/* ============================================
   TRUCO GAME - ANIMATION SYSTEM
   Flash-style professional polish
   ============================================ */

/* ============================================
   CSS VARIABLES FOR ANIMATION TIMING
   ============================================ */
:root {
    --anim-card-deal: 400ms;
    --anim-card-flip: 300ms;
    --anim-card-play: 350ms;
    --anim-call-reveal: 600ms;
    --anim-score: 500ms;
    --anim-ripple: 600ms;
    --ease-bounce: cubic-bezier(0.175, 0.885, 0.32, 1.275);
    --ease-smooth: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ============================================
   CARD DEALING ANIMATION
   Cascade from deck position
   ============================================ */
@keyframes cardDeal {
    0% {
        transform: translate(-50%, -300%) rotate(-15deg) scale(0.5);
        opacity: 0;
    }
    50% {
        transform: translate(0, -40px) rotate(8deg) scale(1.08);
        opacity: 1;
    }
    75% {
        transform: translate(0, 5px) rotate(-3deg) scale(0.98);
    }
    100% {
        transform: translate(0, 0) rotate(0) scale(1);
    }
}

.card-dealing {
    animation: cardDeal var(--anim-card-deal) var(--ease-bounce) both;
}

/* ============================================
   3D CARD FLIP ANIMATION
   Perspective-based flip for reveals
   ============================================ */
@keyframes cardFlip {
    0% {
        transform: perspective(1000px) rotateY(180deg) scale(0.8);
    }
    50% {
        transform: perspective(1000px) rotateY(90deg) scale(0.9);
    }
    100% {
        transform: perspective(1000px) rotateY(0deg) scale(1);
    }
}

.card-flipping {
    animation: cardFlip var(--anim-card-flip) ease-out both;
    transform-style: preserve-3d;
}

/* ============================================
   CARD PLAY ARC ANIMATION
   Smooth arc from hand to table
   ============================================ */
@keyframes cardPlayArc {
    0% {
        transform: translateY(0) translateX(0) scale(1) rotate(0deg);
        z-index: 100;
    }
    35% {
        transform: translateY(-100px) translateX(calc(var(--target-x, 0px) * 0.3)) scale(1.2) rotate(-8deg);
        z-index: 100;
    }
    70% {
        transform: translateY(calc(var(--target-y, 0px) * 0.8)) translateX(calc(var(--target-x, 0px) * 0.9)) scale(0.85) rotate(3deg);
        z-index: 100;
    }
    100% {
        transform: translateY(var(--target-y, 0px)) translateX(var(--target-x, 0px)) scale(0.77) rotate(0deg);
        z-index: 1;
    }
}

.card-playing {
    animation: cardPlayArc var(--anim-card-play) var(--ease-smooth) both;
    pointer-events: none;
}

/* ============================================
   ENHANCED CARD SLAM (replacing original)
   More dramatic bounce
   ============================================ */
@keyframes cardSlamEnhanced {
    0% {
        transform: translateY(-150px) scale(1.3) rotate(-10deg);
        opacity: 0;
    }
    40% {
        transform: translateY(8px) scale(0.95) rotate(2deg);
        opacity: 1;
    }
    60% {
        transform: translateY(-5px) scale(1.02) rotate(-1deg);
    }
    80% {
        transform: translateY(2px) scale(0.99);
    }
    100% {
        transform: translateY(0) scale(1) rotate(0);
    }
}

.card-slam {
    animation: cardSlamEnhanced 0.4s var(--ease-bounce) both;
}

/* ============================================
   GLOW PULSE ANIMATION
   For interactive elements
   ============================================ */
@keyframes glowPulse {
    0%, 100% {
        box-shadow: 0 0 5px var(--glow-color, var(--rust, #2bb8cd));
    }
    50% {
        box-shadow:
            0 0 15px var(--glow-color, var(--rust, #2bb8cd)),
            0 0 30px var(--glow-color, var(--rust, #2bb8cd));
    }
}

.glow-pulse {
    animation: glowPulse 2s ease-in-out infinite;
}

/* ============================================
   CALL REVEAL ANIMATION
   Dramatic TRUCO!/ENVIDO! display
   ============================================ */
@keyframes callReveal {
    0% {
        transform: scale(0) rotate(-25deg);
        opacity: 0;
        filter: blur(20px);
    }
    50% {
        transform: scale(1.4) rotate(5deg);
        opacity: 1;
        filter: blur(0);
    }
    70% {
        transform: scale(0.9) rotate(-2deg);
    }
    100% {
        transform: scale(1) rotate(0);
    }
}

@keyframes callRevealOut {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    100% {
        transform: scale(1.5);
        opacity: 0;
        filter: blur(10px);
    }
}

