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

:root {
  --bg: #f4f2f8;
  --bg-card: #fdfcff;
  --bg-deep: #eae7f2;
  --border: #ddd8ea;
  --border-light: #e8e4f0;
  --text: #2a2530;
  --text-muted: #9a90b8;
  --text-faint: #b8b0cc;
  --accent: #6b5fa0;
  --accent-soft: #e8e4f4;
  --red: #c45a5a;
  --red-soft: #fceaea;
  --amber: #b8862e;
  --amber-soft: #faf3e4;
  --green: #5a8a52;
  --green-soft: #eaf4e8;
}

body.theme-sage {
  --bg: #f2f5f0;
  --bg-card: #fefffe;
  --bg-deep: #e4eae0;
  --border: #dde5d9;
  --border-light: #e6ede2;
  --text: #2a2a22;
  --text-muted: #7a8a72;
  --text-faint: #a0ac98;
  --accent: #5a7a52;
  --accent-soft: #e4f0e0;
  --red: #c45a4a;
  --red-soft: #fceaea;
  --amber: #b8862e;
  --amber-soft: #faf3e4;
  --green: #5a8a52;
  --green-soft: #eaf4e8;
}

body.theme-sand {
  --bg: #f5f0e8;
  --bg-card: #fffcf5;
  --bg-deep: #e8e0d4;
  --border: #e0d8cb;
  --border-light: #e8e2d8;
  --text: #2a2520;
  --text-muted: #8b7355;
  --text-faint: #b0a48f;
  --accent: #8b7355;
  --accent-soft: #f0e8da;
  --red: #d4544a;
  --red-soft: #fceaea;
  --amber: #b8862e;
  --amber-soft: #faf3e4;
  --green: #6b8f5e;
  --green-soft: #eaf4e8;
}

body.theme-slate {
  --bg: #f0f4f8;
  --bg-card: #fcfdff;
  --bg-deep: #dce4ec;
  --border: #d4dde5;
  --border-light: #e0e7ee;
  --text: #222a30;
  --text-muted: #7a8fa0;
  --text-faint: #a0b0be;
  --accent: #4a6d8c;
  --accent-soft: #e0eaf2;
  --red: #c45a4a;
  --red-soft: #fceaea;
  --amber: #b8862e;
  --amber-soft: #faf3e4;
  --green: #5a8a52;
  --green-soft: #eaf4e8;
}

body.theme-midnight {
  --bg: #161620;
  --bg-card: #1e1e2c;
  --bg-deep: #12121a;
  --border: #2a2a3a;
  --border-light: #252535;
  --text: #e0dce8;
  --text-muted: #8a84a0;
  --text-faint: #5a5570;
  --accent: #8b7fd4;
  --accent-soft: #2a2840;
  --red: #e06060;
  --red-soft: #3a2020;
  --amber: #d4a040;
  --amber-soft: #302818;
  --green: #60b060;
  --green-soft: #1a2e1a;
}

body.theme-sage-dark {
  --bg: #141a14;
  --bg-card: #1a221a;
  --bg-deep: #101610;
  --border: #2a352a;
  --border-light: #222d22;
  --text: #d8e0d4;
  --text-muted: #7a8a72;
  --text-faint: #4a5a44;
  --accent: #6a9a60;
  --accent-soft: #1e2e1a;
  --red: #e06060;
  --red-soft: #3a2020;
  --amber: #d4a040;
  --amber-soft: #302818;
  --green: #60b060;
  --green-soft: #1a2e1a;
}

body.theme-sand-dark {
  --bg: #1a1410;
  --bg-card: #241c14;
  --bg-deep: #14100a;
  --border: #3a2e20;
  --border-light: #302418;
  --text: #e8d8c4;
  --text-muted: #a07850;
  --text-faint: #6a4e30;
  --accent: #c8843a;
  --accent-soft: #2e2010;
  --red: #e06060;
  --red-soft: #3a2020;
  --amber: #d4a040;
  --amber-soft: #302818;
  --green: #60b060;
  --green-soft: #1a2e1a;
}

body.theme-slate-dark {
  --bg: #101418;
  --bg-card: #161c22;
  --bg-deep: #0c1014;
  --border: #242e38;
  --border-light: #1e2830;
  --text: #d4dce4;
  --text-muted: #6a8098;
  --text-faint: #3a5068;
  --accent: #5a8ab0;
  --accent-soft: #182430;
  --red: #e06060;
  --red-soft: #3a2020;
  --amber: #d4a040;
  --amber-soft: #302818;
  --green: #60b060;
  --green-soft: #1a2e1a;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'DM Sans', sans-serif;
  min-height: 100vh;
}

