/* ── Tutor Study Planner – Frontend Styles ─────────────── */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=DM+Mono:wght@400;500&display=swap');

:root {
  --tsp-primary:     #4f46e5;
  --tsp-primary-h:   #4338ca;
  --tsp-primary-lt:  #eef2ff;
  --tsp-accent:      #f59e0b;
  --tsp-success:     #10b981;
  --tsp-danger:      #ef4444;
  --tsp-bg:          #f8fafc;
  --tsp-card:        #ffffff;
  --tsp-border:      #e2e8f0;
  --tsp-text:        #0f172a;
  --tsp-muted:       #64748b;
  --tsp-radius:      16px;
  --tsp-shadow:      0 4px 24px rgba(15,23,42,.08);
  --tsp-shadow-lg:   0 16px 48px rgba(15,23,42,.14);
  --tsp-font:        'Plus Jakarta Sans', sans-serif;
  --tsp-mono:        'DM Mono', monospace;
  --tsp-trans:       .2s cubic-bezier(.4,0,.2,1);
}

/* ── Reset ─────────────────────────────────────────────── */
.tsp-wrapper *, .tsp-wrapper *::before, .tsp-wrapper *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ── Wrapper ───────────────────────────────────────────── */
.tsp-wrapper {
  font-family: var(--tsp-font);
  color: var(--tsp-text);
  background: var(--tsp-bg);
  min-height: 60vh;
  padding: 0 0 60px;
}

/* ── Header ────────────────────────────────────────────── */
.tsp-header {
  background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
  padding: 0 24px;
  box-shadow: 0 2px 12px rgba(79,70,229,.3);
}
.tsp-header-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
}
.tsp-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-weight: 800;
  font-size: 1.2rem;
  letter-spacing: -.02em;
}
.tsp-logo svg { width: 22px; height: 22px; }

/* ── Buttons ───────────────────────────────────────────── */
.tsp-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 10px;
  font-family: var(--tsp-font);
  font-weight: 600;
  font-size: .9rem;
  cursor: pointer;
  transition: all var(--tsp-trans);
  border: 2px solid transparent;
  text-decoration: none;
}
.tsp-btn svg { width: 16px; height: 16px; }
.tsp-btn-primary {
  background: #fff;
  color: var(--tsp-primary);
  border-color: transparent;
}
.tsp-btn-primary:hover { background: var(--tsp-primary-lt); transform: translateY(-1px); }
.tsp-btn-outline {
  background: transparent;
  color: var(--tsp-primary);
  border-color: var(--tsp-primary);
}
.tsp-btn-outline:hover { background: var(--tsp-primary-lt); }
.tsp-btn-full { width: 100%; justify-content: center; background: var(--tsp-primary); color: #fff; }
.tsp-btn-full:hover { background: var(--tsp-primary-h); transform: translateY(-1px); }
.tsp-icon-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  border-radius: 8px;
  color: var(--tsp-muted);
  transition: all var(--tsp-trans);
  display: flex;
  align-items: center;
}
.tsp-icon-btn svg { width: 16px; height: 16px; }
.tsp-icon-btn:hover { background: #fee2e2; color: var(--tsp-danger); }

/* ── Plans Section ─────────────────────────────────────── */
.tsp-plans-section {
  max-width: 1100px;
  margin: 40px auto;
  padding: 0 24px;
}
.tsp-section-title {
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -.03em;
  margin-bottom: 24px;
  color: var(--tsp-text);
}
.tsp-plans-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}

/* ── Plan Card ─────────────────────────────────────────── */
.tsp-plan-card {
  background: var(--tsp-card);
  border-radius: var(--tsp-radius);
  padding: 24px;
  box-shadow: var(--tsp-shadow);
  border: 1px solid var(--tsp-border);
  transition: transform var(--tsp-trans), box-shadow var(--tsp-trans);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.tsp-plan-card:hover { transform: translateY(-3px); box-shadow: var(--tsp-shadow-lg); }
.tsp-plan-card-header { display: flex; align-items: center; justify-content: space-between; }