.call-overlay {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0);
    z-index: 10000;
    pointer-events: none;
    transition: background 0.3s ease;
}

.call-overlay.show {
    background: rgba(0, 0, 0, 0.75);
}

.call-text {
    font-family: 'Trevor', 'Impact', sans-serif;
    font-size: clamp(3rem, 18vw, 7rem);
    font-weight: 900;
    letter-spacing: 8px;
    text-transform: uppercase;
    text-shadow:
        4px 4px 0 rgba(0, 0, 0, 0.9),
        0 0 60px currentColor,
        0 0 100px currentColor;
    animation: callReveal var(--anim-call-reveal) var(--ease-bounce);
}

.call-overlay.hide .call-text {
    animation: callRevealOut 0.3s ease-out forwards;
}

/* Call type colors */
.call-text.truco { color: #2bb8cd; }
.call-text.retruco { color: #1e90ff; }
.call-text.vale-cuatro { color: #9b59b6; }
.call-text.envido { color: #c9a227; }
.call-text.real-envido { color: #f39c12; }
.call-text.falta-envido { color: #e74c3c; }
.call-text.quiero { color: #2ecc71; }
.call-text.no-quiero { color: #e74c3c; }

/* ============================================
   THINKING DOTS ANIMATION
   CPU is processing
   ============================================ */
@keyframes thinkingDot {
    0%, 80%, 100% {
        transform: scale(0);
        opacity: 0.3;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

.thinking-dots {
    display: inline-flex;
    gap: 4px;
    margin-left: 8px;
    vertical-align: middle;
}

.thinking-dots span {
    display: inline-block;
    width: 8px;
    height: 8px;
    background: var(--rust, #2bb8cd);
    border-radius: 50%;
    animation: thinkingDot 1.4s ease-in-out infinite both;
}

.thinking-dots span:nth-child(1) { animation-delay: -0.32s; }
.thinking-dots span:nth-child(2) { animation-delay: -0.16s; }
.thinking-dots span:nth-child(3) { animation-delay: 0s; }

/* ============================================
   SCORE COUNTER ANIMATIONS
   ============================================ */
@keyframes scoreIncrease {
    0% { transform: scale(1); }
    30% { transform: scale(1.6); color: var(--green, #2ecc71); }
    100% { transform: scale(1); }
}

@keyframes scoreDecrease {
    0% { transform: scale(1); }
    30% { transform: scale(0.7); color: var(--red, #e74c3c); }
    60% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

.score-increasing {
    animation: scoreIncrease var(--anim-score) var(--ease-bounce);
}

.score-decreasing {
    animation: scoreDecrease var(--anim-score) var(--ease-bounce);
}

/* ============================================
   VICTORY CELEBRATION
   ============================================ */
@keyframes victoryBurst {
    0% {
        transform: scale(0) rotate(-180deg);
        opacity: 0;
    }
    60% {
        transform: scale(1.3) rotate(15deg);
        opacity: 1;
    }
    80% {
        transform: scale(0.9) rotate(-5deg);
    }
    100% {
        transform: scale(1) rotate(0);
        opacity: 1;
    }
}

@keyframes victoryFlash {
    0%, 100% {
        filter: brightness(1);
    }
    25% {
        filter: brightness(1.6) saturate(1.3);
    }
    50% {
        filter: brightness(1.2);
    }
    75% {
        filter: brightness(1.4) saturate(1.2);
    }
}

.victory-celebration {
    animation: victoryBurst 0.8s var(--ease-bounce);
}

.victory-flash {
    animation: victoryFlash 0.6s ease;
}

/* ============================================
   DEFEAT SHAKE
   ============================================ */
@keyframes defeatShake {
    0%, 100% { transform: translateX(0); }
    10% { transform: translateX(-12px) rotate(-1deg); }
    20% { transform: translateX(10px) rotate(1deg); }
    30% { transform: translateX(-8px) rotate(-0.5deg); }
    40% { transform: translateX(8px) rotate(0.5deg); }
    50% { transform: translateX(-5px); }
    60% { transform: translateX(5px); }
    70% { transform: translateX(-3px); }
    80% { transform: translateX(3px); }
    90% { transform: translateX(-1px); }
}

.defeat-shake {
    animation: defeatShake 0.6s ease;
}

/* ============================================
   BUTTON RIPPLE EFFECT
   ============================================ */
@keyframes ripple {
    0% {
        transform: translate(-50%, -50%) scale(0);
        opacity: 0.7;
    }
    100% {
        transform: translate(-50%, -50%) scale(4);
        opacity: 0;
    }
}

