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

:root {
  --bg:      #080808;
  --panel:   #0d0d0d;
  --border:  rgba(255,255,255,0.07);
  --fg:      #c8c8c8;
  --fg-dim:  rgba(255,255,255,0.25);
  --red:     #ff3b3b;
  --red-dim: rgba(255,59,59,0.15);
  --teal:    #ff80c8;
  --teal-a:  rgba(255,128,200,0.25);
  --teal-dim: rgba(255,128,200,0.55);
}

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--fg);
  font-family: 'Space Mono', monospace;
}

/* ── Topbar ──────────────────────────────────────────────────── */
.admin-topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
  flex-wrap: wrap;
}

.admin-title {
  font-family: 'VT323', monospace;
  font-size: 2.2rem;
  font-weight: 400;
  letter-spacing: 0.14em;
  color: #fff;
  line-height: 1;
  flex: 1;
}

.cursor {
  color: var(--red);
  animation: blink 1.1s step-end infinite;
}
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0} }

.admin-user-chip {
  font-family: 'Space Mono', monospace;
  font-size: 0.65rem;
  color: var(--fg-dim);
  letter-spacing: 0.1em;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 3px 8px;
}

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
  font-family: 'VT323', monospace;
  font-size: 1.25rem;
  letter-spacing: 0.1em;
  padding: 5px 16px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--fg-dim);
  cursor: pointer;
  transition: color .15s, background .15s, border-color .15s;
  white-space: nowrap;
}
.btn:hover { color: #fff; background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.15); }
.btn:disabled { opacity: 0.3; cursor: not-allowed; }
.btn.danger { color: rgba(255,59,59,0.6); border-color: rgba(255,59,59,0.2); }
.btn.danger:hover { color: var(--red); background: var(--red-dim); border-color: rgba(255,59,59,0.4); }
.btn.primary {
  color: #fff;
  background: var(--teal-a);
  border-color: var(--teal-dim);
}
.btn.primary:hover { background: rgba(255,128,200,0.38); }
.btn.primary:disabled { background: rgba(255,255,255,0.03); border-color: var(--border); color: var(--fg-dim); }
.btn.small { font-size: 1rem; padding: 3px 10px; }
.btn.large { font-size: 1.6rem; padding: 10px 24px; width: 100%; letter-spacing: 0.14em; }

/* ── Tabs ────────────────────────────────────────────────────── */
.admin-tabs {
  display: flex;
  gap: 0;
  padding: 0 20px;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
}

.admin-tab {
  font-family: 'VT323', monospace;
  font-size: 1.3rem;
  letter-spacing: 0.12em;
  padding: 10px 20px;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--fg-dim);
  cursor: pointer;
  transition: color .2s, border-color .2s;
  margin-bottom: -1px;
}
.admin-tab:hover { color: #fff; }
.admin-tab.active { color: #fff; border-bottom-color: var(--teal); }

/* ── Content area ────────────────────────────────────────────── */
.admin-content {
  padding: 20px;
  max-width: 780px;
  margin: 0 auto;
}

/* ── Timetable controls row ──────────────────────────────────── */
.tt-controls {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 20px;
}
.tt-controls .week-toggle { margin-bottom: 0; }
.hours-toggle {
  display: flex;
  align-items: center;
  gap: 10px;
}
.hours-label {
  font-family: 'Space Mono', monospace;
  font-size: 0.58rem;
  color: var(--fg-dim);
  letter-spacing: 0.1em;
  white-space: nowrap;
}

/* ── Week toggle ─────────────────────────────────────────────── */
.week-toggle {
  display: flex;
  gap: 0;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 3px;
  width: fit-content;
  margin-bottom: 20px;
}
.week-btn {
  font-family: 'VT323', monospace;
  font-size: 1.3rem;
  letter-spacing: 0.1em;
  padding: 4px 20px;
  background: none;
  border: none;
  border-radius: 999px;
  color: var(--fg-dim);
  cursor: pointer;
  transition: color .2s, background .2s;
}
.week-btn.active { color: #fff; background: rgba(255,255,255,0.1); }

