:root {
  --bg: #f4f6fb;
  --bg-alt: #e8edf6;
  --surface: #ffffff;
  --surface-soft: #eef2f8;
  --text: #1e2533;
  --muted: #5f687a;
  --border: #d8dfeb;
  --primary: #2c4ea2;
  --primary-strong: #223f85;
  --primary-soft: #e6edfb;
  --dark-surface: #1b2433;
  --dark-border: #354157;
  --success: #17724f;
  --success-bg: #e8f6ef;
  --danger: #aa4343;
  --danger-bg: #faecec;
  --radius-lg: 1.25rem;
  --radius-sm: 0.9rem;
  --shadow: 0 10px 24px rgba(15, 23, 42, 0.08);
  --font-body: Verdana, Geneva, Tahoma, sans-serif;
  --font-display: "Trebuchet MS", "Segoe UI", Tahoma, sans-serif;
  --font-ui: Tahoma, "Segoe UI", Verdana, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: linear-gradient(180deg, var(--bg), var(--bg-alt));
  color: var(--text);
  font-family: var(--font-body);
}

body.dark {
  --bg: #0f1622;
  --bg-alt: #152032;
  --surface: #182131;
  --surface-soft: #212c40;
  --text: #f3f5fb;
  --muted: #b9c2d3;
  --border: #344258;
  --primary: #6e8ee7;
  --primary-strong: #5a7bdf;
  --primary-soft: #263450;
  --success: #9be2c2;
  --success-bg: #18362c;
  --danger: #efb3b3;
  --danger-bg: #442525;
  --shadow: 0 14px 28px rgba(0, 0, 0, 0.28);
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

button,
input,
select {
  font: inherit;
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1,
h2,
.metric-value,
.streak-num,
.schedule-time,
.priority-rank,
.timer-core strong,
.streak-display strong {
  font-family: var(--font-display);
}

.nav-link,
.button,
.header-cta,
.mode-toggle,
.mini-btn,
.form-btn,
.pill,
.task-badge,
.badge-state,
.field-title,
.metric-label,
.meta-label,
.timer-label,
.foot-title,
.streak-day,
.eyebrow {
  font-family: var(--font-ui);
}

.page-shell {
  width:98%;
  margin: 0 auto;
  padding: 1.25rem 0 3rem;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.brand-logo {
  width: clamp(10rem, 22vw, 14rem);
  height: auto;
}

.site-nav,
.header-tools {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.site-nav {
  padding: 0.45rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.45);
}

.nav-link,
.button,
.header-cta,
.mode-toggle,
.mini-btn,
.form-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.9rem;
  padding: 0.75rem 1.1rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 700;
  transition: background-color 180ms ease, border-color 180ms ease,
    color 180ms ease, transform 180ms ease;
}

.nav-link {
  color: var(--muted);
}

.nav-link:hover,
.nav-link:focus-visible,
.button:hover,
.button:focus-visible,
.header-cta:hover,
.header-cta:focus-visible,
.mode-toggle:hover,
.mode-toggle:focus-visible,
.mini-btn:hover,
.mini-btn:focus-visible,
.form-btn:hover,
.form-btn:focus-visible {
  transform: translateY(-1px);
}

.nav-link.active,
.button-main,
.header-cta,
.form-main {
  color: #ffffff;
  background: var(--primary);
  border-color: var(--primary);
}

.button-ghost,
.mode-toggle,
.mini-btn.ghost {
  color: var(--text);
  background: var(--surface-soft);
  border-color: var(--border);
}

.streak-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  min-height: 2.9rem;
  padding: 0.65rem 0.95rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface-soft);
}

.streak-num {
  font-size: 1.3rem;
  line-height: 1;
}

.streak-day {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--muted);
}

.hero,
.content-grid,
.hero-summary,
.metric-grid,
.schedule-list,
.spotlight-stack,
.badge-grid,
.foot-grid,
.foot-brand,
.foot-block,
.foot-links,
.foot-tags,
.auth-top,
.auth-form,
.field,
.field-row,
.task-form,
.session-meta,
.week-track {
  display: grid;
}

.hero {
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  gap: 1.25rem;
  align-items: start;
  margin-bottom: 1.25rem;
}

.hero-copy,
.hero-summary {
  gap: 1rem;
}

.hero-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.eyebrow {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--primary);
}

