/* =========================================================
   Design tokens
   ========================================================= */
:root {
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --primary-rgb: 99, 102, 241;

  --green: #16a34a;
  --amber: #d97706;
  --red: #dc2626;
  --blue: #2563eb;

  /* Light theme (default) */
  --text: #0f172a;
  --muted: #64748b;
  --heading: #1e293b;
  --card-bg: rgba(255, 255, 255, 0.72);
  --card-border: rgba(255, 255, 255, 0.6);
  --card-shadow: 0 10px 30px rgba(15, 23, 42, 0.12);
  --input-bg: rgba(255, 255, 255, 0.85);
  --input-border: rgba(148, 163, 184, 0.45);
  --hover-row: rgba(99, 102, 241, 0.06);
  --divider: rgba(148, 163, 184, 0.25);
  --ghost-bg: rgba(255, 255, 255, 0.6);
  --ghost-hover: rgba(255, 255, 255, 0.9);
  --header-text: #0f172a;
  --header-sub: #475569;
  --switch-bg: rgba(255, 255, 255, 0.55);
}

[data-theme="dark"] {
  --text: #e5e7eb;
  --muted: #94a3b8;
  --heading: #f1f5f9;
  --card-bg: rgba(17, 24, 39, 0.55);
  --card-border: rgba(148, 163, 184, 0.18);
  --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
  --input-bg: rgba(15, 23, 42, 0.55);
  --input-border: rgba(148, 163, 184, 0.25);
  --hover-row: rgba(99, 102, 241, 0.14);
  --divider: rgba(148, 163, 184, 0.18);
  --ghost-bg: rgba(148, 163, 184, 0.12);
  --ghost-hover: rgba(148, 163, 184, 0.22);
  --header-text: #f1f5f9;
  --header-sub: #cbd5e1;
  --switch-bg: rgba(15, 23, 42, 0.45);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body { min-height: 100%; }

body {
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--text);
  line-height: 1.55;
  background: #f8fafc;
  transition: color 0.3s ease;
}
[data-theme="dark"] body { background: #060814; }

/* =========================================================
   Background layers
   ========================================================= */
#shader-canvas,
#aurora-bg {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
  pointer-events: none;
}

/* Dark -> WebGL shader canvas */
#shader-canvas { display: none; }
[data-theme="dark"] #shader-canvas { display: block; }

/* Light -> Aurora background (aceternity style) */
#aurora-bg {
  background: #f7f9fc;
  overflow: hidden;
}
[data-theme="dark"] #aurora-bg { display: none; }

.aurora-layer {
  position: absolute;
  inset: -50%;
  background-image:
    repeating-linear-gradient(100deg,
      #ffffff 0%, #ffffff 7%, transparent 10%, transparent 12%, #ffffff 16%),
    repeating-linear-gradient(100deg,
      #3b82f6 10%, #a5b4fc 15%, #93c5fd 20%, #ddd6fe 25%, #60a5fa 30%);
  background-size: 300% 300%, 200% 200%;
  background-position: 50% 50%, 50% 50%;
  filter: blur(12px) saturate(1.1);
  opacity: 0.55;
  mix-blend-mode: multiply;
  will-change: background-position;
  animation: aurora 60s linear infinite;
  -webkit-mask-image: radial-gradient(ellipse at 50% 0%, #000 10%, transparent 75%);
          mask-image: radial-gradient(ellipse at 50% 0%, #000 10%, transparent 75%);
}
@keyframes aurora {
  0%   { background-position: 50% 50%, 50% 50%; }
  100% { background-position: 350% 50%, 350% 50%; }
}
@media (prefers-reduced-motion: reduce) {
  .aurora-layer { animation: none; }
}

/* =========================================================
   Layout
   ========================================================= */
.container {
  margin: 0 auto;
  padding: 0 20px;
}