/* ── Day card ────────────────────────────────────────────────── */
.day-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 14px;
  overflow: hidden;
}

.day-card-hdr {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  background: rgba(255,255,255,0.02);
}

.day-name {
  font-family: 'VT323', monospace;
  font-size: 1.5rem;
  letter-spacing: 0.12em;
  color: #fff;
}

.span-counter {
  font-family: 'Space Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--fg-dim);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2px 8px;
}
.span-counter.invalid { color: var(--red); border-color: rgba(255,59,59,0.4); background: var(--red-dim); }

.day-rows { padding: 10px 12px 6px; }

/* ── Form row ────────────────────────────────────────────────── */
.form-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 7px;
}

.subj-select {
  flex: 1;
  font-family: 'VT323', monospace;
  font-size: 1.1rem;
  letter-spacing: 0.05em;
  padding: 5px 8px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: 5px;
  color: #fff;
  cursor: pointer;
  min-width: 0;
}
.subj-select:focus { outline: 1px solid rgba(255,59,59,0.35); border-color: rgba(255,59,59,0.25); }

.span-wrap {
  display: flex;
  align-items: center;
  gap: 5px;
  flex-shrink: 0;
}
.span-label-txt {
  font-family: 'Space Mono', monospace;
  font-size: 0.6rem;
  color: var(--fg-dim);
  letter-spacing: 0.08em;
}
.span-input {
  width: 52px;
  font-family: 'Space Mono', monospace;
  font-size: 0.75rem;
  padding: 5px 6px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 5px;
  color: #fff;
  text-align: center;
}
.span-input:focus { outline: 1px solid rgba(255,59,59,0.35); border-color: rgba(255,59,59,0.25); }
.span-input.invalid { border-color: rgba(255,59,59,0.5); background: var(--red-dim); }

.row-add-btn {
  width: 100%;
  padding: 7px;
  margin-top: 4px;
  margin-bottom: 8px;
  background: none;
  border: 1px dashed rgba(255,255,255,0.1);
  border-radius: 5px;
  font-family: 'Space Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.2);
  cursor: pointer;
  transition: color .15s, border-color .15s;
}
.row-add-btn:hover { color: rgba(255,255,255,0.5); border-color: rgba(255,255,255,0.2); }

/* ── Exams list ──────────────────────────────────────────────── */
.exam-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.exam-label-input, .exam-date-input {
  font-family: 'Space Mono', monospace;
  font-size: 0.72rem;
  padding: 6px 10px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 5px;
  color: #fff;
  letter-spacing: 0.03em;
}
.exam-label-input { flex: 1; }
.exam-date-input { width: 145px; flex-shrink: 0; }
.exam-time-input { width: 105px; flex-shrink: 0; }
.exam-label-input:focus, .exam-date-input:focus, .exam-time-input:focus {
  outline: 1px solid rgba(255,59,59,0.35);
  border-color: rgba(255,59,59,0.25);
}
.exam-date-input::-webkit-calendar-picker-indicator,
.exam-time-input::-webkit-calendar-picker-indicator { filter: invert(0.55); cursor: pointer; }

.exams-empty {
  font-size: 0.7rem;
  color: var(--fg-dim);
  letter-spacing: 0.08em;
  padding: 12px 0 8px;
}

/* ── Events tab ──────────────────────────────────────────────── */
.event-add-form { display: flex; flex-direction: column; gap: 8px; margin-bottom: 16px; }
.event-add-row  { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.event-add-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.event-type-select { flex-shrink: 0; min-width: 100px; }

.event-link-label {
  font-family: 'Space Mono', monospace;
  font-size: 0.62rem;
  color: var(--fg-dim);
  letter-spacing: 0.06em;
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
}
.event-link-label input[type="checkbox"] { accent-color: var(--teal); cursor: pointer; }

.event-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px 12px;
  margin-bottom: 8px;
  display: flex;
  flex-direction: column;
  gap: 7px;
}
.event-card-top { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }

