/* =====================================================================
   أرشيف الطلبة - كلية هندسة العمليات النفطية
   هوية: غرفة السيطرة النفطية (كحلي بترولي عميق + ذهبي)
   ===================================================================== */

:root {
  --bg:        #081420;
  --bg-2:      #0b1b2b;
  --panel:     #0e2233;
  --panel-2:   #123049;
  --line:      rgba(212, 168, 67, 0.18);
  --line-soft: rgba(139, 163, 181, 0.15);
  --gold:      #d4a843;
  --gold-2:    #f0c060;
  --cyan:      #37b6c9;
  --cyan-2:    #5fd4e4;
  --danger:    #e05b5b;
  --success:   #4fbf7e;
  --text:      #e8eef4;
  --muted:     #8ba3b5;
  --radius:    14px;
  --shadow:    0 18px 50px rgba(0, 0, 0, 0.45);
  --font-display: 'Cairo', sans-serif;
  --font-body:    'Tajawal', sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  min-height: 100vh;
}

h1, h2, h3, h4 { font-family: var(--font-display); margin: 0; }

[hidden] { display: none !important; }

/* ============================ أزرار عامة ============================ */

.btn {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  border: none;
  border-radius: 10px;
  padding: 10px 20px;
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.15s ease;
  color: var(--bg);
}
.btn:active { transform: translateY(1px); }
.btn:focus-visible { outline: 2px solid var(--cyan-2); outline-offset: 2px; }

.btn-gold {
  background: linear-gradient(160deg, var(--gold-2), var(--gold));
  box-shadow: 0 6px 18px rgba(212, 168, 67, 0.25);
}
.btn-gold:hover { box-shadow: 0 8px 24px rgba(212, 168, 67, 0.4); }

.btn-cyan {
  background: linear-gradient(160deg, var(--cyan-2), var(--cyan));
  box-shadow: 0 6px 18px rgba(55, 182, 201, 0.25);
}
.btn-cyan:hover { box-shadow: 0 8px 24px rgba(55, 182, 201, 0.4); }

.btn-outline {
  background: transparent;
  color: var(--gold-2);
  border: 1.5px solid var(--gold);
}
.btn-outline:hover { background: rgba(212, 168, 67, 0.1); }

.btn-ghost {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--line-soft);
}
.btn-ghost:hover { color: var(--text); border-color: var(--muted); }

.btn-danger { background: var(--danger); color: #fff; }
.btn-sm { padding: 6px 14px; font-size: 0.85rem; }
.btn-block { width: 100%; margin-top: 18px; }

.btn:disabled { opacity: 0.55; cursor: wait; }

/* ============================ الحقول ============================ */

.field-label {
  display: block;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--gold-2);
  margin: 14px 0 6px;
}

.input {
  width: 100%;
  background: var(--bg-2);
  border: 1px solid var(--line-soft);
  border-radius: 10px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 11px 14px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.input:focus {
  outline: none;
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(212, 168, 67, 0.15);
}
.input::placeholder { color: var(--muted); opacity: 0.7; }

select.input option, select.input optgroup { background: var(--panel); color: var(--text); }

textarea.input { resize: vertical; min-height: 74px; }

.hint { color: var(--muted); font-size: 0.9rem; line-height: 1.7; margin: 0 0 6px; }

/* ============================ شاشة تسجيل الدخول ============================ */

.login-screen {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: radial-gradient(1100px 600px at 80% -10%, #123049 0%, var(--bg) 55%);
}

.login-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(55, 182, 201, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(55, 182, 201, 0.05) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(closest-side at 50% 40%, #000 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(closest-side at 50% 40%, #000 30%, transparent 100%);
}

.login-card {
  position: relative;
  width: min(400px, 100%);
  background: linear-gradient(180deg, var(--panel), var(--bg-2));
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 34px 30px;
  box-shadow: var(--shadow);
  text-align: center;
}

.login-emblem { margin-bottom: 8px; }

.login-title {
  font-size: 1.7rem;
  font-weight: 900;
  color: var(--gold-2);
  letter-spacing: 0.5px;
}

.login-subtitle {
  color: var(--muted);
  margin: 4px 0 12px;
  font-size: 0.95rem;
}

#loginForm { text-align: right; }

.login-error {
  margin-top: 14px;
  background: rgba(224, 91, 91, 0.12);
  border: 1px solid rgba(224, 91, 91, 0.45);
  color: #ffb3b3;
  border-radius: 10px;
  padding: 10px 14px;
  font-size: 0.9rem;
}

/* ============================ الشريط العلوي ============================ */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 14px clamp(14px, 4vw, 34px);
  background: linear-gradient(180deg, var(--panel), transparent);
  border-bottom: 1px solid var(--line);
  flex-wrap: wrap;
}

