/* ─── RESET & BASE ─────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #0f1117;
  --bg2:       #1a1d27;
  --bg3:       #22263a;
  --border:    #2e3350;
  --accent:    #6c63ff;
  --accent2:   #a78bfa;
  --green:     #22c55e;
  --yellow:    #f59e0b;
  --red:       #ef4444;
  --text:      #e8eaf6;
  --text2:     #8b92b8;
  --text3:     #545878;
  --nav-h:     68px;
  --radius:    16px;
  --radius-sm: 10px;
}

body.light {
  --bg:        #f4f6fb;
  --bg2:       #ffffff;
  --bg3:       #eef0f7;
  --border:    #d4d8ec;
  --accent:    #6c63ff;
  --accent2:   #5b52e0;
  --green:     #16a34a;
  --yellow:    #d97706;
  --red:       #dc2626;
  --text:      #1a1d2e;
  --text2:     #555878;
  --text3:     #9096b8;
}

/* ─── THEME TOGGLE — zdefiniowany niżej przy headerze ─────────────────────── */

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  overflow: hidden;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

button { cursor: pointer; border: none; outline: none; background: none; font-family: inherit; }
input  { font-family: inherit; color: var(--text); outline: none; border: none; background: none; }

/* ─── SCREENS ──────────────────────────────────────────────────────────────── */
.screen {
  display: none;
  flex-direction: column;
  height: calc(100dvh - var(--nav-h));
  overflow-y: auto;
  padding: 20px 16px 24px;
  max-width: 420px;
  margin-left: auto;
  margin-right: auto;
  width: 100%;
}
.screen.active { display: flex; }

/* ─── BOTTOM NAV ───────────────────────────────────────────────────────────── */
.bottom-nav {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  height: var(--nav-h);
  background: var(--bg2);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 8px;
  z-index: 100;
}

/* Wewnętrzny wrapper nawy — wyśrodkowany jak treść */
.nav-inner {
  display: flex;
  width: 100%;
  max-width: 420px;
  margin: 0 auto;
}

.nav-btn {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 8px 4px;
  border-radius: var(--radius-sm);
  transition: all .2s;
  color: var(--text3);
}
.nav-btn.active { color: var(--accent2); }
.nav-icon { font-size: 22px; line-height: 1; }
.nav-label { font-size: 11px; font-weight: 500; letter-spacing: .3px; }

/* ─── HEADER ───────────────────────────────────────────────────────────────── */
.screen-header {
  margin-bottom: 8px;
  flex-shrink: 0;
}

.header-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 14px;
  gap: 16px;
  width: 100%;
}

.header-left {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.header-weekday {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  text-transform: capitalize;
}

.header-date {
  font-size: 15px;
  color: var(--text2);
}

.header-center {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.header-right {
  flex: 1;
  display: flex;
  justify-content: flex-end;
  align-items: flex-start;
  padding-top: 2px;
}

.day-badge {
  display: inline-block;
  font-size: 18px;
  font-weight: 800;
  padding: 8px 20px;
  border-radius: 20px;
  letter-spacing: .5px;
  white-space: nowrap;
}
.day-A { background: rgba(108,99,255,.2); color: var(--accent2); border: 1px solid rgba(108,99,255,.4); }
.day-B { background: rgba(245,158,11,.15); color: #fbbf24; border: 1px solid rgba(245,158,11,.35); }

.day-switch-btn {
  font-size: 15px;
  font-weight: 600;
  color: var(--text2);
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 8px 18px;
  transition: all .2s;
}
.day-switch-btn:active { transform: scale(.95); }

.screen-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
}

/* ─── THEME TOGGLE ─────────────────────────────────────────────────────────── */
.theme-toggle {
  width: 52px; height: 52px;
  border-radius: var(--radius-sm);
  background: var(--bg3);
  border: 1px solid var(--border);
  font-size: 24px;
  display: flex; align-items: center; justify-content: center;
  transition: all .2s;
  cursor: pointer;
}
.theme-toggle:active { transform: scale(.93); }

/* Progress bar */
.progress-bar-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  margin-top: 12px;
}
.progress-bar-track {
  flex: 1;
  height: 6px;
  background: var(--bg3);
  border-radius: 10px;
  overflow: hidden;
}
.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  border-radius: 10px;
  transition: width .4s ease;
}
.progress-label {
  font-size: 13px;
  color: var(--text2);
  white-space: nowrap;
  min-width: 48px;
  text-align: right;
}

/* ─── CARD AREA ────────────────────────────────────────────────────────────── */
.card-area {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px 0;
  width: 100%;
}

