@import url('https://fonts.googleapis.com/css2?family=Bebas+Neue&family=DM+Sans:wght@400;500&display=swap');

:root {
  --bg: #0a0a0a;
  --surface: #111111;
  --card: #161616;
  --border: #2a2a2a;
  --accent: #00ffea;
  --accent2: #8b3fe2;
  --muted: #555555;
  --text: #f0f0f0;
  --sub: #888888;
  --green: #1d9e75;
  --green-dark: #04342c;
  --green-mid: #5dcaa5;
  --blue: #00cfff;
  --pink: #fa0588ea;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { background: var(--bg); font-family: 'DM Sans', sans-serif; color: var(--text); min-height: 100vh; }

/* ── HEADER ── */
#header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 16px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
#header h1 { font-family: 'Bebas Neue', sans-serif; font-size: 34px; letter-spacing: 3px; }
#header h1 span { color: var(--accent); }
#hdr-right { text-align: right; }
#hdr-day { font-family: 'Bebas Neue', sans-serif; font-size: 20px; color: var(--accent); letter-spacing: 2px; }
#hdr-date { font-size: 12px; color: var(--sub); }
#clock { font-family: 'Bebas Neue', sans-serif; font-size: 26px; letter-spacing: 3px; }
#sync-status { font-size: 11px; color: var(--sub); margin-top: 2px; }
#sync-status.syncing { color: var(--blue); }
#sync-status.ok { color: var(--green); }
#sync-status.err { color: var(--accent2); }

/* ── NAV ── */
#nav-tabs {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
#nav-tabs::-webkit-scrollbar { display: none; }
.nav-tab {
  padding: 12px 24px;
  font-family: 'Bebas Neue', sans-serif;
  font-size: 18px;
  letter-spacing: 1px;
  cursor: pointer;
  color: var(--sub);
  border-bottom: 2px solid transparent;
  transition: all 0.15s;
  white-space: nowrap;
  flex-shrink: 0;
}
.nav-tab:hover { color: var(--text); }
.nav-tab.active { color: var(--accent); border-bottom-color: var(--accent); }

/* ── MAIN ── */
#main { padding: 22px 28px; max-width: 1400px; margin: 0 auto; }
.tab-content { display: none; }
.tab-content.active { display: block; }

/* ── WEEK STRIP ── */
#week-strip { display: grid; grid-template-columns: repeat(7, 1fr); gap: 8px; margin-bottom: 22px; }
.day-pill {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 4px;
  text-align: center;
  cursor: pointer;
  transition: all 0.15s;
}
.day-pill:hover { border-color: var(--accent); }
.day-pill.active { border-color: var(--accent); background: #1a1d00; }
.day-pill.rest { opacity: 0.4; cursor: default; }
.day-pill.logged { border-color: var(--green); background: #04342c22; }
.dp-name { font-size: 11px; color: var(--sub); text-transform: uppercase; letter-spacing: 1px; }
.dp-type { font-family: 'Bebas Neue', sans-serif; font-size: 14px; letter-spacing: 1px; margin-top: 3px; }
.dp-tick { font-size: 11px; color: var(--green); margin-top: 2px; }
.tag-strength { color: var(--accent2); }
.tag-saturday-roast { color: var(--pink); }
.tag-cardio { color: var(--blue); }
.tag-rest { color: var(--muted); }

