feat(audio,site): calm santoor default music + card-fan logo site redesign

- audio: default background music is now the santoor track (calm Persian),
  rebuilt as a real plucked-santoor loop — fast metallic attack, shimmer
  overtones, soft tonic drone, longer Dastgah-e-Shur phrase
- site: marketing logo is now the app's card-fan icon (Logo.tsx + icon.svg);
  hero features the big logo with gold halo, floating suit motifs, and
  polished section dividers

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

site/app/globals.css

@@ -78,3 +78,37 @@ body {
     linear-gradient(-45deg, rgba(212, 175, 55, 0.04) 25%, transparent 25%);
   background-size: 22px 22px;
 }
+
+/* Gentle float for the hero logo. */
+@keyframes float-y {
+  0%, 100% { transform: translateY(0); }
+  50% { transform: translateY(-12px); }
+}
+.float-y {
+  animation: float-y 5.5s ease-in-out infinite;
+}
+
+/* Soft gold halo behind the hero logo. */
+.gold-halo {
+  background: radial-gradient(circle, rgba(212, 175, 55, 0.28), transparent 62%);
+  filter: blur(8px);
+}
+
+/* Card-suit accent for hero/section glyphs. */
+.suit {
+  color: var(--gold);
+  opacity: 0.16;
+  user-select: none;
+  line-height: 1;
+}
+
+/* Thin gold hairline divider. */
+.rule-gold {
+  height: 1px;
+  background: linear-gradient(90deg, transparent, rgba(212, 175, 55, 0.5), transparent);
+}
+
+@media (prefers-reduced-motion: reduce) {
+  .float-y { animation: none; }
+  html { scroll-behavior: auto; }
+}

site/app/page.tsx

@@ -2,6 +2,7 @@ import {
   Users, Bot, Trophy, Gift, MessageCircle, Globe, ShieldCheck, Zap, Crown, Star,
 } from "lucide-react";
 import { DownloadButtons } from "@/components/DownloadButtons";
+import { Logo } from "@/components/Logo";
 import { BRAND } from "@/lib/site";
 
 const FEATURES = [
@@ -29,8 +30,22 @@ export default function Home() {
   return (
     <>
       {/* Hero */}
-      <section className="felt card-pattern">
+      <section className="felt card-pattern relative overflow-hidden">
+        {/* decorative card suits floating in the backdrop */}
+        <span className="suit pointer-events-none absolute right-[6%] top-16 text-8xl">♠</span>
+        <span className="suit pointer-events-none absolute left-[8%] top-40 text-7xl">♥</span>
+        <span className="suit pointer-events-none absolute left-[14%] bottom-12 text-6xl">♦</span>
+        <span className="suit pointer-events-none absolute right-[12%] bottom-20 text-7xl">♣</span>
+
         <div className="mx-auto max-w-6xl px-4 py-16 text-center sm:py-24">
+          {/* card-fan brand mark */}
+          <div className="relative mx-auto mb-8 grid h-40 w-40 place-items-center sm:h-48 sm:w-48">
+            <div className="gold-halo absolute inset-0 rounded-full" />
+            <div className="float-y relative">
+              <Logo size={160} glow />
+            </div>
+          </div>
+
           <span className="inline-flex items-center gap-1.5 rounded-full glass px-3 py-1 text-xs text-gold-soft">
             <Star size={13} /> بازی حکمِ ایرانی، حرفه‌ای‌تر از همیشه
           </span>
@@ -48,7 +63,7 @@ export default function Home() {
 
           <div className="mx-auto mt-12 grid max-w-3xl gap-3 sm:grid-cols-3">
             {STATS.map((s) => (
-              <div key={s.label} className="glass rounded-2xl px-4 py-4">
+              <div key={s.label} className="glass rounded-2xl px-4 py-4 transition hover:border-gold/40">
                 <s.icon className="mx-auto text-teal" size={22} />
                 <div className="mt-2 text-sm font-bold text-cream">{s.label}</div>
                 <div className="text-xs text-cream/55">{s.value}</div>
@@ -66,6 +81,7 @@ export default function Home() {
         <p className="mx-auto mt-3 max-w-xl text-center text-cream/60">
           همهٔ چیزی که یک بازی حکم بی‌نقص لازم دارد، در یک اپ.
         </p>
+        <div className="rule-gold mx-auto mt-6 max-w-xs" />
         <div className="mt-10 grid gap-5 sm:grid-cols-2 lg:grid-cols-3">
           {FEATURES.map((f) => (
             <div key={f.title} className="glass rounded-2xl p-6 transition hover:border-gold/40">
@@ -97,6 +113,9 @@ export default function Home() {
 
