/* ════════════════════════════════════════════════
   OPENED — Internal Platform Stylesheet
   Design: Soft sage / mint studio theme
════════════════════════════════════════════════ */

/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #F7FAF9;
  --bg-2:      #FFFFFF;
  --card:      #FFFFFF;
  --card-2:    #EAF1EF;
  --border:    #DCE7E3;
  --accent:    #AEBCB5;
  --accent-dim:#8FA098;
  --accent-soft:#CFDFDB;
  --text:      #2B3331;
  --text-sub:  #6B7873;
  --text-mute: #9CA8A3;
  --red:       #D96C6C;
  --green:     #6FA988;
  --sidebar-w: 220px;
  --radius:    12px;
  --radius-sm: 8px;
  --transition: 0.18s ease;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body:    'Inter', sans-serif;
}

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

input, textarea, select, button {
  font-family: var(--font-body);
  font-size: 14px;
}

/* ── Screens ── */
.screen { display: none; min-height: 100vh; }
.screen.active { display: flex; }

/* ════════════════════════════════════
   AUTH SCREEN
════════════════════════════════════ */
#auth-screen {
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(ellipse 60% 50% at 30% 20%, rgba(143,160,152,0.06) 0%, transparent 60%),
    radial-gradient(ellipse 40% 60% at 80% 80%, rgba(143,160,152,0.03) 0%, transparent 50%),
    var(--bg);
}

.auth-container {
  width: 100%;
  max-width: 420px;
  padding: 24px;
}

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

.brand-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
  margin-bottom: 12px;
  animation: pulse-dot 2.5s ease-in-out infinite;
}

.brand-dot.small {
  width: 7px;
  height: 7px;
  margin: 0;
  flex-shrink: 0;
}

@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 0 4px var(--accent-soft); }
  50%       { box-shadow: 0 0 0 7px var(--accent-soft); }
}

.auth-brand h1 {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 700;
  letter-spacing: 6px;
  color: var(--text);
}

.auth-sub {
  color: var(--text-sub);
  font-size: 13px;
  margin-top: 6px;
}

/* Auth Forms */
.auth-form { display: none; }
.auth-form.active { display: block; }

.form-title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 24px;
  color: var(--text);
}

.form-notice {
  font-size: 12px;
  color: var(--accent-dim);
  background: rgba(143,160,152,0.05);
  border: 1px solid rgba(143,160,152,0.15);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  margin-bottom: 20px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-sub);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 11px 14px;
  color: var(--text);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-mute);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--accent-dim);
  box-shadow: 0 0 0 3px rgba(143,160,152,0.08);
}

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236B7873' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 16px;
  cursor: pointer;
}

.form-group select option {
  background: var(--card-2);
}

.form-error {
  font-size: 12px;
  color: var(--red);
  background: rgba(217,108,108,0.08);
  border: 1px solid rgba(217,108,108,0.2);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  margin-bottom: 14px;
}

.form-success {
  font-size: 12px;
  color: var(--green);
  background: rgba(111,169,136,0.08);
  border: 1px solid rgba(111,169,136,0.2);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  margin-bottom: 14px;
}

.form-switch {
  font-size: 13px;
  color: var(--text-sub);
  text-align: center;
  margin-top: 16px;
}

.form-switch .link {
  color: var(--accent-dim);
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ── Buttons ── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 100%;
  padding: 12px 20px;
  background: var(--accent);
  color: #2B3331;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.3px;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: opacity var(--transition), transform var(--transition), box-shadow var(--transition);
}

.btn-primary:hover {
  opacity: 0.9;
  box-shadow: 0 4px 20px rgba(143,160,152,0.3);
}

.btn-primary:active { transform: scale(0.98); }

.btn-primary.small {
  width: auto;
  padding: 8px 16px;
  font-size: 13px;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 20px;
  background: transparent;
  color: var(--text-sub);
  font-weight: 500;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
}

.btn-secondary:hover {
  color: var(--text);
  border-color: var(--text-mute);
}

.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-sub);
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}

.btn-icon svg { width: 18px; height: 18px; }
.btn-icon:hover { background: var(--card-2); color: var(--text); }

.hidden { display: none !important; }

/* ════════════════════════════════════
   APP LAYOUT
════════════════════════════════════ */
#app-screen {
  flex-direction: row;
  min-height: 100vh;
  position: relative;
}

/* ── Sidebar ── */
.sidebar {
  width: var(--sidebar-w);
  min-height: 100vh;
  background: var(--bg-2);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 100;
  transition: transform var(--transition);
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 22px 20px 18px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--text);
  border-bottom: 1px solid var(--border);
}

.sidebar-nav {
  flex: 1;
  padding: 16px 10px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-sub);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  text-align: left;
  width: 100%;
  transition: all var(--transition);
}

