// ===== demos/effects/slam-entrance-moves/ImpactBurstKit.tsx =====
// 落点冲击套件（impact-burst-kit）——shockwave-ring + particle-burst 组合变异。
// 主卡砸落的落点帧同时触发：冲击波环扩散 + 14 粒子放射迸发 + 震屏，
// 且冲击波前沿扫到左右邻卡的那一帧（按半径-距离算准=落点后 3f）邻卡被
// 向外推开再 spring 弹回——"波及邻居"即两条词汇焊接成立的证据。
// 关键帧：0–14 两侧卡驻场、主卡 scale1.8/y-120 悬停 → 14–20 主卡 6f 加速砸落 →
// 20 落点帧：环 80→900px(14f out-cubic, op .75→0) + 14 粒子飞散 160–340px(22f)
//   + 4f 震屏 6px 衰减 + 主卡 6f 压扁回弹 → 23 环前沿过邻卡(中心距 460px)：
//   邻卡外推 30px + rotate ±3° 阻尼振荡弹回(40f 内钳到 0) → 63–140 全静止(77f)。
import React from 'react';
import { useCurrentFrame, interpolate, Easing } from 'remotion';
import { G, Card, TitleBlock } from '../../_fixtures/Fixtures';

// 伪随机（帧确定）
const h = (n: number): number => {
  const s = Math.sin(n * 127.3) * 43758.5453;
  return s - Math.floor(s);
};

const CW = 400;
const CH = 280;
const GAP = 60;
const X_L = (1920 - (CW * 3 + GAP * 2)) / 2; // 300
const Y = (1080 - CH) / 2; // 400
const CX = 960; // 主卡中心
const CY = Y + CH / 2; // 540

const IMPACT = 20; // 落点帧
// 冲击波：80→900px 14f out-cubic。前沿到达邻卡中心距 460px 的帧：
// (460-80)/820=0.463 → 1-(1-p)^3 → p≈0.19 → t≈2.6f → 取落点后 3f = 帧 23
const HIT_NEIGHBOR = IMPACT + 3;

// 14 个粒子：方/圆混合，角度带向上偏置，飞散 160–340px 减速缩小消失
const PARTICLES = Array.from({ length: 14 }).map((_, i) => ({
  angle: -Math.PI / 2 + (h(i + 1) - 0.5) * Math.PI * 1.7, // 上半球为主
  dist: 160 + h(i + 40) * 180,
  size: 8 + h(i + 80) * 10,
  square: i % 2 === 0,
}));

// 邻卡被推开的阻尼振荡包络：t=0 瞬时到 1，之后余弦衰减弹回，40f 后钳 0 保真静止
const pushEnv = (f: number): number => {
  const t = f - HIT_NEIGHBOR;
  if (t < 0 || t >= 40) return 0;
  return Math.cos(t * 0.5) * Math.exp(-t / 8);
};

export const ImpactBurstKit: React.FC = () => {
  const frame = useCurrentFrame();

  // ── 主卡砸落：14–20 帧 scale 1.8→1 / y -120→0，加速进场
  const dropP = interpolate(frame, [14, IMPACT], [0, 1], {
    extrapolateLeft: 'clamp',
    extrapolateRight: 'clamp',
    easing: Easing.in(Easing.cubic),
  });
  const mainScale = interpolate(dropP, [0, 1], [1.8, 1]);
  const mainDy = interpolate(dropP, [0, 1], [-120, 0]);
  // 落点后 6f 压扁回弹（squash & stretch）
  const sq = interpolate(frame, [IMPACT, IMPACT + 3, IMPACT + 6], [0, 1, 0], {
    extrapolateLeft: 'clamp',
    extrapolateRight: 'clamp',
    easing: Easing.out(Easing.quad),
  });
  const mainSx = mainScale * (1 + 0.07 * sq);
  const mainSy = mainScale * (1 - 0.1 * sq);

  // ── ① 冲击波环：半径 80→900，14f，opacity 0.75→0
  const ringP = interpolate(frame, [IMPACT, IMPACT + 14], [0, 1], {
    extrapolateLeft: 'clamp',
    extrapolateRight: 'clamp',
    easing: Easing.out(Easing.cubic),
  });
  const ringR = interpolate(ringP, [0, 1], [80, 900]);
  const ringOp = frame >= IMPACT && frame < IMPACT + 14 ? 0.75 * (1 - ringP) : 0;