.g-mark {
  color: var(--accent);
  font-family: 'Instrument Serif', serif;
  font-weight: 400;
}

#login-view {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.login-card {
  width: 100%;
  max-width: 380px;
}

.login-brand {
  text-align: center;
  margin-bottom: 40px;
}

.login-brand h1 {
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1;
}

.tagline {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-top: 6px;
}

.login-form label {
  display: block;
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-bottom: 4px;
  margin-top: 16px;
  letter-spacing: 0.5px;
}

.login-form select,
.login-form input[type="text"],
.login-form input[type="password"] {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 11px 14px;
  border-radius: 8px;
  font-size: 0.88rem;
  font-family: 'DM Sans', sans-serif;
}

.login-form select:focus,
.login-form input:focus {
  outline: none;
  border-color: var(--accent);
}

.login-form select optgroup {
  color: var(--accent);
  font-style: normal;
}

.hint {
  font-size: 0.72rem;
  color: var(--text-faint);
  margin-top: 5px;
}

.error {
  color: var(--red);
  font-size: 0.8rem;
  margin-top: 10px;
  text-align: center;
}

.btn-primary {
  width: 100%;
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 12px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.88rem;
  font-weight: 600;
  font-family: 'DM Sans', sans-serif;
  margin-top: 24px;
  transition: background 0.15s;
}

.btn-primary:hover { opacity: 0.9; }
.btn-primary:disabled { background: var(--border); color: var(--text-muted); cursor: not-allowed; }

.btn-subtle-danger {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 7px 16px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.78rem;
  font-weight: 600;
  font-family: 'DM Sans', sans-serif;
  transition: all 0.15s;
}

.btn-subtle-danger:hover {
  border-color: var(--red);
  color: var(--red);
  background: var(--red-soft);
}

.opt {
  color: var(--text-faint);
  font-size: 0.62rem;
}

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 32px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-light);
  position: sticky;
  top: 0;
  z-index: 10;
}

nav h1 {
  font-size: 1.2rem;
  font-weight: 700;
}

.nav-right {
  display: flex;
  gap: 8px;
}

.btn-ghost {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 7px 16px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.78rem;
  font-family: 'DM Sans', sans-serif;
  font-weight: 600;
  transition: all 0.15s;
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.app-body {
  display: flex;
  min-height: calc(100vh - 56px);
}

.sidebar {
  width: 230px;
  padding: 24px 20px;
  background: var(--bg-card);
  border-right: 1px solid var(--border-light);
  flex-shrink: 0;
}

.sidebar-section {
  margin-bottom: 28px;
}

.sidebar-section h3 {
  font-size: 0.65rem;
  color: var(--accent);
  letter-spacing: 1px;
  margin-bottom: 8px;
  font-weight: 700;
}

.sidebar-btn {
  display: block;
  width: 100%;
  background: none;
  border: none;
  color: var(--text-muted);
  padding: 8px 12px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.82rem;
  font-family: 'DM Sans', sans-serif;
  text-align: left;
  margin-bottom: 2px;
  transition: all 0.1s;
}

.sidebar-btn:hover { color: var(--text); background: var(--bg); }
.sidebar-btn.active { color: var(--text); background: var(--accent-soft); font-weight: 600; }

.course-btn {
  display: block;
  width: 100%;
  background: none;
  border: none;
  color: var(--text-muted);
  padding: 6px 12px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.75rem;
  font-family: 'DM Sans', sans-serif;
  text-align: left;
  margin-bottom: 1px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.course-btn:hover { color: var(--text); background: var(--bg); }
.course-btn.active { color: var(--accent); background: var(--accent-soft); }

.course-row {
  display: flex;
  align-items: center;
  margin-bottom: 1px;
}

.course-row .course-btn {
  flex: 1;
  margin-bottom: 0;
  display: flex;
  align-items: center;
  gap: 7px;
  min-width: 0;
}

.course-btn-label {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.course-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.course-dot.empty { background: var(--border); }

.course-menu-btn {
  background: none;
  border: none;
  color: var(--text-faint);
  cursor: pointer;
  padding: 4px 7px;
  border-radius: 6px;
  font-size: 0.9rem;
  font-family: 'DM Sans', sans-serif;
  flex-shrink: 0;
  opacity: 0;
  transition: opacity 0.1s, color 0.1s;
}

