/* =============================================
   BCW SUIVI — Design System v2
   Navy #09529A · Orange #FF9E1B · Inter
   ============================================= */

:root {
  --navy: #09529A;
  --navy-dark: #063A73;
  --navy-light: #1a6cc4;
  --orange: #FF9E1B;
  --orange-hover: #e8900a;
  --bg: #F2F5FB;
  --card: #ffffff;
  --text: #1a2332;
  --text-secondary: #5a6a7e;
  --text-muted: #8a96a6;
  --border: #e2e8f0;
  --border-light: #f0f3f7;
  --success: #10b981;
  --success-bg: #ecfdf5;
  --error: #ef4444;
  --error-bg: #fef2f2;
  --danger: #dc2626;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-xs: 6px;
  --shadow: 0 1px 3px rgba(9, 82, 154, 0.08);
  --shadow-md: 0 4px 16px rgba(9, 82, 154, 0.1);
  --shadow-lg: 0 12px 40px rgba(9, 82, 154, 0.12);
  --transition: 0.2s ease;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
/* L'attribut HTML [hidden] doit toujours l'emporter sur le display CSS */
[hidden] { display: none !important; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ========== UTILITIES ========== */
.container { max-width: 720px; margin: 0 auto; padding: 0 20px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.938rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  line-height: 1;
}
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--orange); color: #fff; }
.btn-primary:hover { background: var(--orange-hover); }
.btn-outline {
  background: transparent;
  color: var(--navy);
  border: 1.5px solid var(--border);
}
.btn-outline:hover { border-color: var(--navy); background: rgba(9,82,154,0.04); }
.btn-danger { background: var(--danger); color: #fff; border: none; }
.btn-danger:hover { background: #b91c1c; }
.btn-sm   { padding: 8px 16px; font-size: 0.813rem; }
.btn-full { width: 100%; }

.btn-icon {
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  border-radius: 8px;
  color: var(--text-secondary);
  position: relative;
  transition: background var(--transition);
  display: flex;
  align-items: center;
}
.btn-icon:hover { background: var(--border-light); }

.link-subtle {
  color: rgba(255,255,255,0.7);
  font-size: 0.875rem;
  text-decoration: none;
}
.link-subtle:hover { color: #fff; text-decoration: underline; }

/* ========== FORMS ========== */
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: 0.813rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.938rem;
  color: var(--text);
  background: var(--card);
  transition: border-color var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--navy);
  box-shadow: 0 0 0 3px rgba(9,82,154,0.1);
}
.form-group textarea { resize: vertical; }
.form-error {
  color: var(--error);
  font-size: 0.813rem;
  margin-top: 12px;
  text-align: center;
}
.form-status {
  font-size: 0.875rem;
  margin-top: 16px;
  text-align: center;
  padding: 12px;
  border-radius: var(--radius-xs);
}
.form-status.is-success { background: var(--success-bg); color: var(--success); }
.form-status.is-error   { background: var(--error-bg); color: var(--error); }

.page-header {
  margin-bottom: 24px;
  padding-top: 8px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}
.page-header h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--navy-dark);
  margin-top: 8px;
}

/* ========== VIEWS ========== */
.view { display: none; }
.view.active { display: block; }

/* ========== LOGIN ========== */
#view-login {
  min-height: 100vh;
  display: none;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy) 50%, var(--navy-light) 100%);
  padding: 20px;
}
#view-login.active { display: flex; }

.login-container { width: 100%; max-width: 400px; }
.login-brand { text-align: center; margin-bottom: 40px; }
.login-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  background: var(--orange);
  color: #fff;
  font-size: 1.5rem;
  font-weight: 700;
  border-radius: 20px;
  margin-bottom: 16px;
  letter-spacing: 1px;
}
.login-brand h1 { color: #fff; font-size: 1.75rem; font-weight: 700; }
.login-tagline  { color: rgba(255,255,255,0.6); font-size: 0.938rem; margin-top: 4px; }

.login-form {
  background: var(--card);
  padding: 32px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
}
.login-form .form-group label { color: var(--text-secondary); }

.password-wrapper { position: relative; }
.password-wrapper input { padding-right: 48px; }
.password-toggle {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  padding: 4px;
  border-radius: 4px;
  transition: color var(--transition);
}
.password-toggle:hover { color: var(--navy); }