/* =========================================================
   Auth screen
   ========================================================= */
.auth-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.auth-card { width: 100%; max-width: 400px; }
.auth-brand { text-align: center; margin-bottom: 20px; }
.auth-brand .brand-logo { margin: 0 auto 12px; width: 54px; height: 54px; font-size: 1.6rem; }
.auth-brand h1 { font-size: 1.15rem; font-weight: 800; color: var(--heading); letter-spacing: -0.02em; }
.auth-brand p { font-size: 0.84rem; color: var(--muted); margin-top: 4px; }
.auth-form { margin-top: 6px; }
.auth-form .btn-block { margin-top: 16px; }
.auth-switch { text-align: center; font-size: 0.83rem; color: var(--muted); margin-top: 14px; }
.auth-switch a { color: var(--primary); font-weight: 600; text-decoration: none; }
.auth-switch a:hover { text-decoration: underline; }

/* Header right area */
.header-right { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.user-chip {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 5px 8px 5px 6px;
  border-radius: 14px;
  background: var(--switch-bg);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.user-avatar {
  width: 30px; height: 30px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), #8b5cf6);
  color: #fff; font-size: 0.85rem; font-weight: 700;
}
.user-name { font-size: 0.85rem; font-weight: 600; color: var(--header-text); }
@media (max-width: 520px) { .user-name { display: none; } }

.app-header { padding: 22px 0 8px; }
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 14px; }
.brand-logo {
  width: 46px; height: 46px;
  display: grid; place-items: center;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary), #a855f7);
  color: #fff;
  font-size: 1.4rem; font-weight: 800;
  box-shadow: 0 8px 20px rgba(var(--primary-rgb), 0.4);
}
.brand h1 { font-size: 1.25rem; font-weight: 800; color: var(--header-text); letter-spacing: -0.02em; }
.brand p { font-size: 0.78rem; color: var(--header-sub); margin-top: 2px; }

/* Theme switcher */
.theme-switch {
  display: inline-flex;
  gap: 4px;
  padding: 5px;
  border-radius: 14px;
  background: var(--switch-bg);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.theme-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  border: none;
  border-radius: 10px;
  background: transparent;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}
.theme-btn:hover { color: var(--text); }
.theme-btn.active {
  background: linear-gradient(135deg, var(--primary), #8b5cf6);
  color: #fff;
  box-shadow: 0 4px 12px rgba(var(--primary-rgb), 0.35);
}
.theme-btn .ico { font-size: 0.95rem; line-height: 1; }
@media (max-width: 640px) { .theme-btn .lbl { display: none; } }

main.container { padding-top: 18px; padding-bottom: 48px; }

.layout {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 22px;
  align-items: start;
}
@media (max-width: 940px) { .layout { grid-template-columns: 1fr; } }
.left-col { display: flex; flex-direction: column; gap: 22px; }
.form-card { position: relative; z-index: 5; }
.manage-card { position: relative; z-index: 1; }

/* =========================================================
   Cards (glass)
   ========================================================= */
.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 18px;
  box-shadow: var(--card-shadow);
  padding: 22px;
  backdrop-filter: blur(16px) saturate(1.2);
  -webkit-backdrop-filter: blur(16px) saturate(1.2);
}
.card h2 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--heading);
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

/* =========================================================
   Forms
   ========================================================= */
form label {
  display: block;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--muted);
  margin: 12px 0 5px;
}
.req { color: var(--red); }

input, select, textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--input-border);
  border-radius: 11px;
  font-size: 0.9rem;
  font-family: inherit;
  color: var(--text);
  background: var(--input-bg);
  transition: border-color 0.15s, box-shadow 0.15s;
}
input::placeholder, textarea::placeholder { color: var(--muted); opacity: 0.8; }
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.18);
}
select option { color: #0f172a; }
textarea { resize: vertical; }

.row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-actions { display: flex; gap: 10px; margin-top: 18px; }

