/* ═══════════════════════════════════════════════════════════
   BlindSearchs — CSS v4
   Brain opacity fix, new logo, capsule/speech/explorers
   ═══════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Inter:wght@300;400;500;600;700;800;900&display=swap');

:root {
  --bg: #08080d;
  --bg-card: rgba(14, 14, 22, 0.85);
  --bg-card-hover: rgba(20, 20, 30, 0.9);

  --purple: #8b7aff;
  --purple-dim: #6b5ce7;
  --purple-soft: rgba(139, 122, 255, 0.12);
  --purple-border: rgba(139, 122, 255, 0.18);
  --blue: #5ba3ef;
  --gradient: linear-gradient(135deg, #8b7aff 0%, #5ba3ef 100%);

  --text-1: #e8e8f0;
  --text-2: #7a7a95;
  --text-3: #4a4a62;

  --border: rgba(255,255,255,0.05);
  --border-2: rgba(255,255,255,0.1);

  --timer-urgent: #e84057;

  --shadow-card: 0 16px 48px rgba(0,0,0,0.55), 0 0 0 1px rgba(255,255,255,0.03);
  --shadow-btn: 0 4px 20px rgba(139,122,255,0.22);
  --shadow-btn-hover: 0 6px 32px rgba(139,122,255,0.38);

  --h: 60px;
  --r-sm: 8px;
  --r: 12px;
  --r-lg: 18px;
  --r-xl: 24px;
  --r-full: 9999px;
  --ease: cubic-bezier(0.4,0,0.2,1);
  --spring: cubic-bezier(0.34,1.56,0.64,1);
}

*,*::before,*::after{margin:0;padding:0;box-sizing:border-box;}

html{font-size:16px;scroll-behavior:smooth;-webkit-font-smoothing:antialiased;}

body{
  font-family:'Inter',-apple-system,sans-serif;
  background:var(--bg);
  color:var(--text-1);
  min-height:100vh;
  overflow-x:hidden;
  line-height:1.6;
}

::selection{background:var(--purple);color:#fff;}

/* ══════════════════════════════════
   BRAIN BG — SEAMLESS, BUMPED UP
   ══════════════════════════════════ */
.brain-bg{
  position:fixed;inset:0;z-index:0;
  display:flex;align-items:center;justify-content:center;
  pointer-events:none;overflow:hidden;
}

.brain-img{
  width:115vmin;max-width:1300px;height:auto;
  object-fit:contain;
  /* Bumped up from 0.08 → 0.13 */
  opacity:0.13;
  filter:grayscale(40%) brightness(0.65);
  transition:opacity 1s ease,filter 1s ease;
  user-select:none;pointer-events:none;
  -webkit-mask-image:radial-gradient(ellipse 58% 58% at 50% 50%,black 15%,transparent 68%);
  mask-image:radial-gradient(ellipse 58% 58% at 50% 50%,black 15%,transparent 68%);
}

.brain-color-overlay{
  position:absolute;inset:0;pointer-events:none;
  opacity:0;transition:opacity 0.7s ease;
  background:radial-gradient(
    circle 320px at var(--mouse-x,50%) var(--mouse-y,50%),
    rgba(139,122,255,0.14) 0%,
    rgba(91,163,239,0.07) 35%,
    transparent 65%
  );
  mix-blend-mode:screen;
}

body.brain-hovered .brain-img{opacity:0.19;filter:grayscale(15%) brightness(0.75);}
body.brain-hovered .brain-color-overlay{opacity:1;}

/* ══════════════════════
   HEADER
   ══════════════════════ */
.header{
  position:fixed;top:0;left:0;right:0;
  height:var(--h);
  display:flex;align-items:center;justify-content:space-between;
  padding:0 1.5rem;z-index:100;
  background:rgba(8,8,13,0.6);
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  border-bottom:1px solid var(--border);
}

/* ── Logo ── */
.logo{
  display:flex;align-items:center;gap:0.55rem;
  text-decoration:none;cursor:pointer;
  transition:opacity 0.3s;
}
.logo:hover{opacity:0.8;}

.logo-img{
  width:30px;height:30px;border-radius:8px;
  object-fit:cover;
  transition:transform 0.4s var(--ease);
}
.logo:hover .logo-img{transform:rotate(8deg) scale(1.05);}

