/* ── 1. Tokens ── */
:root {
  --red:        #e34949;
  --red-dim:    #c93c3c;
  --red-glow:   rgba(227,73,73,0.25);

  /* Mode accent colours */
  --work-color:  #e34949;
  --short-color: #34c759;
  --long-color:  #007aff;
  --accent:      var(--work-color);

  --bg:           #f5f5f7;
  --surface:      #ffffff;
  --surface-2:    #fafafa;
  --border:       rgba(0,0,0,0.08);
  --text:         #1d1d1f;
  --text-2:       #6e6e73;
  --text-3:       #aeaeb2;
  --shadow-sm:    0 2px 8px rgba(0,0,0,0.06);
  --shadow-md:    0 8px 32px rgba(0,0,0,0.10);
  --shadow-lg:    0 24px 64px rgba(0,0,0,0.14);
  --glass:        rgba(255,255,255,0.72);
  --glass-border: rgba(255,255,255,0.5);
}

[data-theme="dark"] {
  --bg:           #000000;
  --surface:      #1c1c1e;
  --surface-2:    #2c2c2e;
  --border:       rgba(255,255,255,0.08);
  --text:         #f5f5f7;
  --text-2:       #aeaeb2;
  --text-3:       #636366;
  --shadow-sm:    0 2px 8px rgba(0,0,0,0.4);
  --shadow-md:    0 8px 32px rgba(0,0,0,0.5);
  --shadow-lg:    0 24px 64px rgba(0,0,0,0.6);
  --glass:        rgba(28,28,30,0.8);
  --glass-border: rgba(255,255,255,0.08);
}

/* Mode-driven accent swap */
body[data-mode="work"]  { --accent: var(--work-color);  }
body[data-mode="short"] { --accent: var(--short-color); }
body[data-mode="long"]  { --accent: var(--long-color);  }


/* ── 2. Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg); color: var(--text);
  min-height: 100vh; overflow-x: hidden;
  transition: background 0.35s ease, color 0.35s ease;
}


/* ── 3. Background Orbs ── */
.bg-orbs { position: fixed; inset: 0; pointer-events: none; z-index: 0; overflow: hidden; }

.orb {
  position: absolute; border-radius: 50%;
  filter: blur(90px); opacity: 0.15;
  animation: orb-drift 18s ease-in-out infinite alternate;
}

.orb-1 {
  width: 560px; height: 560px;
  background: var(--accent);
  top: -160px; right: -120px;
  transition: background 0.6s ease;
}

.orb-2 {
  width: 380px; height: 380px;
  background: #1d1d1f;
  bottom: 60px; left: -100px;
  animation-delay: -7s;
}

[data-theme="dark"] .orb-2 { background: #444; }


/* ── 4. Header ── */
header {
  position: sticky; top: 0; z-index: 100;
  height: 60px; padding: 0 28px;
  display: flex; align-items: center; justify-content: space-between;
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  background: var(--glass); border-bottom: 1px solid var(--glass-border);
  transition: background 0.35s ease, border-color 0.35s ease;
}

.logo-wrap { display: flex; align-items: center; gap: 10px; animation: fade-down 0.5s ease both; }

.logo-icon {
  /* width: 34px; height: 34px; background: var(--accent);  */
  border-radius: 100%;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 2px 10px rgba(0,0,0,0.15); overflow: hidden;
  transition: transform 0.2s ease, background 0.4s ease;
  cursor: pointer; flex-shrink: 0;
}

.logo-icon:hover { transform: rotate(-6deg) scale(1.08); }
.logo-icon img { width: 44px; height: 44px; object-fit: contain; display: block; }
.logo-name { font-weight: 700; font-size: 1.1rem; letter-spacing: -0.02em; color: var(--text); }
.logo-name span { color: var(--accent); transition: color 0.4s ease; }

.header-right { display: flex; align-items: center; gap: 10px; animation: fade-down 0.5s 0.08s ease both; }

.icon-header-btn {
  width: 36px; height: 36px; border-radius: 9px;
  border: 1.5px solid var(--border); background: var(--surface-2);
  color: var(--text-2); display: flex; align-items: center;
  justify-content: center; font-size: 0.85rem; cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
}

.icon-header-btn:hover { border-color: var(--accent); color: var(--accent); }

.theme-toggle {
  position: relative; width: 44px; height: 26px; border-radius: 13px;
  background: var(--surface-2); border: 1.5px solid var(--border);
  cursor: pointer; transition: background 0.3s ease, border-color 0.3s ease;
}