/* ========== TOPBAR ========== */
.topbar {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.topbar-inner {
  max-width: 720px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.topbar-brand { font-size: 1.125rem; font-weight: 700; color: var(--navy); }
.topbar-user {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* ========== NAV TABS ========== */
.app-nav {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  display: flex;
  max-width: 720px;
  margin: 0 auto;
  overflow-x: auto;
  scrollbar-width: none;
}
.app-nav::-webkit-scrollbar { display: none; }
.nav-tab {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 12px 20px;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  font-family: inherit;
  font-size: 0.813rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition);
  position: relative;
}
.nav-tab:hover { color: var(--navy); }
.nav-tab.active {
  color: var(--navy);
  border-bottom-color: var(--navy);
}
.nav-badge {
  background: var(--error);
  color: #fff;
  font-size: 0.625rem;
  font-weight: 700;
  padding: 1px 5px;
  border-radius: 10px;
  min-width: 16px;
  text-align: center;
}

/* ========== NOTIFICATION BADGE ========== */
.notif-badge {
  position: absolute;
  top: -2px;
  right: -2px;
  background: var(--error);
  color: #fff;
  font-size: 0.625rem;
  font-weight: 700;
  min-width: 16px;
  height: 16px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 3px;
}

.main-content { padding: 24px 0 80px; }

/* ========== STATS BAR (feature E) ========== */
.stats-bar {
  display: flex;
  gap: 12px;
  margin-bottom: 24px;
}
.stat-item {
  flex: 1;
  background: var(--card);
  border-radius: var(--radius-sm);
  padding: 16px;
  text-align: center;
  box-shadow: var(--shadow);
}
.stat-value {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--navy);
  line-height: 1.2;
}
.stat-label {
  display: block;
  font-size: 0.688rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 2px;
}

/* ========== STUDENTS GRID ========== */
.students-grid { display: grid; gap: 12px; }
.student-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow);
  transition: box-shadow var(--transition);
  cursor: pointer;
}
.student-card:hover { box-shadow: var(--shadow-md); }
.student-card-info h3 { font-size: 1rem; font-weight: 600; color: var(--text); }
.student-card-info span { font-size: 0.813rem; color: var(--text-muted); display: block; margin-top: 2px; }
.student-card-actions { display: flex; gap: 8px; align-items: center; flex-shrink: 0; }
.prof-pool-section { margin-top: 28px; }
.teacher-chip {
  display: inline-block;
  font-size: 0.688rem;
  font-weight: 600;
  color: var(--text-muted);
  background: var(--bg);
  border: 1px solid var(--border-light);
  padding: 2px 8px;
  border-radius: 10px;
  margin-top: 6px;
}
.owner-legend {
  display: flex;
  gap: 14px;
  align-items: center;
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin: 8px 0 12px;
}
.owner-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 999px;
  margin-right: 6px;
  border: 1px solid var(--border);
  vertical-align: middle;
}
.owner-dot.owner-bilal { background: #dbeafe; border-color: #93c5fd; }
.owner-dot.owner-sami { background: #dcfce7; border-color: #86efac; }
.owner-dot.owner-none { background: #ffffff; border-color: #cbd5e1; }

.student-card.owner-bilal {
  background: #eef5ff;
  border: 1px solid #c7ddff;
}
.student-card.owner-sami {
  background: #edfdf2;
  border: 1px solid #b7efc9;
}
.student-card.owner-none {
  background: #ffffff;
  border: 1px solid var(--border);
}
.student-card.owner-mixed {
  background: linear-gradient(90deg, #eef5ff 0%, #edfdf2 100%);
  border: 1px solid #b7d8f7;
}

/* ========== SESSIONS VIEW ========== */
.sessions-list {
  display: grid;
  gap: 12px;
}
.session-item {
  background: var(--card);
  border-radius: var(--radius);
  padding: 16px 18px;
  box-shadow: var(--shadow);
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: flex-start;
}
.session-item h3 {
  font-size: 1rem;
  color: var(--text);
}
.session-meta {
  font-size: 0.813rem;
  color: var(--text-secondary);
  margin-top: 4px;
}
.session-notes {
  font-size: 0.813rem;
  color: var(--text-muted);
  margin-top: 6px;
}
.session-actions {
  flex-shrink: 0;
}

/* ========== STUDENT HOME ========== */
.student-home-grid {
  display: grid;
  gap: 12px;
}
.student-home-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 16px 18px;
  box-shadow: var(--shadow);
}
.student-home-card h3 {
  font-size: 0.938rem;
  color: var(--navy-dark);
  margin-bottom: 8px;
}
.student-home-actions {
  display: flex;
  gap: 10px;
  margin-top: 14px;
  flex-wrap: wrap;
}
.student-card-actions-inline {
  margin-top: 10px;
}