       {/* Final CTA */}
       <section className="mx-auto max-w-4xl px-4 py-16 text-center">
+        <div className="mx-auto mb-6 w-fit">
+          <Logo size={64} glow />
+        </div>
         <h2 className="text-3xl font-black sm:text-4xl">
           همین حالا <span className="gold-text">حکم</span> را شروع کن
         </h2>

site/components/Logo.tsx

@@ -1,24 +1,67 @@
-export function Logo({ size = 36 }: { size?: number }) {
+/**
+ * Brand mark — the app's card-fan icon (mirrors public/icon.svg): three gold-edged
+ * playing cards fanned out, a spade on the face card. Scales cleanly from the nav
+ * (≈34px) to the hero (≈160px). `glow` adds a soft gold halo for hero use.
+ */
+export function Logo({ size = 36, glow = false }: { size?: number; glow?: boolean }) {
   return (
-    <svg width={size} height={size} viewBox="0 0 100 100" fill="none" aria-hidden>
+    <svg
-      <rect x="6" y="6" width="88" height="88" rx="22" fill="url(#lg)" stroke="#d4af37" strokeWidth="3" />
+      width={size}
-      <text
+      height={size}
-        x="50"
+      viewBox="0 0 512 512"
-        y="62"
+      fill="none"
-        textAnchor="middle"
+      xmlns="http://www.w3.org/2000/svg"
-        fontSize="46"
+      aria-hidden
-        fontWeight="900"
+      style={glow ? { filter: "drop-shadow(0 10px 36px rgba(212,175,55,0.35))" } : undefined}
-        fill="#d4af37"
+    >
-        fontFamily="Vazirmatn Variable, sans-serif"
-      >
-        و
-      </text>
       <defs>
-        <linearGradient id="lg" x1="0" y1="0" x2="100" y2="100" gradientUnits="userSpaceOnUse">
+        <radialGradient id="frbg" cx="50%" cy="36%" r="78%">
-          <stop stopColor="#111a33" />
+          <stop offset="0" stopColor="#16284f" />
-          <stop offset="1" stopColor="#070b18" />
+          <stop offset="0.62" stopColor="#0a142e" />
+          <stop offset="1" stopColor="#060c1f" />
+        </radialGradient>
+        <linearGradient id="frgold" x1="0" y1="0" x2="0" y2="1">
+          <stop offset="0" stopColor="#f6e4a0" />
+          <stop offset="0.5" stopColor="#d4af37" />
+          <stop offset="1" stopColor="#b8860b" />
+        </linearGradient>
+        <linearGradient id="frface" x1="0" y1="0" x2="0" y2="1">
+          <stop offset="0" stopColor="#fffdf7" />
+          <stop offset="1" stopColor="#f1e6cd" />
+        </linearGradient>
+        <linearGradient id="frnavy" x1="0" y1="0" x2="0" y2="1">
+          <stop offset="0" stopColor="#1d356a" />
+          <stop offset="1" stopColor="#0a142e" />
         </linearGradient>
       </defs>
+
+      <rect width="512" height="512" rx="116" fill="url(#frbg)" />
+      <circle cx="256" cy="196" r="185" fill="#2dd4bf" opacity="0.07" />
+      <rect x="30" y="30" width="452" height="452" rx="100" fill="none" stroke="url(#frgold)" strokeWidth="6" opacity="0.6" />
+
+      <g transform="rotate(-25 256 396)">
+        <rect x="182" y="180" width="148" height="210" rx="16" fill="url(#frnavy)" stroke="url(#frgold)" strokeWidth="4" />
+        <rect x="198" y="196" width="116" height="178" rx="10" fill="none" stroke="#d4af37" strokeWidth="2" opacity="0.45" />
+        <path d="M256 250 l16 35 -16 35 -16 -35 z" fill="#d4af37" opacity="0.75" />
+      </g>
+      <g transform="rotate(25 256 396)">
+        <rect x="182" y="180" width="148" height="210" rx="16" fill="url(#frnavy)" stroke="url(#frgold)" strokeWidth="4" />
+        <rect x="198" y="196" width="116" height="178" rx="10" fill="none" stroke="#d4af37" strokeWidth="2" opacity="0.45" />
+        <path d="M256 250 l16 35 -16 35 -16 -35 z" fill="#d4af37" opacity="0.75" />
+      </g>
+
+      <g transform="translate(0 -24)">
+        <rect x="181" y="178" width="150" height="212" rx="16" fill="url(#frface)" stroke="url(#frgold)" strokeWidth="5" />
+        <rect x="193" y="190" width="126" height="188" rx="10" fill="none" stroke="#d4af37" strokeWidth="2" />
+        <g transform="translate(256 268) scale(1.45)">
+          <path
+            d="M0,-44 C0,-44 -42,-6 -42,16 C-42,30 -31,40 -18,40 C-11,40 -5,37 0,32 C-2,44 -10,52 -20,55 L20,55 C10,52 2,44 0,32 C5,37 11,40 18,40 C31,40 42,30 42,16 C42,-6 0,-44 0,-44 Z"
+            fill="url(#frgold)"
+            stroke="#7a5a00"
+            strokeWidth="1.5"
+          />
+        </g>
+      </g>
     </svg>
   );
 }