.light-eye {
  color: rgba(255, 255, 255, 0.78);
}

h1 {
  font-size: clamp(2rem, 5vw, 4.5rem);
  line-height: 1;
}

h2 {
  font-size: clamp(1.65rem, 3vw, 2.4rem);
  line-height: 1.05;
}

h3 {
  font-size: 1.05rem;
}

p {
  line-height: 1.6;
}

.panel-note,
.priority-item p,
.schedule-card p,
.badge-card p,
.spotlight-card p,
.foot-note,
.auth-note {
  color: var(--muted);
}

.metric-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.metric-card,
.panel,
.site-footer,
.schedule-card,
.task-empty,
.badge-card,
.spotlight-card,
.auth-status {
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.metric-card {
  padding: 1.15rem;
  border-radius: var(--radius-lg);
}

.metric-main {
  background: var(--primary);
  border-color: var(--primary);
  color: #ffffff;
}

.metric-label,
.timer-label,
.meta-label,
.foot-title,
.field-title {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.metric-value {
  font-size: clamp(2.2rem, 4vw, 3.5rem);
  line-height: 1;
}

.content-grid {
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 1.25rem;
}

.span-4 {
  grid-column: span 4;
}

.span-5 {
  grid-column: span 5;
}

.span-7 {
  grid-column: span 7;
}

.span-8 {
  grid-column: span 8;
}

.span-12 {
  grid-column: span 12;
}

.panel {
  gap: 1.25rem;
  padding: 1.5rem;
  border-radius: var(--radius-lg);
}

.panel-dark {
  background: var(--dark-surface);
  border-color: var(--dark-border);
  color: #ffffff;
}

.panel-violet {
  background: var(--primary);
  border-color: var(--primary);
  color: #ffffff;
}

.panel-heading {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 1rem;
}

.pill,
.task-badge,
.badge-state {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.45rem 0.8rem;
  border-radius: 999px;
  font-size: 0.74rem;
  font-weight: 700;
}

.pill {
  color: var(--primary);
  background: var(--primary-soft);
  border: 1px solid var(--border);
}

.pill-light,
.line-pill {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.2);
}

.task-form {
  grid-template-columns: minmax(0, 1.4fr) repeat(2, minmax(0, 0.85fr)) auto;
  gap: 0.75rem;
}

.field-row {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.auth-single-row {
  grid-template-columns: 1fr;
}

.field,
.auth-form {
  gap: 0.55rem;
}

.input-box {
  width: 100%;
  min-height: 3.15rem;
  padding: 0.85rem 1rem;
  color: var(--text);
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.input-box::placeholder {
  color: var(--muted);
}

.input-box:focus {
  outline: none;
  border-color: var(--primary);
}

.panel-dark .field-title,
.panel-violet .field-title,
.panel-violet .timer-label,
.panel-violet .meta-label,
.panel-violet .panel-note,
.panel-dark .panel-note,
.panel-dark .priority-item p,
.panel-dark .spotlight-card p {
  color: rgba(255, 255, 255, 0.82);
}

.panel-dark .input-box,
.panel-violet .input-box {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.18);
}

.panel-dark .input-box::placeholder,
.panel-violet .input-box::placeholder {
  color: rgba(255, 255, 255, 0.7);
}

.schedule-list,
.spotlight-stack {
  gap: 1rem;
}

.priority-list {
  display: grid;
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.schedule-item {
  display: grid;
  grid-template-columns: 4rem 1fr;
  gap: 0.85rem;
  align-items: start;
}

.schedule-time {
  padding-top: 0.8rem;
  font-size: 1.5rem;
  color: var(--primary);
}

.schedule-card,
.priority-item,
.badge-card,
.spotlight-card {
  border-radius: var(--radius-lg);
}

.schedule-card,
.priority-item,
.spotlight-card {
  padding: 1rem;
}

.schedule-card {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 1rem;
}

.priority-item,
.spotlight-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.task-copy {
  min-width: 0;
}

.task-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.task-badge,
.badge-state {
  border: 1px solid var(--border);
}

.task-badge {
  color: var(--primary);
  background: var(--primary-soft);
}

.badge-high {
  color: #ffffff;
  background: var(--primary);
  border-color: var(--primary);
}

.badge-calm {
  color: var(--text);
  background: var(--surface-soft);
}

.priority-rank {
  font-size: 1.6rem;
  color: rgba(255, 255, 255, 0.72);
}

.timer-shell {
  width: min(100%, 18rem);
  aspect-ratio: 1;
  margin: 0 auto;
  padding: 1rem;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: conic-gradient(#ffffff 0 76%, rgba(255, 255, 255, 0.14) 76% 100%);
}