.logo-text{
  font-family:'Space Grotesk',sans-serif;
  font-size:1.1rem;font-weight:600;letter-spacing:-0.01em;
  color:var(--text-1);
}
.logo-text-accent{color:var(--purple);}

.header-right{display:flex;align-items:center;gap:0.75rem;}

/* ── Avatar ── */
#header-avatar{
  display:none;align-items:center;justify-content:center;
  width:30px;height:30px;border-radius:50%;
  overflow:hidden;cursor:pointer;
  border:1.5px solid var(--purple-border);
}
#header-avatar img{width:100%;height:100%;object-fit:cover;}
.avatar-initials{
  width:100%;height:100%;
  background:var(--gradient);
  display:flex;align-items:center;justify-content:center;
  font-size:0.7rem;font-weight:700;color:#fff;
}

/* ── Lang toggle ── */
.lang-toggle{
  display:flex;align-items:center;gap:0.35rem;
  padding:0.32rem 0.7rem;
  border:1px solid var(--border);border-radius:var(--r-full);
  background:rgba(255,255,255,0.02);
  color:var(--text-2);cursor:pointer;
  transition:all 0.3s var(--ease);
  font-family:'Inter',sans-serif;font-size:0.72rem;font-weight:500;
}
.lang-toggle:hover{background:rgba(255,255,255,0.05);border-color:var(--border-2);color:var(--text-1);}
.lang-icon{opacity:0.45;}
.lang-toggle:hover .lang-icon{opacity:0.8;}

/* ══════════════════════
   MAIN / HERO
   ══════════════════════ */
.main{
  min-height:100vh;
  display:flex;flex-direction:column;
  align-items:center;justify-content:center;
  padding:calc(var(--h) + 2rem) 1.25rem 3.5rem;
  position:relative;z-index:1;
}

.hero{
  text-align:center;max-width:600px;width:100%;
  animation:fadeInUp 0.7s ease both;
}

.hero-badge{
  display:inline-flex;align-items:center;gap:0.45rem;
  padding:0.38rem 0.9rem;border-radius:var(--r-full);
  background:var(--purple-soft);border:1px solid var(--purple-border);
  font-size:0.7rem;font-weight:500;color:var(--purple);
  letter-spacing:0.03em;margin-bottom:1.75rem;
  animation:fadeInUp 0.7s 0.08s both;
}

.hero-badge-dot{
  width:5px;height:5px;border-radius:50%;
  background:var(--purple);
  animation:pulse-dot 2.5s infinite;
}

@keyframes pulse-dot{
  0%,100%{opacity:0.4;transform:scale(1);}
  50%{opacity:1;transform:scale(1.3);}
}

.hero-title{
  font-family:'Space Grotesk',sans-serif;
  font-size:clamp(1.8rem,4.2vw,3rem);font-weight:700;
  line-height:1.15;letter-spacing:-0.035em;
  margin-bottom:1.1rem;white-space:pre-line;
  color:var(--text-1);
}

.hero-subtitle{
  font-size:clamp(0.84rem,1.6vw,0.97rem);
  color:var(--text-2);line-height:1.75;
  margin-bottom:2.25rem;max-width:440px;margin-left:auto;margin-right:auto;
}

/* ── Category chips ── */
.category-filter{
  display:flex;flex-wrap:wrap;justify-content:center;
  gap:0.32rem;margin-bottom:2rem;
  animation:fadeInUp 0.7s 0.15s both;
}

.category-chip{
  display:inline-flex;align-items:center;
  padding:0.36rem 0.78rem;border-radius:var(--r-full);
  border:1px solid var(--border);background:transparent;
  color:var(--text-2);font-family:'Inter',sans-serif;
  font-size:0.71rem;font-weight:500;cursor:pointer;
  transition:all 0.25s var(--ease);white-space:nowrap;
}
.category-chip:hover{border-color:var(--border-2);color:var(--text-1);background:rgba(255,255,255,0.03);}
.category-chip.active{background:var(--purple-soft);border-color:var(--purple-border);color:var(--purple);}