.event-details-input { font-size: 0.65rem; }

.event-linked-chip {
  display: inline-block;
  font-family: 'Space Mono', monospace;
  font-size: 0.55rem;
  letter-spacing: 0.08em;
  color: #4fc3f7;
  background: rgba(79,195,247,0.1);
  border: 1px solid rgba(79,195,247,0.25);
  border-radius: 3px;
  padding: 2px 7px;
}

/* ── Annc date row (conditional) ─────────────────────────────── */
.annc-date-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

/* ── Save bar ────────────────────────────────────────────────── */
.save-bar {
  position: sticky;
  bottom: 0;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 20px;
  background: linear-gradient(to top, var(--bg) 70%, transparent);
  margin: 0 -20px;
}

.save-status {
  font-family: 'Space Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  color: var(--fg-dim);
}
.save-status.ok  { color: #81c784; }
.save-status.err { color: var(--red); }

/* ── Login screen ────────────────────────────────────────────── */
#loginSection {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.login-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 36px 32px;
  width: 100%;
  max-width: 360px;
}

.login-title {
  font-family: 'VT323', monospace;
  font-size: 2.4rem;
  letter-spacing: 0.14em;
  color: #fff;
  margin-bottom: 8px;
  display: block;
}

.login-sub {
  font-family: 'Space Mono', monospace;
  font-size: 0.62rem;
  color: var(--fg-dim);
  letter-spacing: 0.1em;
  margin-bottom: 28px;
  display: block;
}

.login-field {
  display: block;
  width: 100%;
  font-family: 'Space Mono', monospace;
  font-size: 0.78rem;
  padding: 10px 12px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: #fff;
  letter-spacing: 0.04em;
  margin-bottom: 10px;
}
.login-field:focus { outline: 1px solid rgba(255,59,59,0.35); border-color: rgba(255,59,59,0.25); }

.login-submit {
  display: block;
  width: 100%;
  margin-top: 6px;
  font-family: 'VT323', monospace;
  font-size: 1.5rem;
  letter-spacing: 0.12em;
  padding: 8px;
  background: var(--teal-a);
  border: 1px solid var(--teal-dim);
  border-radius: 6px;
  color: #fff;
  cursor: pointer;
  transition: background .2s;
}
.login-submit:hover { background: rgba(255,128,200,0.38); }
.login-submit:disabled { opacity: 0.5; cursor: not-allowed; }

.login-error {
  font-family: 'Space Mono', monospace;
  font-size: 0.65rem;
  color: var(--red);
  letter-spacing: 0.06em;
  margin-top: 10px;
  min-height: 1em;
}

/* ── Toast ───────────────────────────────────────────────────── */
#toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: #1a1a1a;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 20px;
  font-family: 'Space Mono', monospace;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: #fff;
  z-index: 999;
  transition: transform .3s cubic-bezier(.4,0,.2,1), opacity .3s;
  opacity: 0;
  white-space: nowrap;
}
#toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }
#toast.success { border-color: rgba(129,199,132,0.4); color: #81c784; }
#toast.error   { border-color: rgba(255,59,59,0.4);   color: var(--red); }

/* ── Last saved info ─────────────────────────────────────────── */
.last-saved {
  font-family: 'Space Mono', monospace;
  font-size: 0.58rem;
  color: rgba(255,255,255,0.12);
  letter-spacing: 0.08em;
  margin-bottom: 20px;
}

/* ── Announcements ───────────────────────────────────────────── */
.annc-form { display: flex; flex-direction: column; gap: 8px; margin-bottom: 12px; }
.annc-form-row { display: flex; gap: 8px; }

.annc-cat-select {
  font-family: 'VT323', monospace;
  font-size: 1.1rem;
  letter-spacing: 0.05em;
  padding: 5px 8px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: 5px;
  color: #fff;
  cursor: pointer;
  flex-shrink: 0;
}
.annc-cat-select:focus { outline: 1px solid rgba(255,59,59,0.35); border-color: rgba(255,59,59,0.25); }

