }
    .duel-turn-transition span { font-size: 1.05rem; }
}

@media (prefers-reduced-motion: reduce) {
    .duel-outcome-transition.is-active,
    .duel-turn-transition.is-active,
    body.duel-playing .player-zone.duel-turn-zone-pulse,
    body.duel-playing #phaseText.duel-phase-transition.is-active,
    body.duel-playing .board-main.duel-combat-resolution-pulse {
        animation: duelVisualReduced var(--duel-visual-duration, 120ms) linear both !important;
    }

    .duel-outcome-transition.is-active .duel-outcome-sweep,
    .duel-turn-transition.is-active::before {
        animation: none !important;
        display: none;
    }

    .duel-outcome-transition.is-active .duel-outcome-mark {
        animation: duelVisualContentReduced var(--duel-visual-duration, 120ms) linear both !important;
    }
}

@keyframes duelVisualReduced {
    0% { opacity: 0; }
    20%, 78% { opacity: 1; }
    100% { opacity: 0; }
}

@keyframes duelVisualContentReduced {
    0% { opacity: 0; }
    20%, 78% { opacity: 1; }
    100% { opacity: 0; }
}