.nav-item svg { width: 17px; height: 17px; flex-shrink: 0; }

.nav-item:hover {
  background: var(--card);
  color: var(--text);
}

.nav-item.active {
  background: rgba(143,160,152,0.08);
  color: var(--accent-dim);
  font-weight: 600;
}

.sidebar-footer {
  border-top: 1px solid var(--border);
  padding: 14px 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
  min-width: 0;
}

.user-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--card-2);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 13px;
  color: var(--accent-dim);
  flex-shrink: 0;
}

.user-details { min-width: 0; }
.user-name {
  display: block;
  font-weight: 600;
  font-size: 13px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-role {
  display: block;
  font-size: 11px;
  color: var(--text-mute);
}

/* ── Main Content ── */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-w);
  min-height: 100vh;
  background: var(--bg);
  padding: 32px;
  overflow-y: auto;
}

/* ── Page ── */
.page { display: none; max-width: 900px; }
.page.active { display: block; }

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
  flex-wrap: wrap;
  gap: 12px;
}

.page-title {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
}

.page-meta {
  font-size: 13px;
  color: var(--text-sub);
}

/* ── Card ── */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
}

.card-title {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 16px;
}

/* ════════════════════════════════════
   CALENDAR
════════════════════════════════════ */
.calendar-card { user-select: none; }

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

.calendar-month {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
}

.calendar-days-header {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  text-align: center;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.5px;
  color: var(--text-mute);
  margin-bottom: 8px;
  text-transform: uppercase;
}

.calendar-days-header span:first-child { color: #C98B8B; }
.calendar-days-header span:last-child  { color: #8AA8C9; }

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
}

.cal-day {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-sub);
  cursor: default;
  position: relative;
  transition: all var(--transition);
}

.cal-day.other-month { color: var(--text-mute); }
.cal-day.sunday  { color: #C98B8B; }
.cal-day.saturday{ color: #8AA8C9; }

.cal-day.today {
  background: rgba(143,160,152,0.06);
  border: 1px solid rgba(143,160,152,0.25);
  color: var(--accent-dim);
  font-weight: 700;
  cursor: pointer;
}

.cal-day.today:hover {
  background: rgba(143,160,152,0.12);
}

.cal-day.checked {
  background: var(--accent);
  color: #2B3331;
  font-weight: 700;
  cursor: default;
}

/* Ripple on check */
.cal-day.checked::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 8px;
  animation: cal-ripple 0.5s ease-out;
}

@keyframes cal-ripple {
  0%   { box-shadow: 0 0 0 0 rgba(143,160,152,0.5); }
  100% { box-shadow: 0 0 0 16px rgba(143,160,152,0); }
}

.cal-day.past-checked {
  background: rgba(143,160,152,0.15);
  color: var(--accent-dim);
  font-size: 12px;
}

.past-checked::before {
  content: '✓';
  font-size: 10px;
  position: absolute;
  top: 2px;
  right: 3px;
}

/* ── Attendance Log ── */
.log-list { display: flex; flex-direction: column; gap: 8px; }

.log-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--card-2);
  border-radius: var(--radius-sm);
  font-size: 13px;
}

.log-item .log-date { color: var(--text); font-weight: 500; }
.log-item .log-sub  { color: var(--text-sub); font-size: 12px; }

.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
}

.badge-accent { background: rgba(143,160,152,0.12); color: var(--accent-dim); }
.badge-red    { background: rgba(217,108,108,0.12); color: var(--red); }
.badge-muted  { background: var(--card-2); color: var(--text-sub); }
.badge-green  { background: rgba(111,169,136,0.12); color: var(--green); }

/* ════════════════════════════════════
   ASSIGNMENTS / LYRICS
════════════════════════════════════ */
.assignments-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}

.assignment-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  cursor: pointer;
  transition: border-color var(--transition), transform var(--transition);
}

.assignment-card:hover {
  border-color: rgba(143,160,152,0.3);
  transform: translateY(-2px);
}

.assignment-card.expired {
  opacity: 0.55;
  cursor: not-allowed;
}

.assignment-card.submitted {
  border-color: rgba(143,160,152,0.4);
  background: rgba(143,160,152,0.03);
}

.assign-topic {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

.assign-desc {
  font-size: 12px;
  color: var(--text-sub);
  margin-bottom: 14px;
  line-height: 1.5;
}

.assign-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 11px;
  color: var(--text-mute);
}

/* ════════════════════════════════════
   NOTICE
════════════════════════════════════ */
.notice-list { display: flex; flex-direction: column; gap: 12px; }

.notice-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  cursor: pointer;
  transition: border-color var(--transition);
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.notice-item:hover { border-color: rgba(143,160,152,0.25); }

.notice-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(143,160,152,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}

.notice-content { flex: 1; min-width: 0; }
.notice-item-title {
  font-weight: 600;
  font-size: 14px;
  color: var(--text);
  margin-bottom: 4px;
}
.notice-item-preview {
  font-size: 12px;
  color: var(--text-sub);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.notice-item-date {
  font-size: 11px;
  color: var(--text-mute);
  white-space: nowrap;
}

