/* GPA PAGE — SCHOOL + PC LAYOUT */
.gpa-wrapper {
  max-width: 560px;
  margin: 0 auto;
  padding: 0 16px;
  width: 100%;
  box-sizing: border-box;
}

.gpa-card {
  background: #ffffff;
  border-radius: 24px;
  padding: 24px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, .08);
  border: 1px solid rgba(0, 0, 0, .05);
  width: 100%;
  position: relative;
  z-index: 1;
}

/* SYSTEM SELECTOR */
.system-selector {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  font-size: .95rem;
  color: #2d2a26;
}

.system-selector label {
  font-weight: 600;
  white-space: nowrap;
  margin: 0;
}

.system-selector select {
  flex: 1;
  padding: 12px 14px;
  border: 2px solid #e2e8f0;
  border-radius: 14px;
  font-size: 1rem;
  background: white;
  appearance: none;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6,9 12,15 18,9'%3e%3c/polyline%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 16px;
  padding-right: 40px;
}

.system-selector select:focus {
  outline: none;
  border-color: #06a87c;
  box-shadow: 0 0 0 4px rgba(6, 168, 124, .1);
}

/* ADD SUBJECT */
.add-course {
  margin-bottom: 16px;
}

.input-row {
  display: flex;
  gap: 12px;
  align-items: stretch;
}

.input-box {
  flex: 1;
  min-width: 0;
}

.input-box input,
.input-box select {
  width: 100%;
  padding: 16px;
  border: 2px solid #e2e8f0;
  border-radius: 16px;
  font-size: 1.1rem;
  font-family: inherit;
  transition: all .2s ease;
  box-sizing: border-box;
}

.input-box input::placeholder {
  color: #94a3b8;
}

.input-box input:focus,
.input-box select:focus {
  outline: none;
  border-color: #06a87c;
  box-shadow: 0 0 0 4px rgba(6, 168, 124, .1);
}

.add-circle {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, #06a87c, #2fd8ab);
  color: white;
  border: none;
  font-size: 1.8rem;
  font-weight: bold;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all .18s ease;
  box-shadow: 0 6px 16px rgba(6, 168, 124, .2);
  flex-shrink: 0;
}

.add-circle:active {
  transform: scale(0.92);
}

/* SUBJECTS LIST */
.courses-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-height: 300px;
  overflow-y: auto;
  padding-right: 4px;
  margin-bottom: 16px;
  scrollbar-width: thin;
  scrollbar-color: #94a3b8 #f1f5f9;
}

.courses-list::-webkit-scrollbar {
  width: 6px;
}
.courses-list::-webkit-scrollbar-track {
  background: #f1f5f9;
  border-radius: 3px;
}
.courses-list::-webkit-scrollbar-thumb {
  background: #94a3b8;
  border-radius: 3px;
}

.course-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  background: #f8fafc;
  border-radius: 16px;
  border: 1px solid #e2e8f0;
  font-weight: 600;
  color: #2d2a26;
  word-break: break-word;
}

.remove-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #fee2e2;
  color: #dc2626;
  border: none;
  font-size: 1.3rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .18s ease;
  flex-shrink: 0;
}

.remove-btn:hover {
  background: #fecaca;
}

/* RESULT */
.result-box {
  padding-top: 16px;
  border-top: 1px dashed #cbd5e1;
}

.result-line {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  font-size: 1rem;
}

.result-line span {
  color: #64748b;
}

.result-line strong {
  font-size: 2.4rem;
  color: #f9734b;
  font-weight: 700;
}

.reset-text {
  background: none;
  border: none;
  color: #dc2626;
  font-size: .95rem;
  cursor: pointer;
  text-decoration: underline;
  margin-top: 8px;
  padding: 0;
  font-family: inherit;
}

.reset-text:hover {
  color: #b91c1c;
}

/* HINT */
.hint {
  margin-top: 16px;
  padding: 14px;
  background: #f0fdfa;
  border-radius: 14px;
  font-size: .95rem;
  color: #065f46;
  text-align: center;
  border: 1px solid #86efac;
}

/* MOBILE RESPONSIVE */
@media (max-width: 1023px) {
  .gpa-layout-pc { display: none !important; }
  .gpa-wrapper { padding: 0 12px; }
  .gpa-card { 
    padding: 20px; 
    border-radius: 0 !important; /* CRITICAL: NO ROUNDED CORNERS ON MOBILE */
    overflow: visible !important;
    box-shadow: 0 10px 30px rgba(0, 0, 0, .08);
  }
  .input-row { flex-direction: column; gap: 10px; }
  .add-circle { width: 64px; height: 64px; font-size: 2rem; margin: 0 auto; }
  .system-selector { flex-direction: column; align-items: stretch; gap: 8px; }
  .result-line strong { font-size: 2.8rem; }
}