/* ── WORKOUT AREA ── */
#workout-area { display: grid; grid-template-columns: 1fr 320px; gap: 18px; }
#workout-main {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  position: relative;
}
#workout-header {
  padding: 18px 22px 14px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
#workout-title { font-family: 'Bebas Neue', sans-serif; font-size: 38px; letter-spacing: 2px; line-height: 1; }
#workout-meta { display: flex; gap: 10px; margin-top: 7px; flex-wrap: wrap; }
.meta-chip { font-size: 12px; padding: 3px 10px; border-radius: 20px; font-weight: 500; }
.chip-strength { background: #2a0f00; color: var(--accent2); border: 1px solid #ff4d0044; }
.chip-cardio { background: #001a22; color: var(--blue); border: 1px solid #00cfff44; }
.chip-saturday-roast { background: #001a22; color: var(--pink); border: 1px solid #F09EEB; }
.chip-duration { background: #1a1a1a; color: var(--sub); border: 1px solid var(--border); }
.chip-done { background: var(--green-dark); color: var(--green-mid); border: 1px solid #1d9e7544; }
.chip-muscles { background: #160d22; color: #bb88ff; border: 1px solid #bb88ff33; max-width: 300px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.hdr-btns { display: flex; gap: 8px; flex-shrink: 0; flex-wrap: wrap; }
.gym-btn {
  border: none;
  border-radius: 8px;
  padding: 9px 14px;
  font-family: 'Bebas Neue', sans-serif;
  font-size: 16px;
  letter-spacing: 1px;
  cursor: pointer;
  transition: opacity 0.15s, transform 0.1s;
  white-space: nowrap;
}
.gym-btn:hover { opacity: 0.85; }
.gym-btn:active { transform: scale(0.97); }
.gym-btn:disabled { opacity: 0.35; cursor: default; }
.gym-btn.btn-generate { background: var(--accent); color: #000; }
.gym-btn.btn-log { background: var(--green); color: #fff; display: none; }

/* ── EXERCISES ── */
#exercises { padding: 0 22px 18px; }
.section-label { font-size: 11px; color: var(--sub); text-transform: uppercase; letter-spacing: 2px; margin: 16px 0 4px; }
.section-sublabel { font-size: 12px; color: var(--sub); margin-bottom: 10px; line-height: 1.5; font-style: italic; }
.cat-badge { font-size: 10px; padding: 2px 7px; border-radius: 10px; font-weight: 500; vertical-align: middle; margin-left: 6px; letter-spacing: 0.5px; }
.exercise-row {
  display: grid;
  grid-template-columns: 26px 1fr auto auto;
  align-items: center;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid #1c1c1c;
}
.exercise-row:last-child { border-bottom: none; }
.ex-num { font-family: 'Bebas Neue', sans-serif; font-size: 18px; color: var(--muted); text-align: center; }
.ex-name { font-size: 14px; font-weight: 500; }
.ex-note { font-size: 12px; color: var(--sub); margin-top: 2px; }
.ex-sets { font-family: 'Bebas Neue', sans-serif; font-size: 20px; color: var(--accent); letter-spacing: 1px; text-align: right; }
.ex-sets-label { font-size: 11px; color: var(--sub); font-family: 'DM Sans', sans-serif; letter-spacing: 0; }
.ex-reps { font-size: 12px; color: var(--sub); text-align: right; white-space: nowrap; }

/* ── SIDEBAR ── */
#sidebar { display: flex; flex-direction: column; gap: 14px; }
.side-card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 16px; }
.side-card h3 { font-family: 'Bebas Neue', sans-serif; font-size: 18px; letter-spacing: 1px; margin-bottom: 12px; }
.stat-row { display: flex; justify-content: space-between; align-items: center; padding: 7px 0; border-bottom: 1px solid #1c1c1c; font-size: 13px; }
.stat-row:last-child { border-bottom: none; }
.stat-label { color: var(--sub); }
.stat-val { font-weight: 500; }
.stat-val.accent { color: var(--accent); }
.tip-box { background: #0e0e00; border: 1px solid #2a2a00; border-radius: 8px; padding: 11px; font-size: 13px; color: #aaa; line-height: 1.6; }
.tip-box strong { color: var(--accent); font-weight: 500; }

