:root {
  --bg-a: #090f1e;
  --bg-b: #141e36;
  --panel: rgba(13, 20, 36, 0.9);
  --panel-soft: rgba(255, 255, 255, 0.04);
  --border: rgba(255, 255, 255, 0.14);
  --text: #ebf0ff;
  --muted: #9ea8c9;
  --love: #ff4ca6;
  --accent: #5a8dff;
  --ok: #64f0b2;
  --danger: #ff8aa8;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Manrope, "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--text);
  background: radial-gradient(circle at 16% 20%, #2c6be8 0%, transparent 42%),
    radial-gradient(circle at 80% 72%, #6e3cc7 0%, transparent 37%),
    radial-gradient(circle at 50% 100%, #16254a 0%, transparent 55%),
    linear-gradient(145deg, var(--bg-a), var(--bg-b));
  overflow: auto;
}

#bg-particles {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

#fx-hearts {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 3;
  pointer-events: none;
}

.app-shell {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1.25rem;
}

.panel {
  width: min(1100px, 95vw);
  backdrop-filter: blur(12px);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: 0 22px 48px rgba(1, 4, 12, 0.5);
  padding: 1.25rem;
  transform: translateY(8px) scale(0.99);
  display: none;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.5s ease, transform 0.5s ease;
  position: relative;
}

.panel::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(130deg, rgba(90, 141, 255, 0.14), rgba(255, 76, 166, 0.1), transparent 60%);
  pointer-events: none;
}

.panel.active {
  display: block;
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

.login-card {
  max-width: 460px;
}

.brand-title {
  margin: 0;
  font-family: "Playfair Display", serif;
  font-size: clamp(2rem, 7vw, 3.4rem);
  letter-spacing: 0.05em;
  text-align: center;
}

.name-part {
  color: #f8f8ff;
}

.love {
  color: var(--love);
  text-shadow: 0 0 25px rgba(255, 76, 166, 0.65);
  animation: pulse-love 2s ease-in-out infinite;
}

@keyframes pulse-love {
  0%,
  100% {
    text-shadow: 0 0 20px rgba(255, 76, 166, 0.5);
  }
  50% {
    text-shadow: 0 0 35px rgba(255, 76, 166, 0.95);
  }
}

.eyebrow {
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 0.4rem;
}

.subtitle {
  text-align: center;
  margin: 0.5rem 0 1.4rem;
  color: #dce5ff;
}

.login-form {
  display: grid;
  gap: 0.75rem;
}

label {
  font-size: 0.9rem;
  color: var(--muted);
}

input {
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(9, 10, 30, 0.45);
  color: var(--text);
  border-radius: 12px;
  font-size: 0.98rem;
  padding: 0.8rem 0.95rem;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

textarea {
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(6, 9, 20, 0.8);
  color: var(--text);
  border-radius: 12px;
  font-size: 0.95rem;
  font-family: inherit;
  padding: 0.8rem 0.95rem;
  outline: none;
  resize: vertical;
  min-height: 110px;
}

input:focus {
  border-color: #a6a7ff;
  box-shadow: 0 0 0 3px rgba(127, 125, 255, 0.2);
}

textarea:focus {
  border-color: #8eb2ff;
  box-shadow: 0 0 0 3px rgba(90, 141, 255, 0.2);
}

.btn {
  border: 0;
  border-radius: 12px;
  padding: 0.82rem 1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.2s ease, opacity 0.2s ease;
}

.btn:active {
  transform: translateY(1px) scale(0.99);
}

.btn-primary {
  color: #fff;
  background: linear-gradient(110deg, #4b7bff, #7d53ff, #ff5aac);
  box-shadow: 0 12px 30px rgba(111, 93, 255, 0.42);
  background-size: 180% 180%;
  animation: glow-shift 5s ease infinite;
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 34px rgba(126, 96, 255, 0.6);
}

@keyframes glow-shift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

.error-text {
  color: var(--danger);
  min-height: 1.25rem;
  margin: 0;
  font-size: 0.9rem;
}