site/public/icon.svg

@@ -1,4 +1,45 @@
-<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100">
+<svg width="512" height="512" viewBox="0 0 512 512" xmlns="http://www.w3.org/2000/svg">
-  <rect x="6" y="6" width="88" height="88" rx="22" fill="#0b1226" stroke="#d4af37" stroke-width="4"/>
+  <defs>
-  <text x="50" y="64" text-anchor="middle" font-size="48" font-weight="900" fill="#d4af37" font-family="Tahoma, sans-serif">و</text>
+    <radialGradient id="bg" cx="50%" cy="36%" r="78%">
+      <stop offset="0" stop-color="#16284f"/>
+      <stop offset="0.62" stop-color="#0a142e"/>
+      <stop offset="1" stop-color="#060c1f"/>
+    </radialGradient>
+    <linearGradient id="gold" x1="0" y1="0" x2="0" y2="1">
+      <stop offset="0" stop-color="#f6e4a0"/>
+      <stop offset="0.5" stop-color="#d4af37"/>
+      <stop offset="1" stop-color="#b8860b"/>
+    </linearGradient>
+    <linearGradient id="face" x1="0" y1="0" x2="0" y2="1">
+      <stop offset="0" stop-color="#fffdf7"/>
+      <stop offset="1" stop-color="#f1e6cd"/>
+    </linearGradient>
+    <linearGradient id="navy" x1="0" y1="0" x2="0" y2="1">
+      <stop offset="0" stop-color="#1d356a"/>
+      <stop offset="1" stop-color="#0a142e"/>
+    </linearGradient>
+  </defs>
+
+  <rect width="512" height="512" rx="116" fill="url(#bg)"/>
+  <circle cx="256" cy="196" r="185" fill="#2dd4bf" opacity="0.07"/>
+  <rect x="30" y="30" width="452" height="452" rx="100" fill="none" stroke="url(#gold)" stroke-width="6" opacity="0.6"/>
+
+  <g transform="rotate(-25 256 396)">
+    <rect x="182" y="180" width="148" height="210" rx="16" fill="url(#navy)" stroke="url(#gold)" stroke-width="4"/>
+    <rect x="198" y="196" width="116" height="178" rx="10" fill="none" stroke="#d4af37" stroke-width="2" opacity="0.45"/>
+    <path d="M256 250 l16 35 -16 35 -16 -35 z" fill="#d4af37" opacity="0.75"/>
+  </g>
+  <g transform="rotate(25 256 396)">
+    <rect x="182" y="180" width="148" height="210" rx="16" fill="url(#navy)" stroke="url(#gold)" stroke-width="4"/>
+    <rect x="198" y="196" width="116" height="178" rx="10" fill="none" stroke="#d4af37" stroke-width="2" opacity="0.45"/>
+    <path d="M256 250 l16 35 -16 35 -16 -35 z" fill="#d4af37" opacity="0.75"/>
+  </g>
+
+  <g transform="translate(0 -24)">
+    <rect x="181" y="178" width="150" height="212" rx="16" fill="url(#face)" stroke="url(#gold)" stroke-width="5"/>
+    <rect x="193" y="190" width="126" height="188" rx="10" fill="none" stroke="#d4af37" stroke-width="2"/>
+    <g transform="translate(256 268) scale(1.45)">
+      <path d="M0,-44 C0,-44 -42,-6 -42,16 C-42,30 -31,40 -18,40 C-11,40 -5,37 0,32 C-2,44 -10,52 -20,55 L20,55 C10,52 2,44 0,32 C5,37 11,40 18,40 C31,40 42,30 42,16 C42,-6 0,-44 0,-44 Z" fill="url(#gold)" stroke="#7a5a00" stroke-width="1.5"/>
+    </g>
+  </g>
 </svg>

src/lib/sound.ts

@@ -38,7 +38,7 @@ class SoundManager {
   sfxEnabled = loadBool(LS_SFX);
   musicEnabled = loadBool(LS_MUSIC);
   musicTrack: MusicTrack =
-    (typeof window !== "undefined" && (localStorage.getItem(LS_TRACK) as MusicTrack)) || "playful";
+    (typeof window !== "undefined" && (localStorage.getItem(LS_TRACK) as MusicTrack)) || "santoor";
 