/* ── WEEK PROGRESS ── */
.week-prog-wrap { margin-bottom: 16px; }
.week-prog-label { display: flex; justify-content: space-between; font-size: 12px; color: var(--sub); margin-bottom: 6px; }
.week-prog-bar { height: 8px; background: #1a1a1a; border-radius: 4px; overflow: hidden; }
.week-prog-fill { height: 100%; background: var(--accent); border-radius: 4px; transition: width 0.4s; }
.week-days-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-top: 10px; }
.week-day-chip { background: #1a1a1a; border: 1px solid var(--border); border-radius: 8px; padding: 8px; text-align: center; font-size: 12px; color: var(--sub); }
.week-day-chip.done { background: var(--green-dark); border-color: var(--green); color: var(--green-mid); }
.week-day-chip .wdc-day { font-family: 'Bebas Neue', sans-serif; font-size: 16px; display: block; margin-bottom: 2px; }

/* ── PRESETS GRID ── */
.presets-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 4px; }
.preset-btn {
  background: #1a1a1a;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--sub);
  font-size: 12px;
  padding: 8px;
  cursor: pointer;
  transition: all 0.15s;
  text-align: center;
}
.preset-btn:hover { border-color: var(--accent); color: var(--text); background: #1a1d00; }
.preset-btn .pb-name { font-family: 'Bebas Neue', sans-serif; font-size: 15px; letter-spacing: 1px; color: var(--text); display: block; margin-bottom: 2px; }

/* ── LOADING OVERLAY ── */
#loading-overlay {
  display: none;
  position: absolute;
  inset: 0;
  background: rgba(10, 10, 10, 0.88);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 10px;
  border-radius: 12px;
  z-index: 10;
}
#loading-overlay.show { display: flex; }
.spinner { width: 34px; height: 34px; border: 3px solid #2a2a2a; border-top-color: var(--accent); border-radius: 50%; animation: spin 0.7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.load-text { font-family: 'Bebas Neue', sans-serif; font-size: 16px; letter-spacing: 2px; color: var(--sub); }
.rest-msg { padding: 36px 22px; text-align: center; font-family: 'Bebas Neue', sans-serif; font-size: 28px; letter-spacing: 3px; color: var(--muted); }
.rest-msg span { display: block; font-size: 13px; font-family: 'DM Sans', sans-serif; letter-spacing: 0; color: var(--muted); margin-top: 6px; }

/* ── TIMER ── */
#timer-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; align-items: start; }
.timer-card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 24px; }
.timer-card h2 { font-family: 'Bebas Neue', sans-serif; font-size: 22px; letter-spacing: 1px; margin-bottom: 18px; }
#big-timer { font-family: 'Bebas Neue', sans-serif; font-size: clamp(52px, 18vw, 88px); line-height: 1; letter-spacing: 4px; text-align: center; transition: color 0.3s; color: var(--text); }
#timer-status { text-align: center; font-size: 13px; color: var(--sub); margin: 6px 0 20px; letter-spacing: 1px; text-transform: uppercase; }
#round-display { text-align: center; font-family: 'Bebas Neue', sans-serif; font-size: 20px; color: var(--sub); margin-bottom: 20px; }
#round-display span { color: var(--accent); }
.timer-btn-row { display: flex; gap: 10px; justify-content: center; margin-bottom: 18px; flex-wrap: wrap; }
.tbtn {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-family: 'Bebas Neue', sans-serif;
  font-size: 18px;
  letter-spacing: 1px;
  padding: 10px 22px;
  cursor: pointer;
  transition: all 0.15s;
}
.tbtn:hover { border-color: var(--accent); color: var(--accent); }
.tbtn.primary { background: var(--accent); color: #000; border-color: var(--accent); }
.tbtn.primary:hover { opacity: 0.85; }
.tbtn.danger { border-color: #ff4d0066; color: var(--accent2); }
.tbtn.danger:hover { background: #2a0f00; }
.cfg-row { display: flex; align-items: center; justify-content: space-between; padding: 10px 0; border-bottom: 1px solid #1c1c1c; }
.cfg-row:last-child { border-bottom: none; }
.cfg-label { font-size: 13px; color: var(--sub); }
.cfg-val { font-family: 'Bebas Neue', sans-serif; font-size: 20px; color: var(--accent); min-width: 50px; text-align: center; }
.cfg-btns { display: flex; align-items: center; gap: 8px; }
.cfg-btn {
  width: 30px; height: 30px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  font-size: 18px;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.15s;
  line-height: 1;
}
.cfg-btn:hover { border-color: var(--accent); color: var(--accent); }
#progress-bar-wrap { height: 6px; background: #1a1a1a; border-radius: 3px; margin-bottom: 10px; overflow: hidden; }
#progress-bar { height: 100%; background: var(--accent); border-radius: 3px; transition: width 0.9s linear, background 0.3s; width: 100%; }
#timer-log { margin-top: 14px; max-height: 140px; overflow-y: auto; }
.log-entry { font-size: 12px; color: var(--sub); padding: 4px 0; border-bottom: 1px solid #1a1a1a; }
.log-entry.highlight { color: var(--accent); }
.cfg-section-label { font-size: 11px; color: var(--sub); letter-spacing: 2px; text-transform: uppercase; margin-bottom: 10px; }