/* ── Get Topic btn ── */
.get-topic-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:0.5rem;
  padding:0.85rem 2.2rem;
  font-family:'Space Grotesk',sans-serif;font-size:0.92rem;font-weight:600;
  color:#fff;background:var(--purple-dim);border:none;border-radius:var(--r-full);
  cursor:pointer;transition:all 0.3s var(--ease);
  box-shadow:var(--shadow-btn);
  animation:fadeInUp 0.7s 0.25s both;
  position:relative;overflow:hidden;
}
.get-topic-btn::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(255,255,255,0.07) 0%,transparent 50%);
  pointer-events:none;
}
.get-topic-btn:hover{background:var(--purple);transform:translateY(-2px);box-shadow:var(--shadow-btn-hover);}
.get-topic-btn:active{transform:translateY(0);}
.btn-arrow{transition:transform 0.3s var(--ease);opacity:0.6;}
.get-topic-btn:hover .btn-arrow{transform:translateX(3px);opacity:1;}

/* ══════════════════════
   TOPIC CARD
   ══════════════════════ */
.topic-backdrop{
  display:none;position:fixed;inset:0;z-index:9;
  background:rgba(4,4,8,0.65);
  backdrop-filter:blur(5px);-webkit-backdrop-filter:blur(5px);
  cursor:pointer;
}
.topic-backdrop.visible{display:block;animation:fadeIn 0.3s both;}

.topic-section{display:none;width:100%;max-width:520px;position:relative;z-index:10;}
.topic-section.visible{display:block;animation:fadeInScale 0.45s var(--spring) both;}

.topic-card{
  position:relative;
  background:var(--bg-card);
  backdrop-filter:blur(30px);-webkit-backdrop-filter:blur(30px);
  border:1px solid var(--border);border-radius:var(--r-xl);
  padding:2rem;box-shadow:var(--shadow-card);
  transition:border-color 0.3s;
}
.topic-card::before{
  content:'';position:absolute;top:0;left:20%;right:20%;height:1px;
  background:linear-gradient(90deg,transparent,var(--purple),transparent);
  opacity:0.22;
}
.topic-card:hover{border-color:var(--border-2);}

.topic-category-badge{
  display:inline-flex;align-items:center;gap:0.38rem;
  padding:0.25rem 0.68rem;border-radius:var(--r-full);
  background:var(--purple-soft);border:1px solid var(--purple-border);
  font-size:0.63rem;font-weight:600;color:var(--purple);
  margin-bottom:1.1rem;letter-spacing:0.06em;text-transform:uppercase;
}
.cat-dot{width:5px;height:5px;border-radius:50%;background:var(--purple);flex-shrink:0;}

.topic-title{
  font-family:'Space Grotesk',sans-serif;
  font-size:clamp(1.3rem,3vw,1.75rem);font-weight:700;
  letter-spacing:-0.025em;line-height:1.2;margin-bottom:0.65rem;color:var(--text-1);
}

.topic-description{font-size:0.88rem;color:var(--text-2);line-height:1.7;margin-bottom:1.2rem;}

.topic-hints{
  padding:0.8rem 1rem;
  background:rgba(255,255,255,0.015);border:1px solid var(--border);
  border-radius:var(--r);margin-bottom:1.4rem;
}
.topic-hints-label{
  font-size:0.58rem;font-weight:700;text-transform:uppercase;
  letter-spacing:0.1em;color:var(--text-3);margin-bottom:0.35rem;
}
.topic-hints-text{font-size:0.8rem;color:var(--text-2);line-height:1.6;font-style:italic;}

/* ── Timer bar ── */
.timer-block{margin-bottom:1.4rem;padding:0.75rem 0 0.25rem;}
.timer-top{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:0.55rem;}
.timer-display{
  font-family:'Space Grotesk',monospace;font-size:1.6rem;font-weight:700;
  font-variant-numeric:tabular-nums;letter-spacing:0.04em;color:var(--text-1);
  transition:color 0.4s;
}
.timer-label{font-size:0.58rem;font-weight:600;text-transform:uppercase;letter-spacing:0.12em;color:var(--text-3);}
.timer-bar-track{width:100%;height:2px;background:rgba(255,255,255,0.04);border-radius:2px;overflow:hidden;}
.timer-bar-fill{width:100%;height:100%;background:var(--gradient);border-radius:2px;transition:width 1s linear;}
.timer-block.timer-urgent .timer-display{color:var(--timer-urgent);animation:timerPulse 1s infinite;}
.timer-block.timer-urgent .timer-bar-fill{background:var(--timer-urgent);}
@keyframes timerPulse{0%,100%{opacity:1;}50%{opacity:0.35;}}

/* ── Action btns ── */
.topic-actions{display:flex;gap:0.55rem;justify-content:center;}