.datepicker { position: relative; }
.datepicker input { padding-right: 44px; cursor: pointer; }
.datepicker-toggle {
  position: absolute;
  right: 7px;
  top: 50%;
  transform: translateY(-50%);
  width: 32px;
  height: 32px;
  border: 0;
  border-radius: 9px;
  background: var(--ghost-bg);
  color: var(--text);
  cursor: pointer;
}
.datepicker-toggle:hover { background: var(--ghost-hover); }
.datepicker-panel {
  position: absolute;
  z-index: 1000;
  top: calc(100% + 8px);
  left: 0;
  width: 292px;
  padding: 12px;
  border: 1px solid var(--card-border);
  border-radius: 14px;
  background: var(--card-bg);
  box-shadow: var(--shadow);
}
.datepicker-head,
.datepicker-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.datepicker-month { font-weight: 700; font-size: 0.9rem; }
.datepicker-nav,
.datepicker-action {
  border: 1px solid var(--card-border);
  border-radius: 9px;
  background: var(--ghost-bg);
  color: var(--text);
  cursor: pointer;
}
.datepicker-nav { width: 30px; height: 30px; }
.datepicker-action { padding: 7px 9px; font-size: 0.78rem; }
.datepicker-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 5px;
  margin: 12px 0;
}
.datepicker-weekday {
  color: var(--muted);
  font-size: 0.7rem;
  text-align: center;
  font-weight: 700;
}
.datepicker-day {
  height: 32px;
  border: 0;
  border-radius: 9px;
  background: transparent;
  color: var(--text);
  cursor: pointer;
}
.datepicker-day:hover { background: var(--ghost-hover); }
.datepicker-day.today { box-shadow: inset 0 0 0 1px var(--primary); }
.datepicker-day.selected { background: var(--primary); color: #fff; }
.datepicker-day.empty { visibility: hidden; }

/* Manage card */
.manage-card h3 { font-size: 0.88rem; font-weight: 600; color: var(--text); margin-bottom: 9px; }
.mini-form { padding-bottom: 16px; }
.mini-form + .mini-form { border-top: 1px solid var(--divider); padding-top: 16px; }
.mini-form:last-child { padding-bottom: 0; }
.mini-form input { margin-bottom: 9px; }

/* =========================================================
   Buttons
   ========================================================= */
.btn {
  padding: 10px 16px;
  border: none;
  border-radius: 11px;
  font-size: 0.85rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: transform 0.08s, background 0.15s, opacity 0.15s, box-shadow 0.15s;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: linear-gradient(135deg, var(--primary), #8b5cf6);
  color: #fff;
  box-shadow: 0 6px 16px rgba(var(--primary-rgb), 0.32);
}
.btn-primary:hover { box-shadow: 0 8px 22px rgba(var(--primary-rgb), 0.45); }
.btn-ghost { background: var(--ghost-bg); color: var(--text); border: 1px solid var(--card-border); }
.btn-ghost:hover { background: var(--ghost-hover); }
.btn-ghost:disabled { opacity: 0.4; cursor: not-allowed; }
.btn-block { width: 100%; }
.btn-icon { padding: 7px 11px; }
.btn-sm { padding: 6px 10px; font-size: 0.76rem; }
.btn-edit { background: rgba(37, 99, 235, 0.14); color: var(--blue); border: none; }
.btn-edit:hover { background: rgba(37, 99, 235, 0.24); }
.btn-del { background: rgba(220, 38, 38, 0.14); color: var(--red); border: none; }
.btn-del:hover { background: rgba(220, 38, 38, 0.24); }

/* =========================================================
   Filters & Table
   ========================================================= */
.filters {
  display: grid;
  grid-template-columns: 2fr repeat(4, 1fr);
  gap: 9px;
  margin-bottom: 18px;
}
@media (max-width: 760px) { .filters { grid-template-columns: 1fr 1fr; } }

.table-wrap { overflow-x: auto; border-radius: 12px; }
table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
th, td {
  padding: 11px 12px;
  text-align: left;
  border-bottom: 1px solid var(--divider);
  white-space: nowrap;
}
th {
  color: var(--muted);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 700;
}
tbody tr { transition: background 0.12s; }
tbody tr:hover { background: var(--hover-row); }
tbody tr:last-child td { border-bottom: none; }
.empty { text-align: center; color: var(--muted); padding: 28px; }

/* Badges */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}
.status-pending { background: rgba(217, 119, 6, 0.16); color: var(--amber); }
.status-progress { background: rgba(37, 99, 235, 0.16); color: var(--blue); }
.status-done { background: rgba(22, 163, 74, 0.16); color: var(--green); }
.prio-low { background: rgba(100, 116, 139, 0.18); color: var(--muted); }
.prio-medium { background: rgba(217, 119, 6, 0.16); color: var(--amber); }
.prio-high { background: rgba(220, 38, 38, 0.16); color: var(--red); }