/* Notice Detail */
.notice-detail-meta {
  font-size: 12px;
  color: var(--text-sub);
  margin-bottom: 16px;
}
.notice-detail-body {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text);
  white-space: pre-wrap;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
}

/* Comments */
.comment-section h4 {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-sub);
  margin-bottom: 12px;
}
.comment-list { display: flex; flex-direction: column; gap: 8px; margin-bottom: 16px; }
.comment-item {
  background: var(--card-2);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
}
.comment-author {
  font-size: 12px;
  font-weight: 600;
  color: var(--accent-dim);
  margin-bottom: 3px;
}
.comment-text { font-size: 13px; color: var(--text); }
.comment-time { font-size: 11px; color: var(--text-mute); margin-top: 4px; }

.comment-input-row {
  display: flex;
  gap: 8px;
}
.comment-input-row input {
  flex: 1;
  background: var(--card-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  color: var(--text);
  outline: none;
  transition: border-color var(--transition);
}
.comment-input-row input:focus { border-color: var(--accent-dim); }
.comment-input-row input::placeholder { color: var(--text-mute); }

/* ════════════════════════════════════
   ADMIN
════════════════════════════════════ */
.admin-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0;
}

.admin-tab {
  padding: 10px 18px;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-sub);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  margin-bottom: -1px;
}

.admin-tab:hover { color: var(--text); }
.admin-tab.active { color: var(--accent-dim); border-bottom-color: var(--accent-dim); }

.admin-tab-content { display: none; }
.admin-tab-content.active { display: block; }

/* Table */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.data-table th {
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--text-mute);
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}

.data-table td {
  padding: 12px 12px;
  color: var(--text);
  border-bottom: 1px solid rgba(42,42,56,0.5);
  vertical-align: middle;
}

.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: rgba(255,255,255,0.02); }

/* Admin attendance / lyrics lists */
.admin-attendance-list,
.admin-lyrics-list { display: flex; flex-direction: column; gap: 14px; }

.admin-member-block {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
}

.admin-member-block h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.attendance-dots {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

.att-dot {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: rgba(143,160,152,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  color: var(--accent-dim);
  font-weight: 600;
}

/* Lyrics submission display */
.lyrics-submission {
  background: var(--card-2);
  border-radius: var(--radius-sm);
  padding: 14px;
  margin-top: 6px;
  font-size: 13px;
  color: var(--text);
  line-height: 1.8;
  white-space: pre-wrap;
}

/* Settings */
.settings-card { max-width: 480px; }

/* ════════════════════════════════════
   MODAL
════════════════════════════════════ */
.modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(4px);
}

.modal-box {
  position: relative;
  width: 100%;
  max-width: 480px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  z-index: 1;
  animation: modal-in 0.2s ease;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-box.wide { max-width: 600px; }

@keyframes modal-in {
  from { opacity: 0; transform: scale(0.96) translateY(8px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.modal-header h3 {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
}

.modal-meta {
  font-size: 12px;
  color: var(--text-sub);
  margin-bottom: 16px;
}

.modal-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 20px;
}

/* ════════════════════════════════════
   FLOATING SETTINGS BTN
════════════════════════════════════ */
.floating-settings {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text-sub);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  z-index: 99;
}
.floating-settings svg { width: 18px; height: 18px; }
.floating-settings:hover {
  color: var(--accent-dim);
  border-color: rgba(143,160,152,0.3);
  box-shadow: 0 4px 16px rgba(43,51,49,0.1);
}

/* ── Sidebar Toggle (mobile) ── */
.sidebar-toggle {
  display: none;
  position: fixed;
  top: 16px;
  left: 16px;
  z-index: 101;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text-sub);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}
.sidebar-toggle svg { width: 18px; height: 18px; }

/* ── Toast ── */
.toast {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--card-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 12px 24px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 500;
  z-index: 999;
  white-space: nowrap;
  box-shadow: 0 8px 24px rgba(43,51,49,0.12);
  animation: toast-in 0.25s ease;
}

@keyframes toast-in {
  from { opacity: 0; bottom: 60px; }
  to   { opacity: 1; bottom: 80px; }
}

/* ── Empty state ── */
.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-mute);
  font-size: 13px;
}

/* ════════════════════════════════════
   RESPONSIVE
════════════════════════════════════ */
@media (max-width: 720px) {
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open {
    transform: translateX(0);
    box-shadow: 4px 0 24px rgba(43,51,49,0.1);
  }
  .sidebar-toggle { display: flex; }
  .main-content {
    margin-left: 0;
    padding: 20px 16px;
    padding-top: 64px;
  }
  .assignments-grid {
    grid-template-columns: 1fr;
  }
  .modal-box { padding: 20px; }
  .admin-tabs { overflow-x: auto; }
  .data-table { font-size: 12px; }
  .data-table th, .data-table td { padding: 8px; }
}