.workspace {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 1rem;
  min-height: min(86vh, 780px);
}

.sidebar {
  border: 1px solid var(--border);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.03);
  padding: 1rem;
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  gap: 1rem;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.03);
}

.sidebar-title {
  margin: 0;
  font-family: "Playfair Display", serif;
  font-size: 1.7rem;
}

.sidebar-nav {
  display: grid;
  gap: 0.55rem;
  align-content: start;
}

.nav-btn {
  border: 1px solid transparent;
  background: rgba(255, 255, 255, 0.02);
  color: #d6e0ff;
  border-radius: 10px;
  text-align: left;
  padding: 0.72rem 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.24s ease;
}

.nav-btn:hover {
  border-color: rgba(255, 255, 255, 0.18);
  background: rgba(125, 143, 255, 0.16);
  transform: translateX(2px);
}

.nav-btn.active {
  border-color: rgba(90, 141, 255, 0.7);
  background: rgba(90, 141, 255, 0.16);
}

.welcome-pill {
  display: inline-block;
  border: 1px solid rgba(255, 255, 255, 0.24);
  padding: 0.42rem 0.7rem;
  border-radius: 12px;
  font-size: 0.82rem;
  background: rgba(255, 255, 255, 0.08);
}

.content-area {
  border: 1px solid var(--border);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.03);
  padding: 1rem;
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 0.9rem;
  overflow: hidden;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.03);
}

.content-header h2 {
  margin: 0.25rem 0 0;
  font-size: clamp(1.1rem, 2vw, 1.55rem);
}

.tab-panel {
  display: none;
  gap: 0.8rem;
  align-content: start;
}

.tab-panel.active {
  display: grid;
}

.inline-form {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: 1fr auto;
}

.stack-form {
  display: grid;
  gap: 0.7rem;
}

.stats-row {
  color: var(--muted);
  font-size: 0.9rem;
}

.todo-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.8rem;
}

.list-block {
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02));
  padding: 0.7rem;
  display: grid;
  gap: 0.55rem;
}

.list-title {
  margin: 0;
  font-size: 0.88rem;
  color: #dce5ff;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.counter-block {
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 14px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02));
  padding: 1rem;
  display: grid;
  gap: 0.8rem;
  justify-items: start;
}

.counter-value {
  margin: 0;
  font-size: clamp(2.2rem, 6vw, 3rem);
  font-weight: 800;
  color: #edf2ff;
  text-shadow: 0 0 22px rgba(90, 141, 255, 0.45);
}

.entry-list {
  list-style: none;
  margin: 0;
  padding: 0;
  max-height: 49vh;
  overflow-y: auto;
  display: grid;
  gap: 0.7rem;
  align-content: start;
}

.entry-item p {
  margin: 0;
}

.entry-item {
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  align-items: center;
  gap: 0.7rem;
  padding: 0.85rem;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: linear-gradient(135deg, rgba(111, 128, 255, 0.12), rgba(255, 255, 255, 0.03) 55%);
  animation: item-pop 0.36s ease;
  transition: transform 0.24s ease, border-color 0.24s ease, box-shadow 0.24s ease;
}

.entry-item:hover {
  transform: translateY(-2px);
  border-color: rgba(153, 178, 255, 0.35);
  box-shadow: 0 12px 22px rgba(8, 12, 28, 0.45);
}

@keyframes item-pop {
  from {
    opacity: 0;
    transform: translateY(7px) scale(0.985);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.complete-btn {
  width: 28px;
  height: 28px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  background: rgba(255, 255, 255, 0.04);
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.25s ease;
}

.complete-btn:hover {
  transform: scale(1.06);
  border-color: rgba(100, 240, 178, 0.6);
}

.complete-core {
  width: 9px;
  height: 9px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.45);
  transition: transform 0.24s ease, background 0.24s ease;
}