.topbar-brand { display: flex; align-items: center; gap: 12px; }

.brand-mark {
  width: 14px;
  height: 42px;
  border-radius: 4px;
  background: linear-gradient(180deg, var(--gold-2), var(--gold) 55%, var(--cyan));
  box-shadow: 0 0 14px rgba(212, 168, 67, 0.4);
}

.brand-title { font-family: var(--font-display); font-weight: 900; font-size: 1.15rem; color: var(--gold-2); }
.brand-sub { color: var(--muted); font-size: 0.8rem; }

.topbar-user { display: flex; align-items: center; gap: 12px; }
.user-name { color: var(--cyan-2); font-weight: 500; font-size: 0.9rem; }

/* ============================ الحاوية ============================ */

.container {
  max-width: 1500px;
  margin: 0 auto;
  padding: clamp(16px, 3vw, 30px);
}

/* ============================ الأزرار الرئيسية ============================ */

.main-actions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-bottom: 26px;
}

.dept-btn {
  display: flex;
  align-items: center;
  gap: 14px;
  background: linear-gradient(180deg, var(--panel), var(--bg-2));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 18px;
  color: var(--text);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  text-align: right;
  cursor: pointer;
  transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}
.dept-btn:hover {
  transform: translateY(-3px);
  border-color: var(--gold);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
}
.dept-btn:focus-visible { outline: 2px solid var(--cyan-2); outline-offset: 2px; }

.dept-btn.active { border-color: var(--gold); box-shadow: 0 0 0 2px rgba(212,168,67,.25) inset; }

.dept-gauge {
  flex: none;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 2.5px solid var(--gold);
  position: relative;
  background: radial-gradient(circle at 50% 60%, rgba(212,168,67,.15), transparent 70%);
}
.dept-gauge::after {
  content: '';
  position: absolute;
  bottom: 48%;
  right: 48%;
  width: 2.5px;
  height: 15px;
  background: var(--gold-2);
  transform-origin: bottom center;
  transform: rotate(38deg);
  border-radius: 2px;
}
.gauge-2 { border-color: var(--cyan); }
.gauge-2::after { background: var(--cyan-2); transform: rotate(-30deg); }

.dept-plus {
  flex: none;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 2.5px dashed var(--gold);
  display: grid;
  place-items: center;
  font-size: 1.6rem;
  color: var(--gold-2);
  line-height: 1;
}

.dept-btn-add { border-style: dashed; }

/* ============================ لوحة الماستر شيتات ============================ */

.masters-panel, .records-panel {
  background: linear-gradient(180deg, var(--panel), var(--bg-2));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(16px, 3vw, 26px);
  margin-bottom: 26px;
  box-shadow: var(--shadow);
}

.panel-title {
  font-size: 1.15rem;
  font-weight: 900;
  color: var(--gold-2);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.masters-groups {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
}

.master-group {
  background: rgba(0, 0, 0, 0.18);
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  padding: 14px;
}

.group-title {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.group-title::before {
  content: '';
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.group-morning { color: var(--gold-2); }
.group-morning::before { background: var(--gold); box-shadow: 0 0 8px var(--gold); }
.group-evening { color: var(--cyan-2); }
.group-evening::before { background: var(--cyan); box-shadow: 0 0 8px var(--cyan); }

.year-buttons { display: flex; flex-wrap: wrap; gap: 10px; }

.year-btn {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  background: var(--bg-2);
  color: var(--text);
  border: 1.5px solid var(--line-soft);
  border-radius: 10px;
  padding: 9px 16px;
  cursor: pointer;
  transition: all 0.15s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.year-btn:hover { border-color: var(--gold); color: var(--gold-2); }
.year-btn.active {
  background: linear-gradient(160deg, var(--gold-2), var(--gold));
  color: var(--bg);
  border-color: var(--gold);
}
.year-btn .count {
  font-size: 0.72rem;
  background: rgba(255, 255, 255, 0.14);
  border-radius: 20px;
  padding: 1px 8px;
}
.year-btn.active .count { background: rgba(0, 0, 0, 0.18); }

.empty-note { color: var(--muted); font-size: 0.88rem; padding: 6px 2px; }

/* ============================ لوحة الجدول ============================ */

.records-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}
.records-header .panel-title { margin: 0; border: none; padding: 0; }
.records-actions { display: flex; gap: 10px; flex-wrap: wrap; }

