:root {
  --bg-main: #14151a;       /* deep charcoal, softer than pure black */
  --bg-card: #1e1f26;       /* card/section background */
  --bg-elevated: #26272f;   /* buttons, elevated surfaces */
  --text-primary: #e8e6e3;  /* warm off-white, easier on eyes than pure white */
  --text-heading: #ffffff;
  --text-muted: #8b8d94;    /* muted gray for secondary text */
  --accent: #ff6b5e;   
  --accent-hover: #ff8c7e;
  --border: #2e2f38;
}

* {
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-primary);
  margin: 0;
  overflow-x: hidden;
}

/* Header */
.header {
  padding: 1rem 1.5rem;
}

.header > div {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header nav {
  display: flex;
  gap: 1.5rem;
}

.header nav div {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
}

.header nav ion-icon {
  font-size: 30px;
}

.panel-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.6);
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.panel-overlay.open {
  display: flex;
}

.panel {
  background-color: var(--bg-card);
  border-radius: 12px;
  width: 90%;
  max-width: 360px;
  padding: 1.5rem;
  border: 1px solid var(--border);
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.2rem;
}

.panel-header h3 {
  color: var(--text-heading);
  font-size: 1.2rem;
  margin: 0;
}

.close-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
}

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

.panel-label {
  display: block;
  color: var(--text-muted);
  font-size: 0.85rem;
  margin: 1rem 0 0.4rem;
}

.panel-input {
  width: 100%;
  background-color: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 0.6rem 0.8rem;
  border-radius: 6px;
  font-size: 0.95rem;
}

.save-btn {
  width: 100%;
  background-color: var(--accent);
  color: #fff;
  border: none;
  padding: 0.8rem;
  border-radius: 6px;
  margin-top: 1.5rem;
  cursor: pointer;
  font-weight: 600;
}

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

.task-input-row {
  display: flex;
  gap: 0.5rem;
}

.add-task-btn {
  background-color: var(--accent);
  color: #fff;
  border: none;
  padding: 0.6rem 1rem;
  border-radius: 6px;
  cursor: pointer;
}

.task-list {
  list-style: none;
  padding: 0;
  margin-top: 1rem;
  max-height: 220px;
  overflow-y: auto;
}

.task-list li {
  background-color: var(--bg-elevated);
  padding: 0.6rem 0.8rem;
  border-radius: 6px;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
  font-size: 0.9rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.delete-task-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.1rem;
  cursor: pointer;
}

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

.pt-div {
  text-align: center;
  padding: 2rem 1rem 1rem;
}

.pt {
  color: var(--text-heading);
  font-size: 1.8rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
}

.pt-note {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin: 0;
}

/* FSL */
.tabs {
  display: flex;
  gap: 0.5rem;
  background-color: var(--bg-card);
  padding: 0.4rem;
  border-radius: 8px;
  width: fit-content;
  margin: 1.5rem auto;
}

.tab {
  background: none;
  border: none;
  color: var(--text-muted);
  padding: 0.6rem 1.2rem;
  border-radius: 6px;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s ease-in-out;
}

.tab:hover {
  color: var(--text-primary);
}

.tab.active {
  background-color: var(--bg-elevated);
  color: var(--accent);
  font-weight: 600;
}

/* Timer Wrapper */
.timer-display-wrap {
  display: flex;
  justify-content: center;
  margin: 2rem 0;
}

.timer-display {
  background-color: var(--bg-card);
  color: var(--text-heading);
  font-size: 4rem;
  font-weight: 700;
  padding: 2rem 3rem;
  border-radius: 50%;
  border: 2px solid var(--border);
  width: 260px;
  height: 260px;
  cursor: default;
}

.timer-controls {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 2rem;
}

.control-btn {
  padding: 0.8rem 2rem;
  border-radius: 8px;
  font-size: 1rem;
  cursor: pointer;
  border: none;
  transition: all 0.2s ease-in-out;
}