.status-cell { display: flex; flex-direction: column; gap: 5px; align-items: flex-start; }
.status-select { padding: 4px 8px; font-size: 0.74rem; width: auto; border-radius: 8px; }
.actions { gap: 6px; }

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-top: 18px;
}
#page-info { font-size: 0.85rem; color: var(--muted); font-weight: 600; }
.page-size {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 0.8rem;
  color: var(--muted);
  font-weight: 600;
}
.page-size select { width: auto; padding: 6px 8px; font-size: 0.8rem; }
.total-info { text-align: center; font-size: 0.78rem; color: var(--muted); margin-top: 8px; }

/* =========================================================
   Notifications
   ========================================================= */
.notif {
  padding: 13px 18px;
  border-radius: 13px;
  margin-bottom: 18px;
  font-size: 0.9rem;
  font-weight: 600;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid transparent;
  animation: slideDown 0.25s ease;
}
@keyframes slideDown { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: none; } }
.notif.success { background: rgba(22, 163, 74, 0.16); color: var(--green); border-color: rgba(22, 163, 74, 0.3); }
.notif.error { background: rgba(220, 38, 38, 0.16); color: var(--red); border-color: rgba(220, 38, 38, 0.3); }
.toast-container {
  position: fixed;
  top: 18px;
  right: 18px;
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: min(360px, calc(100vw - 36px));
  pointer-events: none;
}
.toast {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 10px;
  padding: 13px 14px;
  border-radius: 12px;
  border: 1px solid var(--card-border);
  background: #ffffff;
  color: var(--text);
  box-shadow: var(--shadow);
  font-size: 0.88rem;
  font-weight: 600;
  pointer-events: auto;
  animation: toastEnter 0.22s ease;
}
.toast-success { border-left: 4px solid var(--green); }
.toast-error { border-left: 4px solid var(--red); }
.toast-success { background: #f0fdf4; border-color: #bbf7d0; }
.toast-error { background: #fef2f2; border-color: #fecaca; }
.toast-icon {
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border-radius: 999px;
  color: #fff;
  font-size: 0.75rem;
}
.toast-success .toast-icon { background: var(--green); }
.toast-error .toast-icon { background: var(--red); }
.toast-message { line-height: 1.35; }
.toast-close {
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: 1.2rem;
  line-height: 1;
  cursor: pointer;
}
.toast-close:hover { color: var(--text); }
.toast-exit {
  opacity: 0;
  transform: translateX(18px);
  transition: opacity 0.18s ease, transform 0.18s ease;
}
@keyframes toastEnter {
  from { opacity: 0; transform: translateX(18px); }
  to { opacity: 1; transform: none; }
}
.hidden { display: none !important; }

/* =========================================================
   Modal
   ========================================================= */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(2, 6, 23, 0.55);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
  animation: fadeIn 0.2s ease;
  padding: 20px;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.modal-content {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 18px;
  width: 100%;
  max-width: 540px;
  max-height: 80vh;
  overflow-y: auto;
  padding: 22px;
  box-shadow: var(--card-shadow);
  backdrop-filter: blur(20px) saturate(1.2);
  -webkit-backdrop-filter: blur(20px) saturate(1.2);
  animation: popIn 0.2s ease;
}
.modal-confirm { max-width: 420px; }
.modal-confirm p { color: var(--text); line-height: 1.5; margin-bottom: 4px; }
@keyframes popIn { from { opacity: 0; transform: scale(0.96); } to { opacity: 1; transform: scale(1); } }
.modal-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}
.modal-head h3 { font-size: 1.05rem; color: var(--heading); }
.log-item {
  border-left: 3px solid var(--primary);
  padding: 10px 14px;
  margin-bottom: 9px;
  background: var(--hover-row);
  border-radius: 0 10px 10px 0;
  font-size: 0.84rem;
}
.log-item .log-meta { color: var(--muted); font-size: 0.72rem; margin-top: 3px; }