.table-wrap { overflow-x: auto; border-radius: 10px; }

/* DataTables RTL + هوية داكنة */
table.dataTable {
  font-family: var(--font-body);
  font-size: 0.88rem;
  border-collapse: collapse !important;
  color: var(--text);
}
table.dataTable thead th {
  background: var(--panel-2);
  color: var(--gold-2);
  font-family: var(--font-display);
  font-weight: 700;
  border-bottom: 2px solid var(--gold) !important;
  white-space: nowrap;
  padding: 10px 12px;
  text-align: right;
}
table.dataTable tbody td {
  border-bottom: 1px solid var(--line-soft);
  padding: 8px 12px;
  white-space: nowrap;
  text-align: right;
}
table.dataTable tbody tr { background: transparent; }
table.dataTable tbody tr:nth-child(even) { background: rgba(255, 255, 255, 0.025); }
table.dataTable tbody tr:hover { background: rgba(212, 168, 67, 0.07); }

table.dataTable.no-footer { border-bottom: 1px solid var(--line); }

.dataTables_wrapper { color: var(--muted); }
.dataTables_wrapper .dataTables_length,
.dataTables_wrapper .dataTables_filter,
.dataTables_wrapper .dataTables_info,
.dataTables_wrapper .dataTables_paginate { color: var(--muted) !important; font-size: 0.88rem; margin: 8px 0; }

.dataTables_wrapper .dataTables_filter input,
.dataTables_wrapper .dataTables_length select {
  background: var(--bg-2);
  border: 1px solid var(--line-soft);
  border-radius: 8px;
  color: var(--text);
  padding: 6px 10px;
  margin: 0 6px;
}

.dataTables_wrapper .dataTables_paginate .paginate_button {
  color: var(--muted) !important;
  border: 1px solid transparent !important;
  border-radius: 8px !important;
  background: transparent !important;
}
.dataTables_wrapper .dataTables_paginate .paginate_button:hover {
  color: var(--gold-2) !important;
  border-color: var(--line) !important;
  background: transparent !important;
}
.dataTables_wrapper .dataTables_paginate .paginate_button.current {
  color: var(--bg) !important;
  background: var(--gold) !important;
  border-color: var(--gold) !important;
}
.dataTables_wrapper .dataTables_paginate .paginate_button.disabled { opacity: 0.4; }

td .row-btn {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.8rem;
  border: none;
  border-radius: 8px;
  padding: 6px 14px;
  cursor: pointer;
}
td .row-btn.edit { background: var(--cyan); color: var(--bg); }
td .row-btn.del  { background: var(--danger); color: #fff; }
td .row-btn:hover { filter: brightness(1.12); }

/* ============================ النوافذ العائمة ============================ */

.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(4, 10, 18, 0.78);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px;
  overflow-y: auto;
}

.modal {
  width: min(460px, 100%);
  max-height: calc(100vh - 40px);
  overflow-y: auto;
  background: linear-gradient(180deg, var(--panel), var(--bg-2));
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: var(--shadow);
  margin: auto;
}
.modal-lg { width: min(820px, 100%); }

.modal-header {
  position: sticky;
  top: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 22px;
  background: var(--panel-2);
  border-bottom: 1px solid var(--line);
}
.modal-header h3 { font-size: 1.05rem; color: var(--gold-2); }

.modal-close {
  background: none;
  border: none;
  color: var(--muted);
  font-size: 1.7rem;
  line-height: 1;
  cursor: pointer;
  padding: 0 4px;
}
.modal-close:hover { color: var(--danger); }

.modal-body { padding: 10px 22px 22px; }

.modal-footer {
  display: flex;
  gap: 10px;
  justify-content: flex-start;
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid var(--line-soft);
}

.section-title {
  color: var(--cyan-2);
  font-size: 0.92rem;
  margin: 20px 0 4px;
  padding-bottom: 6px;
  border-bottom: 1px dashed var(--line-soft);
}

/* شبكة النماذج */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 0 18px;
}
.form-grid .full { grid-column: 1 / -1; }
.form-field { min-width: 0; }

/* حقل مع زر صوت */
.voice-wrap { display: flex; gap: 8px; align-items: stretch; }
.voice-wrap .input { flex: 1; min-width: 0; }

.voice-btn {
  flex: none;
  width: 46px;
  border: 1.5px solid var(--line-soft);
  border-radius: 10px;
  background: var(--bg-2);
  color: var(--gold-2);
  font-size: 1.15rem;
  cursor: pointer;
  transition: all 0.15s ease;
}
.voice-btn:hover { border-color: var(--gold); }
.voice-btn.listening {
  border-color: var(--danger);
  color: var(--danger);
  animation: pulse 1s infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(224, 91, 91, 0.5); }
  50%      { box-shadow: 0 0 0 7px rgba(224, 91, 91, 0); }
}