.complete-tick {
  position: absolute;
  color: #051815;
  font-size: 0.82rem;
  font-weight: 800;
  opacity: 0;
  transform: scale(0.5);
  transition: opacity 0.22s ease, transform 0.22s ease;
}

.complete-btn.done {
  border-color: rgba(100, 240, 178, 0.7);
  background: radial-gradient(circle at 20% 20%, #86ffd2, #40dca1);
  box-shadow: 0 0 0 4px rgba(100, 240, 178, 0.12), 0 0 22px rgba(100, 240, 178, 0.42);
  animation: complete-pop 0.35s ease;
}

.complete-btn.done .complete-core {
  transform: scale(3.2);
  background: rgba(255, 255, 255, 0);
}

.complete-btn.done .complete-tick {
  opacity: 1;
  transform: scale(1);
}

@keyframes complete-pop {
  0% {
    transform: scale(0.9);
  }
  60% {
    transform: scale(1.08);
  }
  100% {
    transform: scale(1);
  }
}

.item-title {
  font-weight: 700;
  color: #edf2ff;
}

.item-text {
  line-height: 1.35;
  color: #ccd8ff;
}

.item-time {
  font-size: 0.75rem;
  color: var(--muted);
}

.entry-item.done .item-text,
.entry-item.done .item-title {
  text-decoration: line-through;
  color: #8e99bb;
}

.delete-btn {
  border: 0;
  background: rgba(255, 122, 155, 0.22);
  color: #ffd7e2;
  border-radius: 10px;
  padding: 0.42rem 0.55rem;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease;
}

.delete-btn:hover {
  transform: scale(1.04);
  background: rgba(255, 122, 155, 0.34);
}

@media (max-width: 900px) {
  .workspace {
    grid-template-columns: 1fr;
    min-height: min(90vh, 960px);
  }

  .sidebar {
    grid-template-columns: 1fr auto;
    grid-template-rows: auto auto;
    align-items: center;
    gap: 0.8rem;
  }

  .sidebar-title {
    font-size: 1.45rem;
  }

  .sidebar-nav {
    grid-column: 1 / -1;
  }

  .welcome-pill {
    justify-self: start;
  }
}

@media (max-width: 640px) {
  .app-shell {
    padding: 0.7rem;
    place-items: center;
  }

  .panel {
    width: 100%;
    border-radius: 16px;
    padding: 0.85rem;
  }

  .login-card {
    max-width: none;
    margin: auto;
    width: min(460px, 96vw);
    transform: translateY(4vh);
  }

  .brand-title {
    font-size: clamp(1.7rem, 10vw, 2.5rem);
  }

  .subtitle {
    font-size: 0.92rem;
  }

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

  .btn,
  input {
    min-height: 44px;
  }

  .workspace {
    min-height: auto;
    gap: 0.7rem;
  }

  .content-area,
  .sidebar {
    padding: 0.75rem;
  }

  .content-header h2 {
    font-size: 1.1rem;
  }

  .todo-split {
    grid-template-columns: 1fr;
    gap: 0.6rem;
  }

  .list-block {
    padding: 0.55rem;
  }

  .entry-list {
    max-height: 34vh;
    gap: 0.55rem;
  }

  .entry-item {
    grid-template-columns: auto 1fr auto auto;
    gap: 0.45rem;
    padding: 0.65rem;
  }

  .item-text {
    font-size: 0.92rem;
  }

  .item-time {
    font-size: 0.7rem;
  }

  .delete-btn {
    padding: 0.34rem 0.46rem;
    font-size: 0.78rem;
  }
}

@media (max-width: 420px) {
  .eyebrow {
    letter-spacing: 0.11em;
    font-size: 0.72rem;
  }

  .workspace {
    gap: 0.55rem;
  }

  .content-area,
  .sidebar,
  .panel {
    border-radius: 14px;
  }

  .entry-item {
    grid-template-columns: auto 1fr auto;
  }

  .item-time {
    display: none;
  }
}