/* ================================================= PC LAYOUT (≥1024px) ================================================= */
@media (min-width: 1024px) {
  .gpa-wrapper {
    max-width: 100%;
    padding: 0;
  }

  .gpa-card {
    width: 75%;
    margin-right: 25%;
    padding: 32px;
    border-radius: 0;
    border-right: none;
    box-shadow: 0 10px 30px rgba(0, 0, 0, .08);
  }

  .gpa-layout-mobile { display: none !important; }
  .gpa-layout-pc { display: flex; gap: 32px; align-items: flex-start; }

  .input-column { flex: 1; min-width: 300px; max-width: 420px; }
  .info-column { flex: 1; min-width: 300px; display: flex; flex-direction: column; gap: 20px; }

  .instructions {
    background: #f8fafc;
    padding: 20px;
    border-radius: 16px;
    border: 1px solid #e2e8f0;
    font-size: .95rem;
    color: #475569;
  }

  .instructions h3 {
    margin: 0 0 12px;
    font-size: 1.1rem;
    color: #1e293b;
  }

  .instructions ol { margin: 0; padding-left: 20px; }
  .instructions li { margin-bottom: 8px; line-height: 1.5; }

  .courses-list-pc {
    flex: 1;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 16px;
    padding: 16px;
    max-height: 380px;
    overflow-y: auto;
  }

  .result-box-pc { margin-top: 24px; padding-top: 16px; border-top: 1px dashed #cbd5e1; }
  .result-line strong { font-size: 2.6rem !important; }

  .gpa-card::after {
    content: '';
    position: absolute;
    top: 0; right: -1px; bottom: 0;
    width: 1px;
    background: #e2e8f0;
  }
}

/* === FINAL FIX: MOBILE DROPDOWN 100% VISIBLE === */
@media (max-width: 1023px) {
  .gpa-card {
    border-radius: 0 !important;
    overflow: visible !important;
    position: relative;
    z-index: 1;
  }

  .input-box select {
    position: relative;
    z-index: 9999 !important;
    background: white !important;
    -webkit-appearance: none;
    appearance: none;
    border-radius: 16px !important;
  }

  .gpa-wrapper,
  .gpa-layout-mobile,
  .add-course,
  .input-row,
  .input-box {
    overflow: visible !important;
  }

  /* Remove any overlay interference */
  .sidebar-overlay {
    pointer-events: none !important;
  }
  .sidebar-overlay.open {
    pointer-events: auto !important;
  }
}

/* === CUSTOM DROPDOWN FOR MOBILE === */
@media (max-width: 1023px) {
  .custom-dropdown {
    position: relative;
    width: 100%;
  }

  .grade-display {
    width: 100%;
    padding: 16px;
    border: 2px solid #e2e8f0;
    border-radius: 16px;
    font-size: 1.1rem;
    font-family: inherit;
    background: white;
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all .2s ease;
  }

  .grade-display::after {
    content: '▼';
    font-size: 0.8rem;
    color: #64748b;
    margin-left: 8px;
  }

  .grade-display:focus {
    outline: none;
    border-color: #06a87c;
    box-shadow: 0 0 0 4px rgba(6, 168, 124, .1);
  }

  .grade-options {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    border: 2px solid #e2e8f0;
    border-top: none;
    border-radius: 0 0 16px 16px;
    max-height: 200px;
    overflow-y: auto;
    z-index: 9999;
    margin: 0;
    padding: 0;
    list-style: none;
    box-shadow: 0 10px 20px rgba(0,0,0,.1);
  }

  .grade-options li {
    padding: 12px 16px;
    cursor: pointer;
    font-size: 1rem;
    border-bottom: 1px solid #f1f5f9;
  }

  .grade-options li:last-child {
    border-bottom: none;
  }

  .grade-options li:hover,
  .grade-options li:focus {
    background: #f0fdfa;
    outline: none;
  }

  .grade-options li[aria-selected="true"] {
    background: #d1fae5;
    font-weight: 600;
  }
}

@media (max-width: 1024px) {
  .gpa-layout-mobile {
    padding-bottom: 90px; /* or 100px if footer is tall */
    margin-bottom: 30px;
  }
}

.sidebar-overlay {
  position: fixed;
  inset: 0; /* top:0; right:0; bottom:0; left:0 */
  background: rgba(0,0,0,0.5);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  z-index: 99;
}

.sidebar-overlay.active {
  opacity: 1;
  pointer-events: auto;
}