.start-btn {
  background-color: var(--accent);
  color: #fff;
}

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

.reset-btn {
  background-color: var(--bg-elevated);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

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

.preset-buttons {
  display: flex;
  justify-content: center;
  gap: 0.8rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.preset-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 0.5rem 1rem;
  border-radius: 6px;
  font-size: 0.85rem;
  transition: all 0.2s ease-in-out;
}



/* Info Block */

.info-block {
  max-width: 640px;
  margin: 0 auto 3rem;
  padding: 0 1.5rem;
}

.info-block h3,
.info-block h4,
.info-block h5 {
  color: var(--text-heading);
  margin-bottom: 0.8rem;
}

.info-block h3 {
  font-size: 1.4rem;
}

.info-block h4 {
  font-size: 1.2rem;
}

.info-block h5 {
  font-size: 1.1rem;
}

.info-block p {
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 1rem;
}

.info-block ul {
  color: var(--text-muted);
  line-height: 1.8;
  padding-left: 1.2rem;
}

.info-block li {
  margin-bottom: 0.4rem;
}

/* Cta Block */

.cta-block {
  text-align: center;
  padding: 3rem 1.5rem 4rem;
}

.cta-text {
  color: var(--text-muted);
  font-size: 1.1rem;
  margin-bottom: 1.2rem;
}

.cta-btn {
  background-color: var(--accent);
  color: #fff;
  border: none;
  padding: 1rem 2.5rem;
  border-radius: 8px;
  font-size: 1.05rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease-in-out;
}

.cta-btn:hover {
  background-color: var(--accent-hover);
  transform: translateY(-2px);
}

/* FAQ */

.faq {
  max-width: 700px;
  margin: 0 auto;
}

details {
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 1rem;
  margin-bottom: 1rem;
}

summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
}

details:hover {
  color: var(--text-primary);
}

summary::-webkit-details-marker {
  display: none;
}

summary::after {
  content: "+";
  float: right;
  font-size: 1.2rem;
}

details[open] summary::after {
  content: "−";
}

details p {
  margin-top: 1rem;
  line-height: 1.6;
}

.contact-btn {
  display: inline-block;
  padding: 12px 24px;
  background-color: var(--accent);
  color: white;
  border-radius: 8px;
  text-decoration: none;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.contact-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

/* RESPONSIVE DESIGN */

@media (max-width: 768px) {
  .timer-display {
    width: 220px;
    height: 220px;
    font-size: 3.2rem;
    padding: 1.5rem;
  }

  .info-block,
  .faq {
    padding: 0 1.2rem;
  }
}

@media (max-width: 480px) {
  .header nav {
    gap: 1rem;
  }

  .header nav ion-icon {
    font-size: 18px;
  }

  .pt {
    font-size: 1.4rem;
  }

  .tabs {
    flex-wrap: wrap;
    justify-content: center;
    width: 100%;
    max-width: 320px;
  }

  .tab {
    padding: 0.5rem 0.9rem;
    font-size: 0.8rem;
  }

  .timer-display {
    width: 180px;
    height: 180px;
    font-size: 2.5rem;
    padding: 1rem;
  }

  .timer-controls {
    flex-wrap: wrap;
  }

  .control-btn {
    padding: 0.7rem 1.5rem;
    font-size: 0.9rem;
  }

  .preset-buttons {
    flex-direction: column;
    align-items: center;
  }

  .preset-btn {
    width: 100%;
    max-width: 240px;
    text-align: center;
  }

  .info-block h3 {
    font-size: 1.2rem;
  }

  .info-block h4 {
    font-size: 1.1rem;
  }

  .info-block p,
  .info-block li {
    font-size: 0.9rem;
  }

  .cta-text {
    font-size: 0.95rem;
  }

  .cta-btn {
    width: 100%;
    max-width: 280px;
    padding: 0.9rem 1.5rem;
  }

  .panel {
    width: 92%;
    padding: 1.2rem;
  }

  .faq {
    padding: 0 1rem;
  }

  details {
    padding: 0.8rem;
  }
}