.btn-secondary{
  display:inline-flex;align-items:center;justify-content:center;gap:0.35rem;
  padding:0.58rem 1.25rem;
  font-family:'Inter',sans-serif;font-size:0.76rem;font-weight:500;
  border-radius:var(--r-full);cursor:pointer;
  border:1px solid var(--border);background:transparent;color:var(--text-2);
  transition:all 0.25s var(--ease);text-decoration:none;
}
.btn-secondary:hover{background:rgba(255,255,255,0.04);border-color:var(--border-2);color:var(--text-1);}

.btn-primary-sm{
  display:inline-flex;align-items:center;justify-content:center;gap:0.35rem;
  padding:0.58rem 1.25rem;
  font-family:'Inter',sans-serif;font-size:0.76rem;font-weight:600;
  border-radius:var(--r-full);cursor:pointer;border:none;
  background:var(--purple-dim);color:#fff;
  box-shadow:var(--shadow-btn);
  transition:all 0.25s var(--ease);
  position:relative;overflow:hidden;
}
.btn-primary-sm::after{
  content:'';position:absolute;inset:0;border-radius:var(--r-full);
  background:linear-gradient(135deg,rgba(255,255,255,0.06) 0%,transparent 50%);
  pointer-events:none;
}
.btn-primary-sm:hover{background:var(--purple);transform:translateY(-1px);box-shadow:var(--shadow-btn-hover);}

/* ══════════════════════════════════
   TIME'S UP OVERLAY (Full Screen)
   ══════════════════════════════════ */
.timeup-overlay{
  display:none;position:fixed;inset:0;z-index:200;
  background:rgba(6,6,10,0.97);
  overflow-y:auto;
  -webkit-overflow-scrolling:touch;
}
.timeup-overlay.visible{display:block;animation:fadeIn 0.4s both;}

.timeup-scroll{
  min-height:100%;
  display:flex;flex-direction:column;align-items:center;
  padding:2rem 1.25rem 4rem;max-width:600px;margin:0 auto;
}

/* ── Timeup header ── */
.timeup-header{text-align:center;padding:2rem 0 2.5rem;}
.timeup-topic-pill{
  display:inline-block;padding:0.3rem 0.9rem;
  border-radius:var(--r-full);
  background:var(--purple-soft);border:1px solid var(--purple-border);
  font-size:0.68rem;font-weight:600;color:var(--purple);
  letter-spacing:0.05em;margin-bottom:1rem;
}
.timeup-title{
  font-family:'Space Grotesk',sans-serif;
  font-size:2rem;font-weight:700;letter-spacing:-0.03em;
  color:var(--purple);margin-bottom:0.4rem;
}
.timeup-sub{font-size:0.9rem;color:var(--text-2);}

/* ── Capsule section ── */
.capsule-section{
  width:100%;background:var(--bg-card);
  border:1px solid var(--border);border-radius:var(--r-xl);
  padding:1.5rem;margin-bottom:1.5rem;
  box-shadow:var(--shadow-card);
}
.capsule-header{margin-bottom:1.1rem;}
.capsule-title{
  font-family:'Space Grotesk',sans-serif;
  font-size:0.95rem;font-weight:700;color:var(--text-1);margin-bottom:0.25rem;
}
.capsule-subtitle{font-size:0.78rem;color:var(--text-2);}

#capsule-user-line{
  display:flex;align-items:center;gap:0.5rem;
  margin-top:0.75rem;font-size:0.76rem;color:var(--text-2);
}
#capsule-user-line .cap-avatar-img{width:22px;height:22px;border-radius:50%;object-fit:cover;}
#capsule-user-line .cap-avatar-initials{
  width:22px;height:22px;border-radius:50%;
  background:var(--gradient);
  display:flex;align-items:center;justify-content:center;
  font-size:0.6rem;font-weight:700;color:#fff;flex-shrink:0;
}
.login-hint{color:var(--text-3);font-size:0.72rem;font-style:italic;}

.capsule-input-wrap{position:relative;margin-bottom:0.75rem;}

#capsule-text{
  width:100%;min-height:90px;
  background:rgba(255,255,255,0.025);
  border:1px solid var(--border);border-radius:var(--r);
  color:var(--text-1);font-family:'Inter',sans-serif;font-size:0.85rem;
  line-height:1.6;padding:0.85rem;
  resize:vertical;outline:none;
  transition:border-color 0.25s;
}
#capsule-text:focus{border-color:var(--purple-border);}
#capsule-text::placeholder{color:var(--text-3);}