.exercise-card {
  width: 100%;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 28px 24px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: all .3s;
  position: relative;
}
.exercise-card.done {
  border-color: var(--green);
  background: rgba(34,197,94,.07);
}

.card-top {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.card-group-badge {
  font-size: 11px;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: 20px;
  letter-spacing: .4px;
}
.group-A { background: rgba(108,99,255,.18); color: var(--accent2); }
.group-B { background: rgba(245,158,11,.15); color: #fbbf24; }

.postponed-badge {
  font-size: 11px;
  padding: 2px 10px;
  border-radius: 20px;
  background: rgba(245,158,11,.15);
  color: #fbbf24;
  letter-spacing: .3px;
}

.card-name {
  font-size: 28px;
  font-weight: 800;
  color: var(--text);
  line-height: 1.2;
}

.card-value {
  font-size: 18px;
  color: var(--accent2);
  font-weight: 600;
}

.card-note {
  font-size: 13px;
  color: var(--text2);
  background: var(--bg3);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  line-height: 1.4;
}

.card-actions {
  display: flex;
  gap: 10px;
  margin-top: 8px;
}

.btn-done {
  flex: 2;
  padding: 14px;
  border-radius: var(--radius-sm);
  font-size: 16px;
  font-weight: 700;
  background: var(--bg3);
  color: var(--text2);
  border: 1px solid var(--border);
  transition: all .2s;
}
.btn-done:active { transform: scale(.97); }
.btn-done-active {
  background: rgba(34,197,94,.15);
  color: var(--green);
  border-color: var(--green);
}

.btn-postpone {
  flex: 1;
  padding: 14px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  background: var(--bg3);
  color: var(--text2);
  border: 1px solid var(--border);
  transition: all .2s;
}
.btn-postpone:active { transform: scale(.97); }
.btn-postpone:disabled { opacity: .35; cursor: not-allowed; }

/* Empty card */
.empty-card {
  text-align: center;
  padding: 40px 20px;
}
.empty-icon { font-size: 56px; margin-bottom: 16px; }
.empty-title { font-size: 20px; font-weight: 700; margin-bottom: 8px; }
.empty-sub { font-size: 14px; color: var(--text2); line-height: 1.6; }

/* ─── CARD NAV DOTS ────────────────────────────────────────────────────────── */
.card-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0 0;
  flex-shrink: 0;
  width: 100%;
}

.card-nav-btn {
  width: 54px; height: 54px;
  border-radius: 50%;
  background: var(--bg2);
  border: 2px solid var(--accent);
  font-size: 26px;
  color: var(--accent2);
  display: flex; align-items: center; justify-content: center;
  transition: all .2s;
  box-shadow: 0 0 12px rgba(108,99,255,.2);
}
.card-nav-btn:active { background: var(--bg3); transform: scale(.93); }

.card-dots {
  display: flex;
  gap: 7px;
  align-items: center;
}
.dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--bg3);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all .2s;
}
.dot-active {
  background: var(--accent);
  border-color: var(--accent);
  width: 22px;
  border-radius: 4px;
}

/* ─── EXERCISES SCREEN ─────────────────────────────────────────────────────── */
.add-btn {
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  padding: 8px 18px;
  border-radius: 20px;
  transition: all .2s;
}
.add-btn:active { transform: scale(.96); opacity: .85; }

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

.group-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}
.group-tab {
  flex: 1;
  padding: 10px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  background: var(--bg2);
  border: 1px solid var(--border);
  color: var(--text2);
  transition: all .2s;
}
.group-tab.active {
  background: rgba(108,99,255,.2);
  color: var(--accent2);
  border-color: var(--accent);
}

.exercise-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.ex-row {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.ex-info { flex: 1; min-width: 0; }
.ex-name { font-size: 16px; font-weight: 700; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ex-meta { font-size: 13px; color: var(--text2); margin-top: 2px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ex-btns { display: flex; gap: 6px; flex-shrink: 0; }

.icon-btn {
  width: 38px; height: 38px;
  border-radius: var(--radius-sm);
  background: var(--bg3);
  border: 1px solid var(--border);
  font-size: 16px;
  display: flex; align-items: center; justify-content: center;
  transition: all .2s;
}
.icon-btn:active { transform: scale(.93); }

.empty-list {
  text-align: center;
  padding: 48px 20px;
  color: var(--text2);
  font-size: 15px;
  line-height: 1.7;
}