/* Radio pills */
.radio-row { display: flex; flex-wrap: wrap; gap: 10px; }

.radio-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-2);
  border: 1.5px solid var(--line-soft);
  border-radius: 30px;
  padding: 8px 16px;
  cursor: pointer;
  font-size: 0.92rem;
  transition: all 0.15s ease;
  user-select: none;
}
.radio-pill input { accent-color: var(--gold); margin: 0; }
.radio-pill:has(input:checked) {
  border-color: var(--gold);
  color: var(--gold-2);
  background: rgba(212, 168, 67, 0.1);
}
.check-pill { border-radius: 10px; margin-top: 14px; }

/* حقل التاريخ */
.date-field {
  cursor: pointer;
  background: var(--bg-2) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23d4a843' viewBox='0 0 16 16'%3E%3Cpath d='M3.5 0a.5.5 0 0 1 .5.5V1h8V.5a.5.5 0 0 1 1 0V1h1a2 2 0 0 1 2 2v11a2 2 0 0 1-2 2H2a2 2 0 0 1-2-2V3a2 2 0 0 1 2-2h1V.5a.5.5 0 0 1 .5-.5zM1 4v10a1 1 0 0 0 1 1h12a1 1 0 0 0 1-1V4H1z'/%3E%3C/svg%3E") no-repeat left 12px center;
  padding-left: 38px;
}

/* شبكة أعمدة التصدير */
.columns-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 8px;
  margin-top: 10px;
}
.columns-grid label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  background: var(--bg-2);
  border: 1px solid var(--line-soft);
  border-radius: 8px;
  padding: 7px 10px;
  cursor: pointer;
}
.columns-grid label:has(input:checked) { border-color: var(--gold); color: var(--gold-2); }
.columns-grid input { accent-color: var(--gold); margin: 0; }

.cols-toolbar { display: flex; gap: 8px; margin-top: 8px; }

/* ============================ منتقي التاريخ الدوّار ============================ */

.roll-overlay { align-items: flex-end; padding: 0; }

.roll-sheet {
  position: relative;
  width: min(480px, 100%);
  margin: 0 auto;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 20px 20px 0 0;
  padding-bottom: max(14px, env(safe-area-inset-bottom));
  box-shadow: 0 -18px 50px rgba(0, 0, 0, 0.55);
}

.roll-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line-soft);
}
.roll-title { font-family: var(--font-display); font-weight: 700; color: var(--gold-2); }

.roll-columns {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr 1.3fr;
  gap: 6px;
  padding: 6px 18px 12px;
}

.roll-col-wrap { text-align: center; }
.roll-col-label { color: var(--muted); font-size: 0.78rem; padding: 8px 0 4px; }

.roll-col {
  height: 200px;
  overflow-y: scroll;
  scroll-snap-type: y mandatory;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
  mask-image: linear-gradient(transparent, #000 28%, #000 72%, transparent);
  -webkit-mask-image: linear-gradient(transparent, #000 28%, #000 72%, transparent);
}
.roll-col::-webkit-scrollbar { display: none; }

.roll-item {
  height: 40px;
  line-height: 40px;
  scroll-snap-align: center;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--muted);
  transition: color 0.12s ease, transform 0.12s ease;
}
.roll-item.selected { color: var(--gold-2); transform: scale(1.12); }
.roll-spacer { height: 80px; }

.roll-highlight {
  position: absolute;
  right: 18px;
  left: 18px;
  top: calc(50% + 8px);
  height: 40px;
  transform: translateY(-6px);
  border-top: 1.5px solid var(--gold);
  border-bottom: 1.5px solid var(--gold);
  background: rgba(212, 168, 67, 0.06);
  pointer-events: none;
  border-radius: 6px;
}

/* ============================ التنبيهات ============================ */

.toast-area {
  position: fixed;
  bottom: 20px;
  right: 50%;
  transform: translateX(50%);
  z-index: 500;
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: min(420px, calc(100vw - 30px));
}

.toast {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.92rem;
  border-radius: 12px;
  padding: 13px 18px;
  box-shadow: var(--shadow);
  animation: toastIn 0.25s ease;
  border: 1px solid;
}
.toast.ok    { background: #0d2a1d; border-color: var(--success); color: #b8ecd0; }
.toast.err   { background: #2c1214; border-color: var(--danger);  color: #ffc4c4; }
@keyframes toastIn {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ============================ منطقة PDF خارج الشاشة ============================ */

#pdfStage {
  position: absolute;
  top: 0;
  right: -20000px;
  z-index: -1;
}

/* ============================ استجابة الموبايل ============================ */

@media (max-width: 640px) {
  .records-actions { width: 100%; }
  .records-actions .btn { flex: 1; padding: 10px 8px; font-size: 0.85rem; }
  .modal { border-radius: 14px; }
  .modal-body { padding: 8px 16px 18px; }
  .dataTables_wrapper .dataTables_filter { text-align: right; }
  .dataTables_wrapper .dataTables_filter input { width: 60%; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}