/* ========== GROUPS VIEW ========== */
.groups-grid {
  display: grid;
  gap: 12px;
}
.section-subtitle {
  font-size: 0.938rem;
  color: var(--text-secondary);
  margin: 6px 0 10px;
  font-weight: 700;
}
.sessions-block {
  margin-bottom: 18px;
}
.group-card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px 18px;
}
.group-card.owner-bilal {
  background: #eef5ff;
  border: 1px solid #c7ddff;
}
.group-card.owner-sami {
  background: #edfdf2;
  border: 1px solid #b7efc9;
}
.group-card.owner-none {
  background: #ffffff;
  border: 1px solid var(--border);
}
.group-card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}
.group-card-head h3 {
  font-size: 1rem;
  color: var(--text);
}
.group-meta {
  font-size: 0.813rem;
  color: var(--text-secondary);
  margin-top: 4px;
}
.group-members {
  font-size: 0.813rem;
  color: var(--text-muted);
  margin-top: 8px;
}
.group-member-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-top: 6px;
}
.group-actions {
  margin-top: 10px;
  display: flex;
  gap: 8px;
  align-items: center;
}
.group-actions select {
  flex: 1;
  min-width: 0;
  padding: 9px 10px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-xs);
  font-family: inherit;
  font-size: 0.875rem;
  background: var(--card);
}

.badge-month {
  display: inline-block;
  font-size: 0.688rem;
  font-weight: 600;
  color: var(--navy);
  background: rgba(9,82,154,0.08);
  padding: 2px 8px;
  border-radius: 10px;
  margin-top: 4px;
}

/* ========== REPORT FORM ========== */
.report-student-info {
  background: rgba(9,82,154,0.06);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  margin-bottom: 24px;
  font-weight: 600;
  color: var(--navy);
}
.score-selector { display: flex; gap: 8px; }
.score-btn {
  width: 48px;
  height: 48px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--card);
  font-family: inherit;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition);
}
.score-btn:hover { border-color: var(--navy); color: var(--navy); }
.score-btn.active { background: var(--navy); border-color: var(--navy); color: #fff; }
.report-actions { display: flex; gap: 12px; margin-top: 8px; }
.report-actions .btn { flex: 1; }

/* ========== FILTERS (feature K) ========== */
.feed-filters {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.filter-input,
.filter-select {
  padding: 8px 12px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.813rem;
  color: var(--text);
  background: var(--card);
  outline: none;
  transition: border-color var(--transition);
}
.filter-input { flex: 1; min-width: 130px; }
.filter-input:focus,
.filter-select:focus { border-color: var(--navy); }

/* ========== MONTHLY SUMMARY (features F & Q) ========== */
.monthly-summary { margin-bottom: 16px; }
.summary-card {
  background: var(--card);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  box-shadow: var(--shadow);
  font-size: 0.875rem;
  color: var(--text-secondary);
  border-left: 4px solid var(--navy);
}
.summary-card.next-session {
  border-left-color: var(--orange);
  display: flex;
  align-items: center;
  gap: 12px;
}
.summary-card.next-session strong { display: block; color: var(--text); font-size: 0.938rem; }
.summary-card.next-session span  { font-size: 0.813rem; }
.summary-icon { font-size: 1.5rem; }

/* ========== REPORTS FEED ========== */
.reports-feed { display: grid; gap: 12px; }
.report-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  cursor: pointer;
  transition: box-shadow var(--transition);
  border-left: 4px solid var(--navy);
}
.report-card:hover { box-shadow: var(--shadow-md); }
.report-card.is-draft { border-left-color: var(--text-muted); opacity: 0.7; }
.report-card.is-new   { border-left-color: var(--orange); }

.report-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}
.report-card-date    { font-size: 0.813rem; color: var(--text-muted); font-weight: 500; }
.report-card-score   { background: var(--navy); color: #fff; font-size: 0.75rem; font-weight: 700; padding: 4px 10px; border-radius: 20px; }
.report-card-subjects { font-size: 0.813rem; color: var(--text-secondary); }
.report-card-footer  { display: flex; align-items: center; justify-content: space-between; margin-top: 10px; flex-wrap: wrap; gap: 6px; }
.report-card-btns    { display: flex; gap: 6px; }
.report-card-badge {
  display: inline-block;
  font-size: 0.688rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 3px 8px;
  border-radius: 4px;
}
.badge-draft     { background: #f1f5f9; color: var(--text-muted); }
.badge-published { background: var(--success-bg); color: var(--success); }
.badge-new {
  background: rgba(255,158,27,0.15);
  color: var(--orange-hover);
  font-size: 0.688rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 3px 8px;
  border-radius: 4px;
}