.course-row:hover .course-menu-btn,
.course-menu-btn:focus-visible { opacity: 1; }

.course-menu-btn:hover {
  color: var(--accent);
  background: var(--bg);
}

.color-input {
  width: 48px;
  height: 32px;
  padding: 2px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
}

.modal-card input:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.stats-row {
  display: flex;
  gap: 8px;
  margin: 0 0 24px;
}

.stat-card {
  flex: 1;
  background: var(--bg);
  border-radius: 8px;
  padding: 10px 8px;
  text-align: center;
  cursor: pointer;
  transition: background 0.15s;
}

.stat-card:hover {
  background: var(--bg-deep);
}

.stat-num {
  display: block;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
}

.stat-warn { color: var(--red); }

.stat-lbl {
  font-size: 0.6rem;
  color: var(--text-muted);
  letter-spacing: 0.3px;
}

main {
  flex: 1;
  padding: 28px 36px;
  max-width: 820px;
}

.assignment-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 10px;
  padding: 16px 20px;
  margin-bottom: 10px;
  cursor: pointer;
  transition: border-color 0.15s, transform 0.1s;
  position: relative;
  border-left: 4px solid var(--accent);
}

.assignment-card:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.assignment-card.overdue { border-left-color: var(--red); }
.assignment-card.soon { border-left-color: var(--amber); }
.assignment-card.custom-card { border-left-color: var(--custom, var(--green)); }

.card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.card-title {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 3px;
}

.card-badge {
  font-size: 0.68rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 20px;
  white-space: nowrap;
  flex-shrink: 0;
}

.badge-overdue { background: var(--red-soft); color: var(--red); }
.badge-soon { background: var(--amber-soft); color: var(--amber); }
.badge-ok { background: var(--green-soft); color: var(--green); }

.card-course {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.card-due {
  font-size: 0.75rem;
  color: var(--text-faint);
  margin-top: 4px;
}

.card-delete {
  position: absolute;
  top: 10px;
  right: 12px;
  background: none;
  border: none;
  color: var(--border);
  cursor: pointer;
  font-size: 0.9rem;
}

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

.empty-state {
  text-align: center;
  padding: 80px 20px;
  color: var(--text-faint);
  font-size: 0.92rem;
}

.modal-overlay {
  position: fixed;
  top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(42, 37, 48, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.modal-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 28px;
  width: 100%;
  max-width: 400px;
}

.modal-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}

.modal-top h2 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.4rem;
  cursor: pointer;
}

.modal-close:hover { color: var(--text); }

.modal-card label {
  display: block;
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-bottom: 4px;
  margin-top: 14px;
  letter-spacing: 0.5px;
}

.modal-card label:first-of-type { margin-top: 0; }

.modal-card input[type="text"],
.modal-card input[type="datetime-local"] {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-family: 'DM Sans', sans-serif;
}

.modal-card input:focus {
  outline: none;
  border-color: var(--accent);
}

.settings-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 28px;
  width: 100%;
  max-width: 500px;
  max-height: 80vh;
  overflow-y: auto;
}

.settings-section {
  margin-bottom: 28px;
}

.settings-section h3 {
  font-size: 0.72rem;
  color: var(--accent);
  letter-spacing: 0.8px;
  font-weight: 700;
  margin-bottom: 6px;
}

.settings-hint {
  font-size: 0.78rem;
  color: var(--text-faint);
  margin-bottom: 14px;
  line-height: 1.4;
}

.settings-row {
  display: flex;
  gap: 12px;
}

.settings-row > div { flex: 1; }

.settings-row label {
  display: block;
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.settings-row input[type="date"] {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-family: 'DM Sans', sans-serif;
}

.settings-row input:focus {
  outline: none;
  border-color: var(--accent);
}

.danger-zone {
  border: 1px solid var(--red-soft);
  border-radius: 8px;
  padding: 14px 16px;
}

.danger-zone h3 { color: var(--red); }

.danger-zone .settings-hint { margin-bottom: 10px; }

.course-toggle {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  border-bottom: 1px solid var(--border-light);
}

.course-toggle:last-child { border-bottom: none; }

.course-toggle input[type="checkbox"] {
  accent-color: var(--accent);
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.course-toggle-name {
  font-size: 0.82rem;
  color: var(--text);
}

.course-toggle-count {
  font-size: 0.7rem;
  color: var(--text-faint);
  margin-left: auto;
}