/* ── PROGRESS ── */
.progress-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 22px; }
.stat-big { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 18px; text-align: center; }
.stat-big .sb-num { font-family: 'Bebas Neue', sans-serif; font-size: 48px; color: var(--accent); line-height: 1; }
.stat-big .sb-label { font-size: 12px; color: var(--sub); margin-top: 4px; text-transform: uppercase; letter-spacing: 1px; }
.progress-lower { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.prog-card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 20px; }
.prog-card h3 { font-family: 'Bebas Neue', sans-serif; font-size: 20px; letter-spacing: 1px; margin-bottom: 16px; }

/* ── BADGES ── */
.badges-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.badge-item { border-radius: 10px; padding: 14px; text-align: center; border: 1px solid var(--border); transition: all 0.2s; }
.badge-item.earned { border-color: #e8ff0066; background: #1a1d00; }
.badge-item.locked { opacity: 0.35; filter: grayscale(1); }
.badge-icon { font-size: 28px; margin-bottom: 6px; line-height: 1; }
.badge-name { font-family: 'Bebas Neue', sans-serif; font-size: 14px; letter-spacing: 1px; color: var(--text); }
.badge-desc { font-size: 11px; color: var(--sub); margin-top: 3px; line-height: 1.4; }
.badge-date { font-size: 10px; color: var(--green); margin-top: 4px; }

/* ── HISTORY ── */
.history-list { max-height: 360px; overflow-y: auto; }
.history-item { display: flex; align-items: center; gap: 12px; padding: 10px 0; border-bottom: 1px solid #1c1c1c; }
.history-item:last-child { border-bottom: none; }
.h-dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }
.h-dot.strength { background: var(--accent2); }
.h-dot.cardio { background: var(--blue); }
.h-info { flex: 1; }
.h-name { font-size: 13px; font-weight: 500; }
.h-date { font-size: 11px; color: var(--sub); margin-top: 1px; }
.h-badge { font-size: 11px; color: var(--accent); background: #1a1d00; border: 1px solid #e8ff0033; border-radius: 12px; padding: 2px 8px; white-space: nowrap; }
.history-empty { color: var(--sub); font-size: 13px; padding: 20px 0; text-align: center; line-height: 1.8; }

/* ── TOAST ── */
#toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: #1a1d00;
  border: 1px solid var(--accent);
  border-radius: 10px;
  padding: 12px 20px;
  font-family: 'Bebas Neue', sans-serif;
  font-size: 16px;
  letter-spacing: 1px;
  color: var(--accent);
  z-index: 9999;
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
  max-width: 320px;
}
#toast.show { opacity: 1; }

/* ── LOGIN PAGE ── */
#login {
  max-width: 420px;
  margin: 80px auto;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;