.theme-toggle::after {
  content: ''; position: absolute; top: 2px; left: 2px;
  width: 18px; height: 18px; border-radius: 50%; background: var(--text-2);
  transition: transform 0.3s cubic-bezier(0.34,1.56,0.64,1), background 0.3s ease;
}

[data-theme="dark"] .theme-toggle::after { transform: translateX(18px); background: var(--accent); }

.toggle-icons {
  position: absolute; inset: 0; display: flex; align-items: center;
  justify-content: space-between; padding: 0 5px;
  pointer-events: none; font-size: 9px; color: var(--text-3);
}


/* ── 5. Main Layout ── */
main {
  position: relative; z-index: 1;
  max-width: 520px; margin: 0 auto;
  padding: 36px 20px 32px;
}


/* ── 6. Mode tabs ── */
.mode-tabs {
  display: flex; gap: 4px; margin-bottom: 24px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 14px; padding: 4px;
  animation: fade-up 0.5s ease both;
}

.mode-tab {
  flex: 1; padding: 8px 10px; border-radius: 10px;
  border: none; background: transparent;
  color: var(--text-2); font-family: 'DM Sans', sans-serif;
  font-size: 0.82rem; font-weight: 500; cursor: pointer;
  transition: background 0.25s ease, color 0.25s ease;
  white-space: nowrap;
}

.mode-tab.active {
  background: var(--accent); color: #fff;
  box-shadow: 0 2px 12px rgba(0,0,0,0.15);
  transition: background 0.4s ease;
}


/* ── 7. Timer card ── */
.timer-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 28px; padding: 32px 24px 24px;
  box-shadow: var(--shadow-md);
  display: flex; flex-direction: column; align-items: center;
  gap: 24px;
  animation: fade-up 0.6s 0.06s ease both;
  transition: background 0.35s ease, border-color 0.35s ease, box-shadow 0.3s ease;
}

.timer-card:hover { box-shadow: var(--shadow-lg); }


/* ── 8. SVG ring ── */
.ring-wrap {
  position: relative; width: 240px; height: 240px;
  flex-shrink: 0;
}

.ring-svg {
  width: 240px; height: 240px;
  transform: rotate(-90deg);
}

.ring-track {
  fill: none; stroke: var(--border); stroke-width: 10;
}

.ring-progress {
  fill: none; stroke: var(--accent); stroke-width: 10;
  stroke-linecap: round;
  transition: stroke-dashoffset 1s linear, stroke 0.4s ease;
  filter: drop-shadow(0 0 8px rgba(227,73,73,0.4));
}


/* ── 9. Timer display ── */
.timer-inner {
  position: absolute; inset: 0;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 6px;
}

.timer-display {
  font-family: 'DM Mono', monospace;
  font-size: 3.4rem; font-weight: 600;
  color: var(--text); letter-spacing: -0.02em;
  line-height: 1;
  transition: color 0.3s ease;
}

.timer-mode-label {
  font-size: 0.75rem; font-weight: 600;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--accent); transition: color 0.4s ease;
}


/* ── 10. Session dots ── */
.session-dots {
  display: flex; gap: 8px; align-items: center;
}

.session-dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--border); border: 2px solid var(--border);
  transition: background 0.3s ease, transform 0.3s cubic-bezier(0.34,1.56,0.64,1);
}

.session-dot.done {
  background: var(--accent); border-color: var(--accent);
}

.session-dot.active {
  background: transparent; border-color: var(--accent);
  transform: scale(1.3);
  box-shadow: 0 0 0 3px rgba(227,73,73,0.2);
}


/* ── 11. Timer controls ── */
.timer-controls {
  display: flex; align-items: center; gap: 16px;
}

.ctrl-btn {
  border: none; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  transition: transform 0.15s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.play-btn {
  width: 68px; height: 68px; font-size: 1.4rem;
  background: var(--accent); color: #fff;
  box-shadow: 0 6px 24px rgba(0,0,0,0.18);
  transition: background 0.4s ease, transform 0.15s ease, box-shadow 0.2s ease;
}

.play-btn:hover { transform: scale(1.06); box-shadow: 0 8px 28px rgba(0,0,0,0.22); }
.play-btn:active { transform: scale(0.96); }