/* ========== REPORT DETAIL ========== */
.report-detail {
  background: var(--card);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow-md);
}
.report-detail-header {
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 20px;
  margin-bottom: 24px;
}
.report-detail-header h2  { font-size: 1.25rem; font-weight: 700; color: var(--navy-dark); margin-bottom: 4px; }
.report-detail-meta       { font-size: 0.813rem; color: var(--text-muted); }
.report-detail-score {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(9,82,154,0.08);
  color: var(--navy);
  font-weight: 700;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  margin-top: 12px;
  font-size: 0.938rem;
}
.report-section             { margin-bottom: 24px; }
.report-section h3          { font-size: 0.813rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; color: var(--text-muted); margin-bottom: 8px; }
.report-section p           { color: var(--text); font-size: 0.938rem; line-height: 1.7; white-space: pre-wrap; }
.report-section.strengths   { border-left: 3px solid var(--success); padding-left: 16px; }
.report-section.improvements { border-left: 3px solid var(--orange); padding-left: 16px; }
.report-section.resources   { border-left: 3px solid var(--navy); padding-left: 16px; }

/* ========== COMMENTS (feature S) ========== */
.comments-section {
  margin-top: 24px;
  background: var(--card);
  border-radius: var(--radius);
  padding: 24px 32px;
  box-shadow: var(--shadow);
}
.comments-title { font-size: 1rem; font-weight: 700; color: var(--navy-dark); margin-bottom: 16px; }
.comments-list  { display: grid; gap: 12px; margin-bottom: 20px; }
.comment-item   { padding: 12px 16px; background: var(--bg); border-radius: var(--radius-sm); }
.comment-meta   { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; flex-wrap: wrap; }
.comment-meta strong { font-size: 0.875rem; color: var(--text); }
.comment-role   { font-size: 0.688rem; background: rgba(9,82,154,0.1); color: var(--navy); padding: 2px 7px; border-radius: 10px; font-weight: 600; }
.comment-date   { font-size: 0.75rem; color: var(--text-muted); margin-left: auto; }
.comment-text   { font-size: 0.875rem; color: var(--text-secondary); line-height: 1.6; margin: 0; }
.no-comments    { font-size: 0.875rem; color: var(--text-muted); text-align: center; padding: 12px 0; }
.comment-form   { display: flex; gap: 10px; align-items: flex-end; }
.comment-form textarea {
  flex: 1;
  padding: 10px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.875rem;
  resize: none;
  outline: none;
  transition: border-color var(--transition);
}
.comment-form textarea:focus { border-color: var(--navy); }

/* ========== CALENDAR (feature R) ========== */
.calendar-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.cal-month-label { font-size: 1.125rem; font-weight: 700; color: var(--navy-dark); }
.cal-weekdays    { display: grid; grid-template-columns: repeat(7, 1fr); gap: 4px; margin-bottom: 4px; }
.cal-wd          { text-align: center; font-size: 0.688rem; font-weight: 700; color: var(--text-muted); text-transform: uppercase; padding: 8px 0; }
.cal-days        { display: grid; grid-template-columns: repeat(7, 1fr); gap: 4px; }
.cal-day {
  background: var(--card);
  border-radius: var(--radius-xs);
  padding: 8px 4px;
  text-align: center;
  cursor: pointer;
  min-height: 64px;
  transition: background var(--transition);
  box-shadow: var(--shadow);
}
.cal-day:hover    { background: rgba(9,82,154,0.04); }
.cal-day-empty    { background: transparent; box-shadow: none; cursor: default; }
.cal-today        { background: rgba(9,82,154,0.08); }
.cal-today .cal-day-num { color: var(--navy); font-weight: 700; }
.cal-has-events   { cursor: pointer; }
.cal-day-num      { font-size: 0.875rem; color: var(--text-secondary); font-weight: 500; display: block; margin-bottom: 4px; }
.cal-dots         { display: flex; flex-wrap: wrap; gap: 3px; justify-content: center; }
.cal-dot          { width: 6px; height: 6px; border-radius: 50%; }
.cal-dot-report   { background: var(--navy); }
.cal-dot-session  { background: var(--orange); }