  // ── ② 粒子：落点起 22f，减速飞散 + 缩小 + 淡出
  const pT = interpolate(frame, [IMPACT, IMPACT + 22], [0, 1], {
    extrapolateLeft: 'clamp',
    extrapolateRight: 'clamp',
    easing: Easing.out(Easing.cubic),
  });
  const particlesAlive = frame >= IMPACT && frame < IMPACT + 22;

  // ── ③ 邻卡外推 30px + rotate ±3°，阻尼弹回
  const env = pushEnv(frame);
  const pushX = 30 * env;
  const pushRot = 3 * env;

  // ── ④ 震屏：落点起 4f，6px 衰减（h 伪随机方向，帧确定）
  let shakeX = 0;
  let shakeY = 0;
  if (frame >= IMPACT && frame < IMPACT + 4) {
    const amp = 6 * (1 - (frame - IMPACT) / 4);
    shakeX = (h(frame * 3.7) - 0.5) * 2 * amp;
    shakeY = (h(frame * 7.1 + 13) - 0.5) * 2 * amp;
  }

  return (
    <div style={{ width: 1920, height: 1080, background: G.bg, position: 'relative', overflow: 'hidden' }}>
      <div style={{ position: 'absolute', inset: 0, transform: `translate(${shakeX}px, ${shakeY}px)` }}>
        <div style={{ position: 'absolute', left: 120, top: 96 }}>
          <TitleBlock text="IMPACT BURST KIT" size={54} />
        </div>

        {/* 左邻卡：被冲击波推开再弹回 */}
        <div
          style={{
            position: 'absolute',
            left: X_L,
            top: Y,
            transform: `translateX(${-pushX}px) rotate(${-pushRot}deg)`,
          }}
        >
          <Card w={CW} h={CH} seed={2} />
        </div>

        {/* 右邻卡 */}
        <div
          style={{
            position: 'absolute',
            left: X_L + (CW + GAP) * 2,
            top: Y,
            transform: `translateX(${pushX}px) rotate(${pushRot}deg)`,
          }}
        >
          <Card w={CW} h={CH} seed={4} />
        </div>

        {/* 主卡：砸落 + 落点压扁回弹 */}
        <div
          style={{
            position: 'absolute',
            left: X_L + CW + GAP,
            top: Y + mainDy,
            transform: `scale(${mainSx}, ${mainSy})`,
            transformOrigin: '50% 100%',
          }}
        >
          <Card w={CW} h={CH} seed={7} style={{ boxShadow: '0 6px 18px rgba(0,0,0,0.16)' }} />
        </div>

        {/* ② 粒子迸发（画在卡之上） */}
        {particlesAlive &&
          PARTICLES.map((p, i) => {
            const px = CX + Math.cos(p.angle) * p.dist * pT;
            const py = CY + Math.sin(p.angle) * p.dist * pT;
            const s = p.size * (1 - pT);
            if (s < 0.5) return null;
            return (
              <div
                key={i}
                style={{
                  position: 'absolute',
                  left: px - s / 2,
                  top: py - s / 2,
                  width: s,
                  height: s,
                  background: G.ink,
                  borderRadius: p.square ? 2 : '50%',
                  opacity: 1 - pT * pT,
                }}
              />
            );
          })}

        {/* ① 冲击波环（最上层扫过邻卡） */}
        {ringOp > 0 && (
          <div
            style={{
              position: 'absolute',
              left: CX - ringR,
              top: CY - ringR,
              width: ringR * 2,
              height: ringR * 2,
              border: `3px solid ${G.ink}`,
              borderRadius: '50%',
              opacity: ringOp,
              boxSizing: 'border-box',
            }}
          />
        )}
      </div>
    </div>
  );
};


// ===== demos/effects/slam-entrance-moves/KanadaPerspectiveSnap.tsx =====
// 金田透视急停（kanada-perspective-snap）——金田伊功式夸张透视入场。
// 一张卡片以鱼眼级夸张透视姿态高速甩入画面中心：容器 perspective 300→1500px
// （短焦→长焦，透视畸变随之收敛），卡片 rotate3d(0.5,1,0.1) 58°→0 +
// scale 1.7→1 + translateX -700→0，近角冲出画面感。落定瞬间"啪"地弹平：
// rotateY 过冲 +5° 再 4f 回 0；同时 6px 震屏 2f 衰减，拉长斜影收为正常投影。
// 甩入期整卡叠 blur(2px) 增速感，落定即摘（保证收尾逐帧全同）。
// 关键帧：0–18 透视甩入（out cubic）→ 14–18 rotateY 过冲至 +5° →
// 18–22 回弹归 0 + 震屏衰减 + 阴影收正 → 22–130 全静止（≥45f）。
import React from 'react';
import { useCurrentFrame, interpolate, Easing } from 'remotion';
import { G, Card, TitleBlock } from '../../_fixtures/Fixtures';