.skip-btn {
  width: 44px; height: 44px; font-size: 0.9rem;
  background: var(--surface-2); color: var(--text-2);
  border: 1.5px solid var(--border);
}

.skip-btn:hover {
  background: var(--surface); color: var(--accent);
  border-color: var(--accent); transform: scale(1.05);
}

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


/* ── 12. Stats row ── */
.stats-row {
  display: flex; align-items: center; gap: 0;
  width: 100%; background: var(--surface-2);
  border: 1px solid var(--border); border-radius: 14px;
  overflow: hidden;
}

.stat-item {
  flex: 1; display: flex; flex-direction: column;
  align-items: center; gap: 3px; padding: 12px 8px;
}

.stat-val {
  font-family: 'DM Mono', monospace;
  font-size: 1.1rem; font-weight: 600; color: var(--text);
  transition: color 0.3s ease;
}

.stat-label {
  font-size: 0.65rem; font-weight: 600;
  letter-spacing: 0.07em; text-transform: uppercase;
  color: var(--text-3);
}

.stat-divider {
  width: 1px; height: 36px; background: var(--border);
}


/* ── 13. Current task input ── */
.current-task-wrap {
  margin-top: 20px;
  animation: fade-up 0.6s 0.12s ease both;
}

.current-task-label {
  font-size: 0.68rem; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--text-3); margin-bottom: 8px;
}

.current-task-input {
  width: 100%; padding: 13px 16px;
  border-radius: 14px; border: 1.5px solid var(--border);
  background: var(--surface); color: var(--text);
  font-family: 'DM Sans', sans-serif; font-size: 0.95rem; font-weight: 500;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.current-task-input::placeholder { color: var(--text-3); font-weight: 400; }

.current-task-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(227,73,73,0.12);
}


/* ── 14. Task section ── */
.task-section {
  margin-top: 24px;
  animation: fade-up 0.6s 0.18s ease both;
}

.task-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 12px;
}

.section-label {
  font-size: 0.68rem; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-3);
}

.btn-text {
  background: none; border: none; font-family: 'DM Sans', sans-serif;
  font-size: 0.75rem; font-weight: 500; color: var(--text-3);
  cursor: pointer; transition: color 0.2s ease;
}

.btn-text:hover { color: var(--accent); }

.task-add-row {
  display: flex; gap: 8px; margin-bottom: 10px;
}

.task-input {
  flex: 1; padding: 11px 14px;
  border-radius: 12px; border: 1.5px solid var(--border);
  background: var(--surface); color: var(--text);
  font-family: 'DM Sans', sans-serif; font-size: 0.88rem;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.task-input::placeholder { color: var(--text-3); }

.task-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(227,73,73,0.1);
}

.btn-add-task {
  width: 42px; height: 42px; border-radius: 12px;
  border: none; background: var(--accent); color: #fff;
  font-size: 0.9rem; cursor: pointer; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 3px 12px var(--red-glow);
  transition: background 0.2s ease, transform 0.15s ease;
}

.btn-add-task:hover { background: var(--red-dim); transform: scale(1.05); }
.btn-add-task:active { transform: scale(0.96); }


/* ── 15. Task list & items ── */
.task-list {
  display: flex; flex-direction: column; gap: 6px;
}

.task-empty {
  font-size: 0.82rem; color: var(--text-3);
  text-align: center; padding: 20px 0;
}

.task-item {
  display: flex; align-items: center; gap: 10px;
  padding: 11px 14px; border-radius: 12px;
  background: var(--surface); border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  animation: task-in 0.3s cubic-bezier(0.34,1.56,0.64,1) both;
  transition: border-color 0.2s ease, opacity 0.2s ease, transform 0.2s ease;
}

.task-item:hover { border-color: var(--accent); }

.task-item.done {
  opacity: 0.5;
}

.task-item.done .task-text {
  text-decoration: line-through;
  color: var(--text-3);
}

/* Custom checkbox */
.task-check {
  width: 20px; height: 20px; border-radius: 6px;
  border: 2px solid var(--border); flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; background: var(--surface-2);
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.15s ease;
}

.task-check:hover { border-color: var(--accent); transform: scale(1.1); }

.task-check.checked {
  background: var(--accent); border-color: var(--accent);
  color: #fff; font-size: 0.65rem;
}