.calendar-day-events {
  margin-top: 20px;
  background: var(--card);
  border-radius: var(--radius);
  padding: 20px 24px;
  box-shadow: var(--shadow-md);
}
.calendar-day-events h3 { font-size: 1rem; font-weight: 700; color: var(--navy-dark); margin-bottom: 14px; }
.cal-event {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
  font-size: 0.875rem;
}
.cal-event-report  { background: rgba(9,82,154,0.06); border-left: 3px solid var(--navy); }
.cal-event-session { background: rgba(255,158,27,0.1); border-left: 3px solid var(--orange); }
.cal-event-icon    { font-size: 1.25rem; flex-shrink: 0; }
.cal-event strong  { display: block; color: var(--text); margin-bottom: 2px; }
.cal-event-student { font-size: 0.75rem; color: var(--text-muted); }
.no-events         { font-size: 0.875rem; color: var(--text-muted); text-align: center; padding: 8px 0; }

/* ========== MESSAGES (feature T) ========== */
.messages-layout { display: flex; flex-direction: column; gap: 0; }
.conversations-list { display: grid; gap: 8px; }
.conversation-item {
  background: var(--card);
  border-radius: var(--radius);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: box-shadow var(--transition);
}
.conversation-item:hover { box-shadow: var(--shadow-md); }
.conv-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(9,82,154,0.1);
  color: var(--navy);
  font-weight: 700;
  font-size: 1.125rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.conv-info strong { display: block; font-size: 0.938rem; color: var(--text); }
.conv-student     { font-size: 0.75rem; color: var(--text-muted); }

.chat-panel {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  height: calc(100vh - 200px);
  min-height: 400px;
}
.chat-header {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-light);
  font-weight: 600;
  color: var(--text);
  flex-shrink: 0;
}
.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.chat-msg { display: flex; flex-direction: column; max-width: 72%; }
.chat-msg-mine    { align-self: flex-end; align-items: flex-end; }
.chat-msg-theirs  { align-self: flex-start; align-items: flex-start; }
.chat-bubble {
  padding: 10px 16px;
  border-radius: 18px;
  font-size: 0.875rem;
  line-height: 1.5;
  word-break: break-word;
}
.chat-msg-mine .chat-bubble   { background: var(--navy); color: #fff; border-bottom-right-radius: 4px; }
.chat-msg-theirs .chat-bubble { background: var(--bg); color: var(--text); border-bottom-left-radius: 4px; }
.chat-time { font-size: 0.688rem; color: var(--text-muted); margin-top: 3px; padding: 0 4px; }
.no-messages { text-align: center; color: var(--text-muted); font-size: 0.875rem; padding: 40px; }

.chat-form {
  display: flex;
  gap: 10px;
  padding: 16px 20px;
  border-top: 1px solid var(--border-light);
  flex-shrink: 0;
}
.chat-form input {
  flex: 1;
  padding: 10px 16px;
  border: 1.5px solid var(--border);
  border-radius: 24px;
  font-family: inherit;
  font-size: 0.875rem;
  outline: none;
  transition: border-color var(--transition);
}
.chat-form input:focus { border-color: var(--navy); }

/* ========== MODAL ========== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  backdrop-filter: blur(2px);
}
.modal {
  background: var(--card);
  border-radius: var(--radius);
  padding: 28px;
  width: 100%;
  max-width: 460px;
  box-shadow: var(--shadow-lg);
  animation: modalIn 0.18s ease;
}
@keyframes modalIn { from { transform: scale(0.95); opacity: 0; } to { transform: scale(1); opacity: 1; } }
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}
.modal-header h3 { font-size: 1.125rem; font-weight: 700; color: var(--navy-dark); }
.modal-close {
  background: none;
  border: none;
  font-size: 1.125rem;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 6px;
  transition: background var(--transition);
}
.modal-close:hover { background: var(--bg); }
.modal-subtitle { font-size: 0.875rem; font-weight: 600; color: var(--navy); margin-bottom: 16px; }
.modal-form .form-group { margin-bottom: 16px; }
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 20px; }

/* ========== EMPTY STATE ========== */
.empty-state { text-align: center; padding: 60px 20px; color: var(--text-secondary); }
.empty-icon  { font-size: 3rem; margin-bottom: 16px; }
.empty-sub   { font-size: 0.813rem; color: var(--text-muted); margin-top: 4px; }