.annc-body-input {
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  padding: 8px 10px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 5px;
  color: #fff;
  letter-spacing: 0.03em;
  resize: vertical;
  min-height: 60px;
}
.annc-body-input:focus { outline: 1px solid rgba(255,59,59,0.35); border-color: rgba(255,59,59,0.25); }

.annc-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px 12px;
  margin-bottom: 8px;
  display: flex;
  gap: 10px;
  align-items: flex-start;
}
.annc-card-body { flex: 1; min-width: 0; }
.annc-card-title {
  font-family: 'VT323', monospace;
  font-size: 1.2rem;
  letter-spacing: 0.06em;
  color: #fff;
  margin-bottom: 2px;
}
.annc-card-meta {
  font-family: 'Space Mono', monospace;
  font-size: 0.58rem;
  color: var(--fg-dim);
  letter-spacing: 0.06em;
  margin-bottom: 4px;
}
.annc-card-text {
  font-family: 'Space Mono', monospace;
  font-size: 0.65rem;
  color: var(--fg);
  letter-spacing: 0.03em;
  white-space: pre-wrap;
  word-break: break-word;
}
.annc-cat-pill {
  display: inline-block;
  font-family: 'VT323', monospace;
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  padding: 1px 7px;
  border-radius: 3px;
  margin-right: 6px;
}
.annc-cat-pill.general  { background: rgba(255,255,255,0.08); color: var(--fg-dim); }
.annc-cat-pill.homework { background: rgba(255,59,59,0.15);   color: var(--red); }
.annc-cat-pill.exam     { background: rgba(255,183,0,0.15);   color: #ffb700; }
.annc-cat-pill.event    { background: rgba(79,195,247,0.15);  color: #4fc3f7; }

.anncs-empty {
  font-size: 0.7rem;
  color: var(--fg-dim);
  letter-spacing: 0.08em;
  padding: 12px 0 8px;
}

/* ── Overrides ───────────────────────────────────────────────── */
.ovr-form { display: flex; flex-direction: column; gap: 8px; margin-bottom: 12px; }
.ovr-form-row { display: flex; gap: 8px; flex-wrap: wrap; }

.ovr-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px 12px;
  margin-bottom: 8px;
  display: flex;
  gap: 10px;
  align-items: flex-start;
}
.ovr-card-body { flex: 1; min-width: 0; }
.ovr-card-header {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 6px;
}
.ovr-card-date {
  font-family: 'Space Mono', monospace;
  font-size: 0.65rem;
  color: var(--fg-dim);
  letter-spacing: 0.06em;
}
.ovr-card-label {
  font-family: 'VT323', monospace;
  font-size: 1.15rem;
  color: #fff;
  letter-spacing: 0.06em;
}
.ovr-type-pill {
  display: inline-block;
  font-family: 'VT323', monospace;
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  padding: 1px 7px;
  border-radius: 3px;
}
.ovr-type-pill.holiday { background: rgba(255,59,59,0.15);  color: var(--red); }
.ovr-type-pill.custom  { background: rgba(79,195,247,0.15); color: #4fc3f7; }

.ovr-block-list { margin-top: 8px; padding-top: 8px; border-top: 1px solid var(--border); }
.ovr-span-counter {
  font-family: 'Space Mono', monospace;
  font-size: 0.6rem;
  color: var(--fg-dim);
  letter-spacing: 0.08em;
  margin: 6px 0 4px;
}
.ovr-span-counter.invalid { color: var(--red); }
.disabled-look { opacity: 0.4; cursor: not-allowed; }

/* ── Save indicator bar ──────────────────────────────────────── */
.save-bar-indicator {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 7px 20px;
  background: rgba(8,8,8,0.96);
  border-top: 2px solid #81c784;
  font-family: 'Space Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  color: #81c784;
  text-align: center;
  z-index: 300;
  transition: opacity .3s;
}
.save-bar-indicator.saving { border-top-color: #ffb700; color: #ffb700; }
.save-bar-indicator.error  { border-top-color: var(--red); color: var(--red); }

/* ── Hidden util ─────────────────────────────────────────────── */
.hidden { display: none !important; }