.task-text {
  flex: 1; font-size: 0.88rem; color: var(--text);
  line-height: 1.4; word-break: break-word;
  transition: color 0.2s ease, text-decoration 0.2s ease;
}

.task-remove {
  width: 28px; height: 28px; border-radius: 7px; flex-shrink: 0;
  border: none; background: transparent; color: var(--text-3);
  font-size: 0.72rem; cursor: pointer; opacity: 0;
  display: flex; align-items: center; justify-content: center;
  transition: opacity 0.15s ease, color 0.15s ease, background 0.15s ease;
}

.task-item:hover .task-remove { opacity: 1; }
.task-remove:hover { color: var(--accent); background: var(--surface-2); }

/* Pomodoro count badge per task */
.task-pomo-count {
  font-size: 0.65rem; font-weight: 600; color: var(--text-3);
  font-family: 'DM Mono', monospace; white-space: nowrap; flex-shrink: 0;
}

.task-pomo-count i { color: var(--accent); font-size: 0.6rem; }


/* ── 16. Settings modal ── */
.modal-backdrop {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(0,0,0,0.4);
  backdrop-filter: blur(6px);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none;
  transition: opacity 0.25s ease;
}

.modal-backdrop.open { opacity: 1; pointer-events: auto; }

.modal {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 24px; width: 100%; max-width: 420px;
  box-shadow: var(--shadow-lg); padding: 24px;
  transform: translateY(20px) scale(0.97);
  transition: transform 0.3s cubic-bezier(0.34,1.56,0.64,1);
  max-height: 90vh; overflow-y: auto;
}

.modal-backdrop.open .modal { transform: translateY(0) scale(1); }

.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 20px;
}

.modal-title {
  font-size: 1rem; font-weight: 700; color: var(--text);
}

.icon-btn {
  width: 32px; height: 32px; border-radius: 8px;
  border: 1.5px solid var(--border); background: var(--surface-2);
  color: var(--text-2); display: flex; align-items: center;
  justify-content: center; font-size: 0.78rem; cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.icon-btn:hover { border-color: var(--accent); color: var(--accent); }

.modal-body { display: flex; flex-direction: column; gap: 16px; }

.settings-group { display: flex; flex-direction: column; gap: 12px; }

.settings-group-label {
  font-size: 0.65rem; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-3);
}

.settings-row {
  display: flex; align-items: center; justify-content: space-between;
  font-size: 0.88rem; color: var(--text-2);
}

.setting-input {
  width: 70px; padding: 7px 10px; text-align: center;
  border-radius: 9px; border: 1.5px solid var(--border);
  background: var(--surface-2); color: var(--text);
  font-family: 'DM Mono', monospace; font-size: 0.88rem;
  outline: none; -moz-appearance: textfield;
  transition: border-color 0.2s ease;
}

.setting-input::-webkit-inner-spin-button { -webkit-appearance: none; }
.setting-input:focus { border-color: var(--accent); }

.modal-divider { height: 1px; background: var(--border); }


/* ── 17. Switch toggle ── */
.switch { position: relative; display: inline-block; flex-shrink: 0; }

.switch input { opacity: 0; width: 0; height: 0; position: absolute; }

.switch-track {
  display: block; width: 42px; height: 24px; border-radius: 12px;
  background: var(--border); cursor: pointer;
  position: relative;
  transition: background 0.3s ease;
}

.switch-track::after {
  content: ''; position: absolute;
  top: 3px; left: 3px;
  width: 18px; height: 18px; border-radius: 50%;
  background: #fff; box-shadow: 0 1px 4px rgba(0,0,0,0.2);
  transition: transform 0.3s cubic-bezier(0.34,1.56,0.64,1);
}

.switch input:checked + .switch-track { background: var(--accent); }
.switch input:checked + .switch-track::after { transform: translateX(18px); }


/* ── 18. Action Buttons ── */
.btn-action {
  display: flex; align-items: center; justify-content: center; gap: 7px;
  padding: 11px 18px; border-radius: 11px;
  border: 1.5px solid var(--border);
  background: var(--surface-2); color: var(--text);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.85rem; font-weight: 500; cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease,
              transform 0.15s ease, color 0.2s ease;
}

.btn-action:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-1px); }
.btn-action:active { transform: translateY(0); }

.btn-action.primary {
  background: var(--accent); color: #fff;
  border-color: transparent;
  box-shadow: 0 4px 14px rgba(0,0,0,0.15);
  transition: background 0.4s ease, transform 0.15s ease;
}