/* ========== CHILD SELECTOR ========== */
.child-selector {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  background: var(--card);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
}
.child-selector label { font-size: 0.875rem; font-weight: 600; color: var(--text-secondary); white-space: nowrap; }
.child-selector select {
  flex: 1;
  padding: 8px 12px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-xs);
  font-family: inherit;
  font-size: 0.938rem;
  color: var(--text);
  background: var(--card);
  outline: none;
}

/* ========== SPINNER ========== */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2.5px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.loading-center { display: flex; justify-content: center; padding: 60px 0; }
.loading-center .spinner { border-color: rgba(9,82,154,0.15); border-top-color: var(--navy); width: 32px; height: 32px; }

/* ========== FEED SUBTITLE ========== */
.feed-subtitle { font-size: 0.875rem; color: var(--text-muted); margin-top: 2px; }

/* ========== INSCRIPTION ========== */
#view-register {
  min-height: 100vh;
  display: none;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy) 50%, var(--navy-light) 100%);
  padding: 20px;
}
#view-register.active { display: flex; }
.reg-step-label { color: rgba(255,255,255,0.75); font-size: 0.938rem; text-align: center; margin-bottom: 16px; }
.role-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 24px; }
.role-card {
  background: rgba(255,255,255,0.1);
  border: 2px solid rgba(255,255,255,0.2);
  border-radius: var(--radius);
  padding: 24px 16px;
  cursor: pointer;
  text-align: center;
  transition: all var(--transition);
  color: #fff;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}
.role-card:hover { background: rgba(255,255,255,0.18); border-color: var(--orange); transform: translateY(-2px); }
.role-icon  { font-size: 2rem; }
.role-label { font-size: 1rem; font-weight: 700; }
.role-sub   { font-size: 0.75rem; opacity: 0.7; }
.reg-login-link { text-align: center; font-size: 0.875rem; color: rgba(255,255,255,0.65); }
.reg-login-link a { color: #fff; font-weight: 600; text-decoration: underline; }
.btn-back {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 0.813rem;
  font-weight: 600;
  cursor: pointer;
  padding: 0;
  margin-bottom: 16px;
  font-family: inherit;
  transition: color var(--transition);
}
.btn-back:hover { color: var(--navy); }
.reg-role-badge { font-size: 0.875rem; font-weight: 700; color: var(--navy); margin-bottom: 20px; }
.radio-row  { display: flex; gap: 16px; }
.radio-opt  { display: flex; align-items: center; gap: 6px; font-size: 0.938rem; color: var(--text); cursor: pointer; font-weight: 500; }
.radio-opt input[type="radio"] { accent-color: var(--navy); width: 16px; height: 16px; cursor: pointer; }
.field-hint { font-size: 0.75rem; color: var(--text-muted); margin-top: 4px; }
.reg-success { text-align: center; padding: 40px 32px; }
.success-icon { font-size: 3rem; margin-bottom: 16px; }
.reg-success h2 { font-size: 1.5rem; font-weight: 700; color: var(--navy-dark); margin-bottom: 8px; }
.success-sub { color: var(--text-secondary); font-size: 0.938rem; line-height: 1.6; }

/* ========== RESPONSIVE ========== */
@media (max-width: 600px) {
  .stats-bar { gap: 8px; }
  .stat-item { padding: 12px 8px; }
  .stat-value { font-size: 1.25rem; }
  .cal-days { gap: 2px; }
  .cal-day  { min-height: 52px; padding: 6px 2px; }
  .cal-day-num { font-size: 0.75rem; }
  .messages-layout { gap: 0; }
  .chat-panel { height: calc(100vh - 180px); }
  .session-item { flex-direction: column; }
  .session-actions { align-self: flex-end; }
  .group-actions { flex-direction: column; align-items: stretch; }
  .student-home-actions .btn { width: 100%; }
}
@media (max-width: 480px) {
  .login-form  { padding: 24px 20px; }
  .report-detail  { padding: 24px 20px; }
  .comments-section { padding: 20px; }
  .report-actions { flex-direction: column; }
  .topbar-user span { display: none; }
  .modal { padding: 24px 20px; }
  .student-card { flex-direction: column; align-items: flex-start; gap: 12px; }
  .student-card-actions { align-self: flex-end; }
  .role-cards { grid-template-columns: 1fr; }
}

@media print {
  .topbar, .app-nav, .page-header button, #btn-logout { display: none; }
  .report-detail { box-shadow: none; padding: 0; }
  body { background: #fff; }
}