@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=DM+Serif+Display&display=swap');

/* ═══════════════════════════════════════ */
/* COLOR SYSTEM                           */
/* ═══════════════════════════════════════ */

:root {
  --bg-base: #080d19;
  --bg-surface: #111a2e;
  --bg-elevated: #172035;
  --bg-hover: #1c2842;
  --border: #1e2d4a;
  --border-hover: #2a3d5e;
  --text-primary: #e2e8f3;
  --text-secondary: #8896b3;
  --text-muted: #5d6d8e;
  --accent: #818cf8;
  --accent-hover: #a5b4fc;
}

/* ═══════════════════════════════════════ */
/* ANIMATIONS                             */
/* ═══════════════════════════════════════ */

@keyframes progress-fill {
  from { width: 0%; }
}

@keyframes fade-in-up {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes check-pop {
  0% { transform: scale(1); }
  50% { transform: scale(1.15); }
  100% { transform: scale(1); }
}

.animate-progress {
  animation: progress-fill 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.animate-fade-in-up {
  animation: fade-in-up 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94) both;
}

.animate-check-pop {
  animation: check-pop 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.stagger-1 { animation-delay: 0.04s; }
.stagger-2 { animation-delay: 0.08s; }
.stagger-3 { animation-delay: 0.12s; }
.stagger-4 { animation-delay: 0.16s; }
.stagger-5 { animation-delay: 0.20s; }

/* ═══════════════════════════════════════ */
/* NOISE TEXTURE                          */
/* ═══════════════════════════════════════ */

.noise-bg::before {
  content: '';
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.025'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
}

.noise-bg > * {
  position: relative;
  z-index: 1;
}

/* ═══════════════════════════════════════ */
/* SCROLLBAR                              */
/* ═══════════════════════════════════════ */

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 6px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-hover); }

/* ═══════════════════════════════════════ */
/* CARDS                                  */
/* ═══════════════════════════════════════ */

.card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 14px;
}

.card:hover {
  border-color: var(--border-hover);
}

.card-elevated {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
}

/* ═══════════════════════════════════════ */
/* SECTION HEADER                         */
/* ═══════════════════════════════════════ */

.section-header {
  color: var(--text-secondary);
  font-size: 0.8125rem; /* 13px */
  font-weight: 700;
  letter-spacing: 0.04em;
}

/* ═══════════════════════════════════════ */
/* CHECKBOX                               */
/* ═══════════════════════════════════════ */

.task-checkbox {
  appearance: none;
  width: 22px;
  height: 22px;
  border: 2px solid var(--border-hover);
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s ease;
  position: relative;
  flex-shrink: 0;
  background: transparent;
}

.task-checkbox:hover {
  border-color: #3b5278;
}

.task-checkbox:checked {
  background: #10b981;
  border-color: #10b981;
}

.task-checkbox:checked::after {
  content: '';
  position: absolute;
  top: 3px; left: 6px;
  width: 6px; height: 10px;
  border: solid white;
  border-width: 0 2.5px 2.5px 0;
  transform: rotate(45deg);
}

.task-checkbox:active {
  transform: scale(0.92);
}

@media (min-width: 1024px) {
  .task-checkbox {
    width: 20px;
    height: 20px;
  }
  .task-checkbox:checked::after {
    top: 2px; left: 5px;
    width: 6px; height: 9px;
  }
}

/* ═══════════════════════════════════════ */
/* MOBILE BOTTOM NAV                      */
/* ═══════════════════════════════════════ */

.bottom-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 10px 0 8px;
  flex: 1;
  font-size: 11px;
  font-weight: 600;
  transition: all 0.15s ease;
  position: relative;
}

.bottom-nav-item[data-active="true"] {
  color: var(--accent);
}

.bottom-nav-item[data-active="true"]::after {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 32px;
  height: 2px;
  background: var(--accent);
  border-radius: 0 0 2px 2px;
}

.bottom-nav-item:not([data-active="true"]) {
  color: var(--text-muted);
}