/* ─── HISTORY SCREEN ───────────────────────────────────────────────────────── */
.history-content {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.history-row {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
}
.history-date {
  font-size: 13px;
  color: var(--text2);
  min-width: 54px;
  font-weight: 600;
}
.history-bar-wrap { flex: 1; }
.history-bar-track {
  height: 6px;
  background: var(--bg3);
  border-radius: 10px;
  overflow: hidden;
}
.history-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--green));
  border-radius: 10px;
}
.history-stats { display: flex; gap: 6px; font-size: 13px; flex-shrink: 0; }
.hist-done { color: var(--green); font-weight: 700; }
.hist-post { color: #fbbf24; font-weight: 600; }

/* ─── MODALS ───────────────────────────────────────────────────────────────── */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.7);
  z-index: 200;
  align-items: flex-end;
  justify-content: center;
  padding: 0;
}
.modal-overlay.open {
  display: flex;
  animation: fadeIn .2s ease;
}

@keyframes fadeIn { from { opacity: 0 } to { opacity: 1 } }

.modal {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 24px 24px 0 0;
  padding: 28px 20px 36px;
  width: 100%;
  max-height: 92dvh;
  overflow-y: auto;
  animation: slideUp .25s ease;
}
.modal-small { max-height: 60dvh; }

@keyframes slideUp {
  from { transform: translateY(30px); opacity: 0 }
  to   { transform: translateY(0);    opacity: 1 }
}

.modal-title {
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 20px;
}

.modal-text {
  color: var(--text2);
  font-size: 15px;
  margin-bottom: 20px;
}

.field-label {
  display: block;
  font-size: 12px;
  font-weight: 700;
  color: var(--text2);
  text-transform: uppercase;
  letter-spacing: .6px;
  margin-bottom: 6px;
  margin-top: 16px;
}

.field-input {
  width: 100%;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 13px 14px;
  font-size: 16px;
  color: var(--text);
  transition: border-color .2s;
}
.field-input:focus { border-color: var(--accent); }

.type-toggle {
  display: flex;
  gap: 8px;
}
.type-btn {
  flex: 1;
  padding: 11px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text2);
  transition: all .2s;
}
.type-btn.active {
  background: rgba(108,99,255,.2);
  color: var(--accent2);
  border-color: var(--accent);
}

.modal-actions {
  display: flex;
  gap: 10px;
  margin-top: 24px;
}

.btn-primary {
  flex: 2;
  padding: 15px;
  border-radius: var(--radius-sm);
  font-size: 16px;
  font-weight: 700;
  background: var(--accent);
  color: #fff;
  transition: all .2s;
}
.btn-primary:active { transform: scale(.97); opacity: .85; }

.btn-secondary {
  flex: 1;
  padding: 15px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  background: var(--bg3);
  color: var(--text2);
  border: 1px solid var(--border);
}
.btn-secondary:active { transform: scale(.97); }

.btn-danger {
  flex: 2;
  padding: 15px;
  border-radius: var(--radius-sm);
  font-size: 16px;
  font-weight: 700;
  background: rgba(239,68,68,.15);
  color: var(--red);
  border: 1px solid rgba(239,68,68,.4);
}
.btn-danger:active { transform: scale(.97); }

/* ─── TOAST ────────────────────────────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: calc(var(--nav-h) + 14px);
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 11px 22px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 600;
  opacity: 0;
  pointer-events: none;
  transition: all .3s;
  white-space: nowrap;
  z-index: 300;
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ─── SCROLLBAR ────────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

/* ─── TIMER ────────────────────────────────────────────────────────────────── */
.timer-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin: 4px 0 8px;
}

.timer-ring-wrap {
  position: relative;
  width: 110px; height: 110px;
}

.timer-ring {
  transform: rotate(-90deg);
}

.timer-ring-bg {
  fill: none;
  stroke: var(--bg3);
  stroke-width: 7;
}

.timer-ring-fill {
  fill: none;
  stroke: var(--accent);
  stroke-width: 7;
  stroke-linecap: round;
  transition: stroke-dashoffset .4s linear, stroke .3s;
}

.timer-ring-fill.urgent {
  stroke: var(--red);
}

.timer-display {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  font-weight: 800;
  color: var(--text);
  line-height: 1;
}

.timer-display.urgent { color: var(--red); }

.timer-label {
  font-size: 11px;
  color: var(--text2);
  margin-top: 3px;
  font-weight: 500;
}

.timer-btns {
  display: flex;
  gap: 8px;
}

.btn-timer {
  padding: 9px 20px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 700;
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text2);
  transition: all .2s;
}
.btn-timer:active { transform: scale(.96); }
.btn-timer.running {
  background: rgba(108,99,255,.15);
  color: var(--accent2);
  border-color: var(--accent);
}
.btn-timer-reset {
  padding: 9px 14px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text3);
  transition: all .2s;
}
.btn-timer-reset:active { transform: scale(.96); }