   /** Must be called from a user gesture to unlock audio. */
   init() {
@@ -198,11 +198,22 @@ class SoundManager {
   //  • playful — bouncy major-pentatonic staccato loop (UNO-like).
   private TRACKS: Record<
     MusicTrack,
-    { notes: number[]; gap: number; type: OscillatorType; attack: number; dur: number; peak: number; fifth: boolean }
+    {
+      notes: number[]; gap: number; type: OscillatorType; attack: number; dur: number;
+      peak: number; fifth: boolean;
+      shimmer?: boolean;  // bright metallic overtones — santoor pluck character
+      bassHz?: number;    // soft sustained tonic drone underneath
+    }
   > = {
     santoor: {
-      notes: [293.66, 311.13, 392, 440, 466.16, 392, 311.13, 293.66],
+      // Dastgah-e Shur on D — a calm phrase that rises then settles, looping
-      gap: 900, type: "sine", attack: 0.3, dur: 1.6, peak: 0.5, fifth: true,
+      // seamlessly. Plucked (fast attack, long decay) with metallic shimmer.
+      notes: [
+        293.66, 349.23, 392.0, 440.0, 392.0, 349.23, 311.13, 293.66,
+        349.23, 392.0, 466.16, 440.0, 392.0, 349.23, 311.13, 293.66,
+      ],
+      gap: 470, type: "triangle", attack: 0.004, dur: 1.15, peak: 0.4,
+      fifth: false, shimmer: true, bassHz: 73.42, // D2 drone
     },
     playful: {
       notes: [523.25, 659.25, 784, 659.25, 587.33, 698.46, 880, 698.46, 587.33, 523.25],
@@ -218,23 +229,35 @@ class SoundManager {
       if (!this.ctx || !this.musicGain) return;
       const cfg = this.TRACKS[this.musicTrack];
       const now = this.ctx.currentTime;
-      const freq = cfg.notes[this.step % cfg.notes.length];
+      const idx = this.step % cfg.notes.length;
+      const freq = cfg.notes[idx];
       this.step++;
-      const voice = (f: number, scale = 1) => {
+      const voice = (f: number, scale = 1, type = cfg.type, attack = cfg.attack, dur = cfg.dur) => {
         const osc = this.ctx!.createOscillator();
         const g = this.ctx!.createGain();
-        osc.type = cfg.type;
+        osc.type = type;
         osc.frequency.value = f;
         g.gain.setValueAtTime(0.0001, now);
-        g.gain.linearRampToValueAtTime(cfg.peak * scale, now + cfg.attack);
+        g.gain.linearRampToValueAtTime(cfg.peak * scale, now + attack);
-        g.gain.exponentialRampToValueAtTime(0.0001, now + cfg.dur);
+        g.gain.exponentialRampToValueAtTime(0.0001, now + dur);
         osc.connect(g);
         g.connect(this.musicGain!);
         osc.start(now);
-        osc.stop(now + cfg.dur + 0.05);
+        osc.stop(now + dur + 0.05);
       };
       voice(freq);
       if (cfg.fifth) voice(freq * 1.5, 0.45); // soft fifth above
+      if (cfg.shimmer) {
+        // Metallic santoor overtones: a brighter octave + a faint third partial,
+        // both with quick decay so the pluck shimmers then fades.
+        voice(freq * 2, 0.16, "sine", 0.003, cfg.dur * 0.55);
+        voice(freq * 3, 0.06, "sine", 0.003, cfg.dur * 0.4);
+      }
+      // Soft sustained tonic drone re-struck once per phrase half.
+      if (cfg.bassHz && idx % (cfg.notes.length / 2) === 0) {
+        const span = (cfg.gap / 1000) * (cfg.notes.length / 2);
+        voice(cfg.bassHz, 0.5, "sine", 0.25, span * 0.95);
+      }
     };
     tick();
     this.musicTimer = setInterval(tick, this.TRACKS[this.musicTrack].gap);