// 确定性伪随机（震屏抖动用）
const h = (n: number): number => {
  const s = Math.sin(n * 127.3) * 43758.5453;
  return s - Math.floor(s);
};

const CLAMP = { extrapolateLeft: 'clamp', extrapolateRight: 'clamp' } as const;

const CARD_W = 520;
const CARD_H = 340;
const CX = (1920 - CARD_W) / 2; // 700
const CY = (1080 - CARD_H) / 2; // 370

export const KanadaPerspectiveSnap: React.FC = () => {
  const frame = useCurrentFrame();

  // 0–18f 甩入主通道（out cubic：先猛后缓，急停感）
  const p = interpolate(frame, [0, 18], [0, 1], { ...CLAMP, easing: Easing.out(Easing.cubic) });
  const persp = interpolate(p, [0, 1], [300, 1500]); // 短焦鱼眼→长焦收平
  const angle3d = interpolate(p, [0, 1], [58, 0]); // rotate3d(0.5,1,0.1)
  const scale = interpolate(p, [0, 1], [1.7, 1]);
  const tx = interpolate(p, [0, 1], [-700, 0]);

  // rotateY 过冲通道：14–18f 冲到 +5°，18–22f "啪"地回 0
  const rotY =
    frame < 18
      ? interpolate(frame, [14, 18], [0, 5], CLAMP)
      : interpolate(frame, [18, 22], [5, 0], { ...CLAMP, easing: Easing.out(Easing.cubic) });

  // 落定震屏：18f 起 6px，2f 内衰减到 0（21f 后恒为 0，保证真静止）
  const shakeAmp = frame >= 18 ? interpolate(frame, [18, 21], [6, 0], CLAMP) : 0;
  const shakeX = shakeAmp * (h(frame * 7 + 1) * 2 - 1);
  const shakeY = shakeAmp * (h(frame * 13 + 2) * 2 - 1);

  // 阴影：飞行期拉长斜影（大偏移大模糊）→ 落定收为正常投影（18–22f 收拢）
  const shOff = frame < 18 ? interpolate(p, [0, 1], [1, 0.35]) : interpolate(frame, [18, 22], [0.35, 0], { ...CLAMP, easing: Easing.out(Easing.quad) });
  const shX = interpolate(shOff, [0, 1], [0, 70]);
  const shY = interpolate(shOff, [0, 1], [8, 52]);
  const shBlur = interpolate(shOff, [0, 1], [14, 36]);
  const shAlpha = interpolate(shOff, [0, 1], [0.16, 0.3]);

  // 甩速 blur：透视扭曲期叠 2px，落定（18f）即摘，收尾无逐帧滤镜
  const blur = frame < 18 ? 2 : 0;

  return (
    <div style={{ width: 1920, height: 1080, background: G.bg, position: 'relative', overflow: 'hidden' }}>
      <div style={{ position: 'absolute', left: shakeX, top: shakeY, width: 1920, height: 1080 }}>
        <div style={{ position: 'absolute', left: 120, top: 96 }}>
          <TitleBlock text="KANADA PERSPECTIVE SNAP" size={54} />
        </div>
        {/* 落点槽位（虚线框，给"甩到哪"一个参照） */}
        <div
          style={{
            position: 'absolute',
            left: CX - 20,
            top: CY - 20,
            width: CARD_W + 40,
            height: CARD_H + 40,
            border: `3px dashed ${G.bar}`,
            borderRadius: 22,
            boxSizing: 'border-box',
          }}
        />
        {/* 透视容器：perspective 随落定从鱼眼收敛到长焦 */}
        <div style={{ position: 'absolute', left: CX, top: CY, perspective: `${persp}px`, perspectiveOrigin: '30% 50%' }}>
          <div
            style={{
              transform: `translateX(${tx}px) scale(${scale}) rotate3d(0.5, 1, 0.1, ${angle3d}deg) rotateY(${rotY}deg)`,
              transformOrigin: '20% 50%',
              filter: `drop-shadow(${shX}px ${shY}px ${shBlur}px rgba(0,0,0,${shAlpha}))${blur ? ` blur(${blur}px)` : ''}`,
            }}
          >
            <Card w={CARD_W} h={CARD_H} seed={3} />
          </div>
        </div>
      </div>
    </div>
  );
};