}

#login-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 16px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
#login-header h1 { font-family: 'Bebas Neue', sans-serif; font-size: 34px; letter-spacing: 3px; }
#login-header h1 span { color: var(--accent); }

#login h2 {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 28px;
  letter-spacing: 2px;
  margin-bottom: 24px;
}
#login input {
  display: block;
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-family: 'DM Sans', sans-serif;
  font-size: 15px;
  padding: 11px 14px;
  margin-bottom: 12px;
}
#login input:focus {
  outline: none;
  border-color: var(--accent);
}
#login .gym-btn {
  width: 100%;
  margin-bottom: 10px;
  font-size: 17px;
  padding: 12px;
}
#login #msg {
  margin-top: 12px;
  font-size: 13px;
  color: var(--sub);
  text-align: center;
}

.equip-check {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  cursor: pointer;
  font-size: 0.88rem;
  transition: border-color 0.15s;
}
.equip-check:has(input:checked) {
  border-color: var(--accent);
  color: var(--accent);
}
.equip-check input {
  accent-color: var(--accent);
}

@media (max-width: 640px) {
  #login {
    margin: 24px 16px;
    padding: 24px 20px;
  }
}

/* ════════════════════════════════
   RESPONSIVE — TABLET (≤ 900px)
════════════════════════════════ */
@media (max-width: 900px) {
  /* Stack sidebar below workout */
  #workout-area {
    grid-template-columns: 1fr;
  }

  /* Stack timer config below clock */
  #timer-wrap {
    grid-template-columns: 1fr;
  }
}


/* ════════════════════════════════
   RESPONSIVE — MOBILE (≤ 640px)
════════════════════════════════ */
@media (max-width: 640px) {
    body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
  }
  
  /* Login Header */
  #login-header {
    padding: 28px 12px;
  }
  #login-header h1 { 
    font-size: 54px;
    letter-spacing: 4px;
    padding-left: 10px;
  }
  
  #hdr-day { font-size: 16px; }
  #clock { font-size: 20px; }
  #hdr-date, #sync-status { font-size: 10px; }

  /* Nav */
  .nav-tab {
    padding: 10px 16px;
    font-size: 15px;
  }

  /* Main padding */
  #main {
    padding: 14px 12px;
  }

  /* Week strip: 4 cols instead of 7 to avoid squishing */
  #week-strip {
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
  }

  /* Workout header title */
  #workout-title {
    font-size: 28px;
  }
  #workout-header {
    padding: 14px 14px 12px;
  }
  #exercises {
    padding: 0 14px 14px;
  }

  /* Exercise rows: hide the number column to save space */
  .exercise-row {
    grid-template-columns: 1fr auto auto;
    gap: 8px;
  }
  .ex-num { display: none; }

  /* Gym buttons: smaller text */
  .gym-btn {
    font-size: 14px;
    padding: 8px 11px;
  }

  /* Progress stats: 2 cols */
  .progress-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }
  .stat-big .sb-num { font-size: 38px; }

  /* Progress lower: single column */
  .progress-lower {
    grid-template-columns: 1fr;
  }

  /* Badges: 2 cols */
  .badges-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Timer cards: tighter padding */
  .timer-card {
    padding: 16px;
  }

  /* Toast: full width on mobile */
  #toast {
    left: 16px;
    right: 16px;
    bottom: 16px;
    max-width: none;
    text-align: center;
  }

  /* Side cards: tighter */
  .side-card {
    padding: 12px;
  }
  /* Login card fills remaining space */
  #login {
    flex: 1;
    margin: 16px;
    padding: 32px 24px;
    max-width: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  #login h2 {
    font-size: 32px;
    margin-bottom: 28px;
  }

  #login input {
    font-size: 16px;
    padding: 14px;
    margin-bottom: 14px;
  }

  #login .gym-btn {
    font-size: 20px;
    padding: 16px;
    margin-bottom: 12px;
  }
}