/* Duration badges */
.tsp-duration-badge {
  font-family: var(--tsp-mono);
  font-size: .72rem;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: 6px;
  letter-spacing: .05em;
}
.tsp-dur-2  { background: #eff6ff; color: #1d4ed8; }
.tsp-dur-6  { background: #fdf4ff; color: #9333ea; }
.tsp-dur-12 { background: #fff7ed; color: #c2410c; }

.tsp-plan-title { font-size: 1rem; font-weight: 700; line-height: 1.3; }
.tsp-plan-course { font-size: .82rem; color: var(--tsp-muted); }
.tsp-plan-dates {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .8rem;
  color: var(--tsp-muted);
  font-family: var(--tsp-mono);
}
.tsp-plan-dates svg { width: 12px; height: 12px; flex-shrink: 0; }
.tsp-progress-bar {
  height: 6px;
  background: var(--tsp-border);
  border-radius: 99px;
  overflow: hidden;
}
.tsp-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--tsp-primary), #7c3aed);
  border-radius: 99px;
  transition: width .5s ease;
}
.tsp-progress-label { font-size: .78rem; color: var(--tsp-muted); }

/* ── Empty State ───────────────────────────────────────── */
.tsp-empty-state {
  text-align: center;
  padding: 60px 20px;
  background: var(--tsp-card);
  border-radius: var(--tsp-radius);
  border: 2px dashed var(--tsp-border);
  color: var(--tsp-muted);
}
.tsp-empty-icon { font-size: 2.5rem; margin-bottom: 12px; }

/* ── Modals ────────────────────────────────────────────── */
.tsp-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15,23,42,.5);
  backdrop-filter: blur(4px);
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  animation: tspFadeIn .2s ease;
}
.tsp-modal-overlay[hidden] { display: none; }

@keyframes tspFadeIn { from { opacity: 0; } to { opacity: 1; } }

.tsp-modal {
  background: var(--tsp-card);
  border-radius: 20px;
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--tsp-shadow-lg);
  animation: tspSlideUp .25s cubic-bezier(.34,1.56,.64,1);
}
.tsp-modal-wide { max-width: 860px; }
@keyframes tspSlideUp { from { transform: translateY(30px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

.tsp-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 24px 0;
}
.tsp-modal-header h3 { font-size: 1.1rem; font-weight: 800; }
.tsp-modal-body { padding: 20px 24px 24px; }

/* ── Form Elements ─────────────────────────────────────── */
.tsp-form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.tsp-form-group label { font-size: .82rem; font-weight: 600; color: var(--tsp-muted); text-transform: uppercase; letter-spacing: .06em; }
.tsp-form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.tsp-input, .tsp-select {
  padding: 10px 14px;
  border: 2px solid var(--tsp-border);
  border-radius: 10px;
  font-family: var(--tsp-font);
  font-size: .9rem;
  color: var(--tsp-text);
  background: #fff;
  transition: border-color var(--tsp-trans);
  width: 100%;
}
.tsp-input:focus, .tsp-select:focus { outline: none; border-color: var(--tsp-primary); }

/* Duration Buttons */
.tsp-duration-buttons { display: flex; gap: 8px; }
.tsp-dur-btn {
  flex: 1;
  padding: 10px;
  border: 2px solid var(--tsp-border);
  border-radius: 10px;
  background: #fff;
  font-family: var(--tsp-font);
  font-weight: 600;
  font-size: .85rem;
  cursor: pointer;
  transition: all var(--tsp-trans);
  color: var(--tsp-muted);
}
.tsp-dur-btn.active { border-color: var(--tsp-primary); background: var(--tsp-primary-lt); color: var(--tsp-primary); }
.tsp-dur-btn:hover:not(.active) { border-color: #cbd5e1; }