// ===== demos/effects/slam-entrance-moves/ScoreSlam.tsx =====
// 比分砸落入场（score-slam）——ESPN 比分弹窗 slam。
// KPI 卡从 scale 2.5 / rotate 5° / y-80 高空加速砸落屏心，落点帧同时触发
// 三件套：冲击波描边圆环扩散消散、8 个尘点小方块 seeded 抛物线飞散、
// 整画面震屏指数衰减。砸落带 3% 压缩过冲回弹落定。
// 关键帧：0–8 环境 hold → 8–14 砸落（Easing.in(quad)，scale 2.5→0.97，
// rotate 5→0，y -80→0）→ 14 落点帧触发环/尘/震 → 14–22 过冲回弹 0.97→1 →
// 14–28 圆环 60→720px 直径 op 0.7→0 → 14–30 尘点飞散 → 14–19 震屏 18px 衰减
// → 30–135 全静止（≥45f，无逐帧噪声层）。
import React from 'react';
import { useCurrentFrame, interpolate, Easing } from 'remotion';
import { G, FakeDashboard, TitleBlock } from '../../_fixtures/Fixtures';

// 库规伪随机
const h = (n: number) => {
  const s = Math.sin(n * 127.3) * 43758.5453;
  return s - Math.floor(s);
};

const IMPACT = 14; // 落点帧
const CX = 960;
const CY = 540;
const CARD_W = 460;
const CARD_H = 260;

export const ScoreSlam: React.FC = () => {
  const frame = useCurrentFrame();

  // —— 卡片砸落：8–14 加速下砸到 0.97（压缩过冲），14–22 回弹到 1 ——
  const slamScale =
    frame < IMPACT
      ? interpolate(frame, [8, IMPACT], [2.5, 0.97], {
          extrapolateLeft: 'clamp',
          extrapolateRight: 'clamp',
          easing: Easing.in(Easing.quad),
        })
      : interpolate(frame, [IMPACT, 22], [0.97, 1], {
          extrapolateLeft: 'clamp',
          extrapolateRight: 'clamp',
          easing: Easing.out(Easing.cubic),
        });
  const slamRot = interpolate(frame, [8, IMPACT], [5, 0], {
    extrapolateLeft: 'clamp',
    extrapolateRight: 'clamp',
    easing: Easing.in(Easing.quad),
  });
  const slamY = interpolate(frame, [8, IMPACT], [-80, 0], {
    extrapolateLeft: 'clamp',
    extrapolateRight: 'clamp',
    easing: Easing.in(Easing.quad),
  });
  const cardOp = interpolate(frame, [8, 11], [0, 1], {
    extrapolateLeft: 'clamp',
    extrapolateRight: 'clamp',
  });

  // —— 震屏：落点帧起 5f，18px 指数衰减，seeded 方向，19f 后严格归零 ——
  let shakeX = 0;
  let shakeY = 0;
  if (frame >= IMPACT && frame < IMPACT + 5) {
    const t = frame - IMPACT;
    const amp = 18 * Math.exp(-t * 0.9);
    shakeX = amp * (h(frame * 7 + 1) * 2 - 1);
    shakeY = amp * (h(frame * 13 + 2) * 2 - 1);
  }

  // —— 冲击波圆环：14f 内直径 60→720，opacity 0.7→0 ——
  const ringT = interpolate(frame, [IMPACT, IMPACT + 14], [0, 1], {
    extrapolateLeft: 'clamp',
    extrapolateRight: 'clamp',
    easing: Easing.out(Easing.cubic),
  });
  const ringD = interpolate(ringT, [0, 1], [60, 860]);
  // 不透明度走线性帧时间（与扩散的 out-cubic 解耦），扩到最大前都保持可见
  const ringTLin = interpolate(frame, [IMPACT, IMPACT + 14], [0, 1], {
    extrapolateLeft: 'clamp',
    extrapolateRight: 'clamp',
  });
  const ringOp = interpolate(ringTLin, [0, 0.65, 1], [0.75, 0.55, 0]);
  const ringOn = frame >= IMPACT && frame < IMPACT + 14;