.theme-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.theme-swatch {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 2px solid transparent;
  border-radius: 8px;
  cursor: pointer;
  font-family: 'DM Sans', sans-serif;
}

.theme-swatch:hover { opacity: 0.85; }
.theme-swatch.active { border-color: currentColor; }

.swatch-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
}

.swatch-label {
  font-size: 0.78rem;
  font-weight: 600;
}

.custom-select { position: relative; }

.custom-select-trigger {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-family: 'DM Sans', sans-serif;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.custom-select-trigger::after {
  content: "\25BE";
  font-size: 12px;
  color: var(--text-faint);
}

.custom-select-trigger.has-value { color: var(--text); }

.custom-select-options {
  display: none;
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  max-height: 200px;
  overflow-y: auto;
  z-index: 50;
  padding: 4px;
}

.custom-select-options.open { display: block; }

.custom-select-option {
  padding: 8px 12px;
  font-size: 0.82rem;
  color: var(--text);
  cursor: pointer;
  border-radius: 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.custom-select-option:hover {
  background: var(--accent-soft);
  color: var(--accent);
}

.custom-select-option.add-new {
  color: var(--accent);
  font-weight: 600;
  border-top: 1px solid var(--border-light);
  margin-top: 4px;
  padding-top: 10px;
}

#drop-zone {
  border: 2px dashed var(--border);
  border-radius: 10px;
  padding: 36px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s;
  position: relative;
}

#drop-zone:hover { border-color: var(--accent); }

#drop-zone p {
  color: var(--text-faint);
  font-size: 0.85rem;
}

#drop-zone input[type="file"] {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  opacity: 0;
  cursor: pointer;
}

.scan-item {
  background: var(--bg);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  padding: 12px;
  margin-bottom: 8px;
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.scan-item input[type="checkbox"] {
  accent-color: var(--accent);
  margin-top: 3px;
  flex-shrink: 0;
  width: 16px;
  height: 16px;
}

.scan-item-info { flex: 1; }

.scan-item-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
}

.scan-item-detail {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.scan-item-edit {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 0.78rem;
  font-family: 'DM Sans', sans-serif;
  margin-top: 6px;
}

.scan-item-edit:focus {
  outline: none;
  border-color: var(--accent);
}

@media (max-width: 768px) {
  .app-body { flex-direction: column; }

  .sidebar {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--border-light);
    padding: 14px 16px;
    display: flex;
    gap: 16px;
    align-items: center;
    flex-wrap: wrap;
  }

  .sidebar-section { margin-bottom: 0; }
  .sidebar-section h3 { display: none; }

  .sidebar-btn {
    display: inline-block;
    width: auto;
    padding: 6px 12px;
  }

  .course-btn { display: none; }
  .course-row { display: none; }
  .stats-row { display: none; }

  main { padding: 16px; }
  nav { padding: 12px 16px; }
  .login-brand h1 { font-size: 2.8rem; }
}

.scan-item {
  background: var(--bg);
  border: 1px solid var(--border-light);
  border-radius: 10px;
  padding: 14px 16px;
  margin-bottom: 8px;
  display: flex;
  gap: 12px;
  align-items: flex-start;
  transition: border-color 0.15s;
}

.scan-item:has(input[type="checkbox"]:checked) {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.scan-item-title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 2px;
}

.scan-item-detail {
  font-size: 0.72rem;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 6px;
}

.scan-item-fields {
  display: flex;
  gap: 6px;
  margin-top: 6px;
}

.scan-item-edit {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 5px 9px;
  border-radius: 6px;
  font-size: 0.76rem;
  font-family: 'DM Sans', sans-serif;
}

.scan-item-edit.course-field { flex: 1; }
.scan-item-edit.date-field { flex: 1.4; }

.scan-item-edit:focus {
  outline: none;
  border-color: var(--accent);
}

.scan-item-course-tag {
  display: inline-block;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.68rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 20px;
  margin-bottom: 4px;
}

/* WEED MODE (easter egg: type 420420 on the main page) */
body.weed-mode {
  --accent: #4a9a3e;
  --accent-soft: #e2f2dc;
}

.weed-toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background: var(--bg-card);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 8px 18px;
  font-size: 0.82rem;
  font-weight: 600;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
  opacity: 0;
  transition: opacity 0.3s, transform 0.3s;
  pointer-events: none;
  z-index: 1000;
}

.weed-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}