.timer-core {
  width: 100%;
  height: 100%;
  padding: 1rem;
  border-radius: 50%;
  display: grid;
  place-items: center;
  text-align: center;
  gap: 0.35rem;
  background: rgba(18, 26, 40, 0.85);
  color: #ffffff;
}

.timer-core strong {
  font-size: clamp(2.8rem, 7vw, 4.5rem);
  line-height: 1;
}

.session-meta {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
}

.session-meta > div {
  padding: 0.9rem;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.12);
}

.streak-display {
  display: grid;
  gap: 0.2rem;
}

.streak-display strong {
  font-size: clamp(3.5rem, 7vw, 5rem);
  line-height: 1;
  color: var(--primary);
}

.streak-display span {
  color: var(--muted);
  font-weight: 700;
}

.week-track {
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 0.6rem;
}

.day-box {
  min-height: 2.5rem;
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
  background: var(--surface-soft);
}

.day-box.active {
  color: #ffffff;
  background: var(--primary);
  border-color: var(--primary);
}

.badge-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.badge-card {
  gap: 0.75rem;
  padding: 1rem;
}

.badge-card.locked {
  opacity: 0.72;
}

.badge-card.locked .badge-mark {
  filter: grayscale(1);
}

.badge-mark {
  width: 3.5rem;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border-radius: 1rem;
  border: 1px solid rgba(0, 0, 0, 0.08);
  background: var(--surface-soft);
}

.badge-mark img {
  width: 2rem;
  height: 2rem;
  object-fit: contain;
}

.badge-state {
  width: fit-content;
  color: var(--primary);
  background: var(--primary-soft);
}

.progress-bar {
  width: 100%;
  height: 0.75rem;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.15);
}

.progress-bar span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: rgba(255, 255, 255, 0.85);
}

.bar-light {
  background: rgba(44, 78, 162, 0.15);
}

.bar-light span {
  background: var(--primary);
}

.task-empty {
  padding: 1rem;
  border-style: dashed;
}

.site-footer {
  margin-top: 2rem;
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  background: var(--dark-surface);
  border-color: var(--dark-border);
  color: #ffffff;
}

.foot-grid {
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 1.25rem;
  align-items: start;
}

.foot-brand,
.foot-block,
.foot-links,
.foot-tags {
  gap: 0.75rem;
}

.foot-title {
  color: rgba(255, 255, 255, 0.72);
}

.foot-note {
  color: rgba(255, 255, 255, 0.76);
}

.foot-links a {
  color: rgba(255, 255, 255, 0.92);
}

.foot-tags {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.foot-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.45rem 0.75rem;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  font-size: 0.84rem;
  font-weight: 700;
}

.auth-top {
  width: min(760px, 100%);
  gap: 0.9rem;
  margin: 0 auto 1.25rem;
}

.auth-status {
  padding: 0.95rem 1rem;
  border-radius: var(--radius-sm);
  background: var(--surface-soft);
}

.auth-status.success {
  color: var(--success);
  background: var(--success-bg);
  border-color: transparent;
}

.auth-status.error {
  color: var(--danger);
  background: var(--danger-bg);
  border-color: transparent;
}

.reveal {
  opacity: 1;
}

@media (max-width: 960px) {
  .hero,
  .span-4,
  .span-5,
  .span-7,
  .span-8 {
    grid-column: span 12;
  }

  .hero {
    grid-template-columns: 1fr;
  }

  .task-form {
    grid-template-columns: 1fr 1fr;
  }

  .task-form .button {
    grid-column: 1 / -1;
  }

  .badge-grid,
  .foot-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .page-shell {
    width: calc(100% - 1rem);
  }

  .site-nav,
  .header-tools {
    display: grid;
    width: 100%;
  }

  .site-nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .site-nav,
  .header-tools,
  .metric-grid,
  .session-meta,
  .badge-grid,
  .field-row,
  .task-form,
  .foot-grid {
    grid-template-columns: 1fr;
  }

  .nav-link,
  .header-cta,
  .button,
  .mode-toggle,
  .streak-chip {
    width: 100%;
  }

  .schedule-item {
    grid-template-columns: 1fr;
    gap: 0.6rem;
  }

  .schedule-time {
    padding-top: 0;
  }

  .schedule-card,
  .task-actions {
    align-items: start;
  }

  .schedule-card,
  .task-actions,
  .hero-actions {
    flex-direction: column;
  }

  .task-actions,
  .hero-actions > * {
    width: 100%;
  }
}