  // —— 8 个尘点：seeded 角度抛物线飞散 120–260px，16f 减速缩小消失 ——
  const dustT = interpolate(frame, [IMPACT, IMPACT + 16], [0, 1], {
    extrapolateLeft: 'clamp',
    extrapolateRight: 'clamp',
    easing: Easing.out(Easing.cubic),
  });
  const dustTLin = interpolate(frame, [IMPACT, IMPACT + 16], [0, 1], {
    extrapolateLeft: 'clamp',
    extrapolateRight: 'clamp',
  });
  const dustOn = frame >= IMPACT && frame < IMPACT + 16;

  return (
    <div
      style={{
        width: 1920,
        height: 1080,
        background: G.bg,
        position: 'relative',
        overflow: 'hidden',
      }}
    >
      {/* 震屏容器：整画面一起抖 */}
      <div
        style={{
          position: 'absolute',
          inset: 0,
          transform: `translate(${shakeX}px, ${shakeY}px)`,
        }}
      >
        {/* 虚化 dashboard 环境底 */}
        <div
          style={{
            position: 'absolute',
            left: 0,
            top: 0,
            filter: 'blur(6px)',
            transform: 'scale(1.05)',
            transformOrigin: '50% 50%',
          }}
        >
          <FakeDashboard variant="B" />
        </div>

        <div style={{ position: 'absolute', left: 120, top: 96 }}>
          <TitleBlock text="SCORE SLAM" size={54} />
        </div>

        {/* ② 尘点飞散 */}
        {dustOn &&
          Array.from({ length: 8 }).map((_, i) => {
            const ang = (i / 8) * Math.PI * 2 + (h(i + 3) - 0.5) * 0.7;
            const dist = 160 + h(i + 11) * 160; // 160–320px
            const size = 18 + h(i + 23) * 12; // 18–30px
            const dx = Math.cos(ang) * dist * dustT;
            // 抛物线：先随角度飞出，再叠加重力下坠
            const dy = Math.sin(ang) * dist * dustT + 90 * dustT * dustT;
            const s = size * (1 - 0.75 * dustTLin);
            const op = interpolate(dustTLin, [0, 0.75, 1], [0.9, 0.7, 0]);
            return (
              <div
                key={i}
                style={{
                  position: 'absolute',
                  left: CX + dx - s / 2,
                  top: CY + CARD_H / 2 - 20 + dy - s / 2,
                  width: s,
                  height: s,
                  background: G.ink,
                  opacity: op,
                  borderRadius: 2,
                }}
              />
            );
          })}

        {/* ① 冲击波圆环 */}
        {ringOn && (
          <div
            style={{
              position: 'absolute',
              left: CX - ringD / 2,
              top: CY - ringD / 2,
              width: ringD,
              height: ringD,
              borderRadius: '50%',
              border: `6px solid ${G.ink}`,
              opacity: ringOp,
              boxSizing: 'border-box',
            }}
          />
        )}

        {/* KPI 卡本体 */}
        {frame >= 8 && (
          <div
            style={{
              position: 'absolute',
              left: CX - CARD_W / 2,
              top: CY - CARD_H / 2,
              width: CARD_W,
              height: CARD_H,
              background: G.card,
              border: `3px solid ${G.border}`,
              borderRadius: 18,
              boxShadow: '0 10px 30px rgba(0,0,0,0.18)',
              display: 'flex',
              flexDirection: 'column',
              alignItems: 'center',
              justifyContent: 'center',
              gap: 8,
              opacity: cardOp,
              transform: `translateY(${slamY}px) rotate(${slamRot}deg) scale(${slamScale})`,
              transformOrigin: '50% 50%',
            }}
          >
            <div
              style={{
                fontFamily: 'Helvetica, Arial, sans-serif',
                fontWeight: 800,
                fontSize: 110,
                color: G.ink,
                letterSpacing: -3,
                lineHeight: 1,
              }}
            >
              +247%
            </div>
            <div
              style={{
                fontFamily: 'Helvetica, Arial, sans-serif',
                fontWeight: 600,
                fontSize: 26,
                color: G.mid,
                letterSpacing: 4,
              }}
            >
              QUARTERLY GROWTH
            </div>
          </div>
        )}
      </div>
    </div>
  );
};