.btn-ripple {
    position: relative;
    overflow: hidden;
}

.ripple-effect {
    position: absolute;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    animation: ripple var(--anim-ripple) linear;
    pointer-events: none;
}

/* ============================================
   BUTTON SHINE EFFECT
   ============================================ */
@keyframes buttonShine {
    0% { transform: translateX(-150%) skewX(-15deg); }
    100% { transform: translateX(250%) skewX(-15deg); }
}

.btn-shine::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 50%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.15),
        transparent
    );
    animation: buttonShine 4s infinite;
    pointer-events: none;
}

/* ============================================
   CARD HOVER ENHANCEMENTS
   Tilt + glow + depth
   ============================================ */
.card-interactive {
    transition:
        transform 0.2s var(--ease-bounce),
        box-shadow 0.2s ease;
    transform-style: preserve-3d;
    cursor: pointer;
}

.card-interactive:hover {
    box-shadow:
        0 0 20px rgba(43, 184, 205, 0.4),
        4px 8px 16px rgba(0, 0, 0, 0.4),
        8px 16px 32px rgba(0, 0, 0, 0.2);
}

/* Glow overlay on hover */
.card-interactive::after {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: 10px;
    background: linear-gradient(
        135deg,
        transparent 30%,
        rgba(43, 184, 205, 0.15) 50%,
        rgba(43, 184, 205, 0.25) 70%,
        transparent 100%
    );
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.card-interactive:hover::after {
    opacity: 1;
}

/* ============================================
   OPPONENT REACTIONS
   ============================================ */
@keyframes angryGlow {
    0%, 100% {
        box-shadow: 0 0 10px rgba(231, 76, 60, 0.3);
    }
    50% {
        box-shadow: 0 0 30px rgba(231, 76, 60, 0.7);
    }
}

@keyframes happyBounce {
    0%, 100% { transform: translateY(0); }
    20% { transform: translateY(-8px); }
    40% { transform: translateY(0); }
    60% { transform: translateY(-4px); }
    80% { transform: translateY(0); }
}

@keyframes thinkingPulse {
    0%, 100% {
        filter: brightness(1);
        transform: scale(1);
    }
    50% {
        filter: brightness(0.7);
        transform: scale(0.98);
    }
}

.opponent-angry {
    animation: defeatShake 0.4s ease, angryGlow 1.5s ease infinite;
    border-color: var(--red, #e74c3c) !important;
}

.opponent-happy {
    animation: happyBounce 0.6s var(--ease-bounce);
    border-color: var(--green, #2ecc71) !important;
}

.opponent-thinking {
    animation: thinkingPulse 2s ease-in-out infinite;
}

/* ============================================
   ROUND BADGE ANIMATIONS
   ============================================ */
@keyframes badgePop {
    0% {
        transform: scale(0) rotate(-45deg);
        opacity: 0;
    }
    60% {
        transform: scale(1.3) rotate(10deg);
        opacity: 1;
    }
    100% {
        transform: scale(1) rotate(0);
    }
}

.badge-pop {
    animation: badgePop 0.4s var(--ease-bounce) both;
}

/* ============================================
   ROUND ROW TRANSITIONS
   ============================================ */
.round-row-animated {
    transition:
        opacity 0.4s ease,
        transform 0.4s ease,
        filter 0.4s ease;
}

.round-row-animated.active {
    opacity: 1;
    transform: scale(1);
    filter: brightness(1);
}

.round-row-animated.inactive {
    opacity: 0.3;
    transform: scale(0.96);
    filter: brightness(0.8);
}

.round-row-animated.completed {
    opacity: 0.6;
    transform: scale(0.98);
}

/* ============================================
   LOADING SCREEN
   ============================================ */
@keyframes spinLoader {
    to { transform: rotate(360deg); }
}

@keyframes loadingPulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

.loading-screen {
    position: fixed;
    inset: 0;
    background: var(--bg, #0d2233);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 24px;
    z-index: 99999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(43, 184, 205, 0.2);
    border-top-color: var(--rust, #2bb8cd);
    border-radius: 50%;
    animation: spinLoader 1s linear infinite;
}

.loading-text {
    font-family: 'Trevor', sans-serif;
    font-size: 1.2rem;
    letter-spacing: 6px;
    color: var(--rust, #2bb8cd);
    animation: loadingPulse 1.5s ease-in-out infinite;
}

/* ============================================
   SPEECH BUBBLE ANIMATION
   ============================================ */
@keyframes speechPop {
    0% {
        transform: scale(0) translateX(-30px);
        opacity: 0;
    }
    60% {
        transform: scale(1.1) translateX(5px);
    }
    100% {
        transform: scale(1) translateX(0);
        opacity: 1;
    }
}