/* Day Picker */
.tsp-day-picker { display: flex; gap: 6px; flex-wrap: wrap; }
.tsp-day-label {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  border: 2px solid var(--tsp-border);
  font-weight: 600;
  font-size: .8rem;
  cursor: pointer;
  transition: all var(--tsp-trans);
  color: var(--tsp-muted);
  user-select: none;
}
.tsp-day-label input { display: none; }
.tsp-day-label.active { border-color: var(--tsp-primary); background: var(--tsp-primary-lt); color: var(--tsp-primary); }
.tsp-day-label:hover:not(.active) { border-color: #94a3b8; }

/* Range */
.tsp-range-wrap { display: flex; align-items: center; gap: 12px; }
.tsp-range { flex: 1; accent-color: var(--tsp-primary); }
#tsp-daily-lessons-val { font-weight: 700; font-family: var(--tsp-mono); min-width: 20px; }

/* ── Alert ─────────────────────────────────────────────── */
.tsp-alert { padding: 12px 16px; border-radius: 10px; font-size: .87rem; margin-bottom: 12px; }
.tsp-alert-error { background: #fef2f2; color: #b91c1c; border: 1px solid #fecaca; }
.tsp-alert-success { background: #f0fdf4; color: #166534; border: 1px solid #bbf7d0; }

/* ── Spinner ───────────────────────────────────────────── */
.tsp-spinner {
  width: 32px; height: 32px;
  border: 3px solid var(--tsp-border);
  border-top-color: var(--tsp-primary);
  border-radius: 50%;
  animation: tspSpin .7s linear infinite;
  margin: 40px auto;
}
.tsp-spinner-sm {
  display: inline-block;
  width: 14px; height: 14px;
  border: 2px solid rgba(255,255,255,.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: tspSpin .7s linear infinite;
}
@keyframes tspSpin { to { transform: rotate(360deg); } }

/* ── Timeline ──────────────────────────────────────────── */
.tsp-timeline { padding: 0 4px; }
.tsp-week-block { margin-bottom: 32px; }
.tsp-week-label {
  font-size: .75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--tsp-muted);
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--tsp-border);
}
.tsp-timeline-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: 10px;
  margin-bottom: 6px;
  transition: background var(--tsp-trans);
  cursor: pointer;
}
.tsp-timeline-item:hover { background: var(--tsp-primary-lt); }
.tsp-timeline-item.tsp-done { opacity: .6; }
.tsp-timeline-item.tsp-done .tsp-item-title { text-decoration: line-through; }

.tsp-item-check {
  width: 20px; height: 20px;
  border-radius: 50%;
  border: 2px solid var(--tsp-border);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--tsp-trans);
}
.tsp-done .tsp-item-check { background: var(--tsp-success); border-color: var(--tsp-success); color: #fff; }

.tsp-item-badge {
  font-size: .68rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 5px;
  flex-shrink: 0;
  font-family: var(--tsp-mono);
  text-transform: uppercase;
}
.tsp-type-lesson     { background: #eff6ff; color: #1d4ed8; }
.tsp-type-quiz       { background: #fdf4ff; color: #9333ea; }
.tsp-type-assignment { background: #fff7ed; color: #c2410c; }
.tsp-type-course     { background: #f0fdf4; color: #166534; }

.tsp-item-title { font-size: .9rem; font-weight: 500; flex: 1; }
.tsp-item-date { font-size: .75rem; color: var(--tsp-muted); font-family: var(--tsp-mono); flex-shrink: 0; }

/* ── Login Notice ──────────────────────────────────────── */
.tsp-login-notice {
  padding: 20px;
  background: var(--tsp-primary-lt);
  border-radius: 12px;
  color: var(--tsp-primary);
  font-weight: 500;
}

/* ── Responsive ────────────────────────────────────────── */
@media (max-width: 600px) {
  .tsp-form-row { grid-template-columns: 1fr; }
  .tsp-modal-wide { max-width: 100%; }
  .tsp-plans-grid { grid-template-columns: 1fr; }
}