.btn-action.primary:hover { filter: brightness(0.92); color: #fff; }


/* ── 19. Ad Slots ── */
.ads-row {
  margin-top: 28px; display: flex; gap: 16px;
  animation: fade-up 0.6s 0.24s ease both;
}

.ad-slot {
  flex: 1; height: 90px; border-radius: 14px;
  border: 1.5px dashed var(--border);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-3); font-size: 0.75rem;
  letter-spacing: 0.05em; text-transform: uppercase;
  font-weight: 500; background: var(--surface);
}


/* ── 20. Toast ── */
.toast {
  position: fixed; bottom: 28px; left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--text); color: var(--bg);
  padding: 12px 22px; border-radius: 30px;
  font-size: 0.85rem; font-weight: 500;
  box-shadow: var(--shadow-lg); opacity: 0; z-index: 999;
  white-space: nowrap; pointer-events: none;
  transition: transform 0.35s cubic-bezier(0.34,1.56,0.64,1), opacity 0.35s ease;
}

.toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }


/* ── 21. Animations ── */
@keyframes fade-up {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0);    }
}

@keyframes fade-down {
  from { opacity: 0; transform: translateY(-12px); }
  to   { opacity: 1; transform: translateY(0);     }
}

@keyframes orb-drift {
  from { transform: translate(0,0) scale(1); }
  to   { transform: translate(30px,40px) scale(1.12); }
}

@keyframes task-in {
  from { opacity: 0; transform: translateY(8px) scale(0.98); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* Tick animation on play button */
@keyframes pomo-pulse {
  0%,100% { box-shadow: 0 6px 24px rgba(0,0,0,0.18); }
  50%      { box-shadow: 0 6px 32px rgba(227,73,73,0.4); }
}

.play-btn.running { animation: pomo-pulse 2s ease-in-out infinite; }


/* ── 22. Responsive ── */
@media (max-width: 560px) {
  main { padding: 24px 14px 24px; }
  header { padding: 0 16px; }
  .ring-wrap { width: 200px; height: 200px; }
  .ring-svg  { width: 200px; height: 200px; }
  .timer-display { font-size: 2.8rem; }
  .play-btn  { width: 60px; height: 60px; font-size: 1.2rem; }
  .skip-btn  { width: 40px; height: 40px; }
  .ads-row   { flex-direction: column; }
  .ad-slot   { height: 60px; }
}

@media (max-width: 380px) {
  .hero h1 { font-size: 1.6rem; }
  .ring-wrap { width: 180px; height: 180px; }
  .ring-svg  { width: 180px; height: 180px; }
  .timer-display { font-size: 2.4rem; }
  .mode-tab  { font-size: 0.74rem; padding: 7px 6px; }
  .logo-name { font-size: 0.95rem; }
  /* .logo-icon { width: 28px; height: 28px; } */
  .logo-icon img { width: 28px; height: 28px; }
  .modal     { padding: 18px; }
}

@media (max-width: 300px) {
  header { padding: 0 10px; height: 52px; }
  main   { padding: 16px 10px 20px; }
  .ring-wrap { width: 160px; height: 160px; }
  .ring-svg  { width: 160px; height: 160px; }
  .timer-display { font-size: 2rem; }
  .mode-tabs { gap: 2px; padding: 3px; }
  .mode-tab  { font-size: 0.68rem; padding: 6px 4px; border-radius: 8px; }
  .play-btn  { width: 54px; height: 54px; font-size: 1rem; }
  .skip-btn  { width: 36px; height: 36px; font-size: 0.78rem; }
  .stats-row { border-radius: 10px; }
  .stat-val  { font-size: 0.9rem; }
  .stat-label { font-size: 0.58rem; }
  .logo-name { font-size: 0.82rem; }
  /* .logo-icon { width: 26px; height: 26px; border-radius: 7px; } */
  .logo-icon img { width: 26px; height: 26px; }
  .theme-toggle { width: 38px; height: 22px; }
  .theme-toggle::after { width: 15px; height: 15px; }
  [data-theme="dark"] .theme-toggle::after { transform: translateX(13px); }
  .icon-header-btn { width: 30px; height: 30px; font-size: 0.75rem; }
  .toast { font-size: 0.7rem; padding: 8px 12px; white-space: normal; text-align: center; max-width: 90vw; }
  .ad-slot { display: none; }
}