/* ── Loading Dots ── */
.explorers-loading{
  display:flex;align-items:center;justify-content:center;gap:6px;
  padding:1.5rem 0;
}
.loading-dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--purple);opacity:0.3;
  animation:loadDots 1.2s ease-in-out infinite;
}
.loading-dot:nth-child(2){animation-delay:0.15s;}
.loading-dot:nth-child(3){animation-delay:0.3s;}
@keyframes loadDots{
  0%,80%,100%{opacity:0.3;transform:scale(1);}
  40%{opacity:1;transform:scale(1.3);}
}

#submit-capsule-btn{
  width:100%;padding:0.7rem;
  font-family:'Space Grotesk',sans-serif;font-size:0.85rem;font-weight:600;
  color:#fff;background:var(--purple-dim);border:none;border-radius:var(--r);
  cursor:pointer;transition:all 0.25s;
}
#submit-capsule-btn:hover{background:var(--purple);}
#submit-capsule-btn:disabled{opacity:0.6;cursor:default;}

/* ── Explorers section ── */
.explorers-section{
  width:100%;margin-bottom:1.5rem;
}
.explorers-title{
  font-family:'Space Grotesk',sans-serif;
  font-size:0.85rem;font-weight:600;color:var(--text-2);
  margin-bottom:0.85rem;
  display:flex;align-items:center;gap:0.45rem;
}
.explorers-title::before{
  content:'';display:inline-block;
  width:3px;height:14px;border-radius:2px;
  background:var(--gradient);flex-shrink:0;
}

.explorers-empty{font-size:0.78rem;color:var(--text-3);text-align:center;padding:1rem 0;}

.explorer-card{
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--r-lg);padding:1rem 1.15rem;margin-bottom:0.6rem;
  transition:border-color 0.25s;
}
.explorer-card:hover{border-color:var(--border-2);}
.cap-header{display:flex;align-items:center;gap:0.5rem;margin-bottom:0.55rem;}
.cap-avatar{flex-shrink:0;}
.cap-avatar-img{width:26px;height:26px;border-radius:50%;object-fit:cover;}
.cap-avatar-initials{
  width:26px;height:26px;border-radius:50%;
  background:var(--gradient);
  display:flex;align-items:center;justify-content:center;
  font-size:0.65rem;font-weight:700;color:#fff;
}
.cap-meta{display:flex;align-items:center;gap:0.4rem;flex:1;}
.cap-name{font-size:0.75rem;font-weight:600;color:var(--text-1);}
.cap-rank{font-size:0.9rem;}
.cap-text{font-size:0.82rem;color:var(--text-2);line-height:1.6;margin-bottom:0.65rem;font-style:italic;}
.cap-footer{display:flex;justify-content:flex-end;}
.upvote-btn{
  display:inline-flex;align-items:center;gap:0.3rem;
  padding:0.28rem 0.65rem;border-radius:var(--r-full);
  border:1px solid var(--border);background:transparent;
  color:var(--text-2);font-size:0.72rem;cursor:pointer;
  transition:all 0.2s;
}
.upvote-btn:hover:not(:disabled){border-color:var(--purple-border);color:var(--purple);}
.upvote-btn.upvoted{color:var(--purple);border-color:var(--purple-border);background:var(--purple-soft);}
.upvote-btn:disabled{cursor:default;}

/* ── Timeup actions ── */
.timeup-actions{
  display:flex;gap:0.6rem;justify-content:center;
  padding-top:0.5rem;
}
.timeup-actions-top{
  margin-bottom:1.5rem;
}

/* ══════════════════════
   ADSENSE PLACEHOLDER
   Invisible reservation — no visual impact
   ══════════════════════ */
.adsense-placeholder{
  width:100%;max-width:336px;
  min-height:280px;
  margin:0 auto 1rem;
  /* Completely invisible — same as background */
  background:transparent;
  border:none;outline:none;
  /* Will contain AdSense <ins> tag after approval */
}

/* ══════════════════════
   GOOGLE AUTH MODAL
   ══════════════════════ */
.auth-modal-backdrop{
  display:none;position:fixed;inset:0;z-index:499;
  background:rgba(4,4,8,0.8);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
}
.auth-modal-backdrop.visible{display:block;animation:fadeIn 0.3s both;}