.speech-bubble-animated {
    animation: speechPop 0.35s var(--ease-bounce) both;
}

/* ============================================
   ENVIDO REVEAL ANIMATION
   ============================================ */
@keyframes envidoCountUp {
    0% {
        transform: scale(0.5);
        opacity: 0;
    }
    50% {
        transform: scale(1.3);
        opacity: 1;
    }
    100% {
        transform: scale(1);
    }
}

.envido-reveal {
    animation: envidoCountUp 0.5s var(--ease-bounce) both;
}

/* ============================================
   PERFORMANCE OPTIMIZATIONS
   ============================================ */
.will-animate {
    will-change: transform, opacity;
    contain: layout style;
}

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

    .glow-pulse,
    .thinking-dots span,
    .btn-shine::before {
        animation: none !important;
    }
}

/* ============================================
   AUDIO CONTROLS UI
   ============================================ */
.audio-controls {
    display: flex;
    align-items: center;
    gap: 10px;
}

.btn-audio {
    background: transparent;
    border: none;
    font-size: 1.4rem;
    cursor: pointer;
    padding: 6px;
    opacity: 0.7;
    transition: opacity 0.2s, transform 0.2s;
    line-height: 1;
}

.btn-audio:hover {
    opacity: 1;
    transform: scale(1.1);
}

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

.btn-audio .icon-muted {
    display: none;
}

.btn-audio.muted .icon-sound {
    display: none;
}

.btn-audio.muted .icon-muted {
    display: inline;
}

.volume-slider {
    width: 70px;
    height: 6px;
    -webkit-appearance: none;
    appearance: none;
    background: rgba(43, 184, 205, 0.25);
    border-radius: 3px;
    cursor: pointer;
}

.volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--rust, #2bb8cd);
    cursor: pointer;
    transition: transform 0.15s ease;
}

.volume-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.volume-slider::-moz-range-thumb {
    width: 14px;
    height: 14px;
    border: none;
    border-radius: 50%;
    background: var(--rust, #2bb8cd);
    cursor: pointer;
}

/* ============================================
   ACCESSIBILITY: FOCUS STATES
   WCAG 2.1 AA Compliant
   ============================================ */
button:focus-visible,
a:focus-visible,
[role="button"]:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
.btn-game:focus-visible,
.btn-tut:focus-visible,
.card.playable:focus-visible {
    outline: 3px solid var(--rust, #2bb8cd);
    outline-offset: 3px;
    box-shadow: 0 0 0 6px rgba(43, 184, 205, 0.25);
}

/* Focus for interactive cards */
.card.playable:focus-visible {
    transform: translateY(-15px) scale(1.05);
    border-color: var(--rust, #2bb8cd);
    box-shadow:
        0 0 0 4px rgba(43, 184, 205, 0.3),
        0 15px 35px rgba(0,0,0,0.5);
}

/* Focus for FAQ items */
.faq-item:focus-visible {
    outline: 3px solid var(--rust, #2bb8cd);
    outline-offset: 2px;
    transform: rotate(0deg) translateX(6px);
    box-shadow: 8px 8px 0 var(--rust, #2bb8cd);
}

/* Focus for modal close buttons */
.modal-close:focus-visible {
    outline: 2px solid var(--rust, #2bb8cd);
    outline-offset: 2px;
    background: rgba(43, 184, 205, 0.1);
}

/* Focus for nav links */
.nav-links a:focus-visible,
.back-link:focus-visible,
.tut-back:focus-visible {
    outline: 2px solid var(--rust, #2bb8cd);
    outline-offset: 4px;
}

/* Skip link for keyboard navigation */
.skip-link {
    position: absolute;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--rust, #2bb8cd);
    color: var(--bg, #0a0a0a);
    padding: 12px 24px;
    font-family: 'Trevor', sans-serif;
    letter-spacing: 2px;
    z-index: 10000;
    border-radius: 0 0 8px 8px;
    transition: top 0.3s ease;
}

.skip-link:focus {
    top: 0;
}

/* ============================================
   CARD BACK DESIGN
   For flip animations
   ============================================ */
.card-back {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(135deg, #1a3a4a 0%, #0d2233 50%, #1a3a4a 100%);
    border-radius: 7px;
    transform: rotateY(180deg);
    backface-visibility: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-back::before {
    content: '';
    width: 70%;
    height: 80%;
    border: 2px solid rgba(43, 184, 205, 0.3);
    border-radius: 5px;
    background:
        repeating-linear-gradient(
            45deg,
            transparent,
            transparent 5px,
            rgba(43, 184, 205, 0.05) 5px,
            rgba(43, 184, 205, 0.05) 10px
        );
}