.auth-modal{
  display:none;position:fixed;
  top:50%;left:50%;transform:translate(-50%,-50%);
  z-index:500;width:min(340px,90vw);
  background:rgba(14,14,22,0.98);
  border:1px solid var(--border);border-radius:var(--r-xl);
  padding:2rem;
  box-shadow:0 24px 64px rgba(0,0,0,0.6);
  text-align:center;
}
.auth-modal.visible{display:block;animation:fadeInScale 0.35s var(--spring) both;}

.auth-modal-close{
  position:absolute;top:0.75rem;right:0.75rem;
  width:28px;height:28px;border-radius:50%;
  background:rgba(255,255,255,0.04);border:1px solid var(--border);
  color:var(--text-2);cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  font-size:1rem;transition:all 0.2s;
}
.auth-modal-close:hover{background:rgba(255,255,255,0.08);color:var(--text-1);}

.auth-modal-icon{
  width:52px;height:52px;border-radius:14px;
  background:var(--purple-soft);border:1px solid var(--purple-border);
  display:flex;align-items:center;justify-content:center;
  margin:0 auto 1.1rem;
  overflow:hidden;
}
.auth-modal-icon img{width:34px;height:34px;object-fit:contain;border-radius:8px;}

.auth-modal-title{
  font-family:'Space Grotesk',sans-serif;
  font-size:1.1rem;font-weight:700;color:var(--text-1);margin-bottom:0.4rem;
}
.auth-modal-sub{font-size:0.78rem;color:var(--text-2);margin-bottom:1.5rem;line-height:1.5;}

#google-btn-container{display:flex;justify-content:center;}
/* Google's button has its own styling, just center it */

/* ══════════════════════
   FOOTER
   ══════════════════════ */
.footer{
  position:fixed;bottom:0;left:0;right:0;
  padding:0.55rem 1.5rem;
  display:flex;align-items:center;justify-content:space-between;
  z-index:1;border-top:1px solid var(--border);
  background:rgba(8,8,13,0.5);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
}
.footer-text,.footer-credit{font-size:0.62rem;color:var(--text-3);}

/* ══════════════════════
   KEYFRAMES
   ══════════════════════ */
@keyframes fadeIn{from{opacity:0;}to{opacity:1;}}
@keyframes fadeInUp{from{opacity:0;transform:translateY(16px);}to{opacity:1;transform:translateY(0);}}
@keyframes fadeInScale{from{opacity:0;transform:scale(0.95);}to{opacity:1;transform:scale(1);}}
@keyframes slideOut{to{opacity:0;transform:translateY(-12px) scale(0.97);}}

/* ══════════════════════
   RESPONSIVE
   ══════════════════════ */
@media(max-width:768px){
  .header{padding:0 1rem;}
  .main{padding:calc(var(--h) + 1rem) 1rem 4rem;}
  .hero-title{font-size:1.55rem;}
  .hero-subtitle{font-size:0.83rem;margin-bottom:1.5rem;}
  .category-filter{gap:0.25rem;margin-bottom:1.25rem;}
  .category-chip{padding:0.3rem 0.6rem;font-size:0.67rem;}
  .get-topic-btn{padding:0.75rem 1.8rem;font-size:0.85rem;}
  .topic-card{padding:1.5rem;}
  .topic-title{font-size:1.2rem;}
  .topic-actions{flex-direction:column;}
  .footer{flex-direction:column;gap:0.15rem;text-align:center;padding:0.5rem 1rem;}
  .timeup-actions{flex-direction:column;}
  .brain-img{width:140vmin;}
}
@media(max-width:480px){
  .hero-title{font-size:1.3rem;}
  .topic-card{padding:1.2rem;}
  .timer-display{font-size:1.35rem;}
  .logo-text{font-size:0.95rem;}
  .timeup-scroll{padding:1.5rem 1rem 3.5rem;}
}

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

:focus-visible{outline:2px solid var(--purple);outline-offset:3px;}
button:focus:not(:focus-visible){outline:none;}
::-webkit-scrollbar{width:4px;}
::-webkit-scrollbar-track{background:var(--bg);}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,0.05);border-radius:2px;}
::-webkit-scrollbar-thumb:hover{background:rgba(255,255,255,0.1);}