/* ═══════════════════════════════════════
   TECNOCELL S.A.C. — Sistema de Inventario
   Diseño profesional oscuro / industrial
═══════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Space+Mono:wght@400;700&family=DM+Sans:opsz,wght@9..40,300;9..40,400;9..40,500;9..40,600;9..40,700&display=swap');

:root {
  --bg:      #080d18;
  --bg2:     #0d1525;
  --bg3:     #111c2e;
  --card:    #0f1a2e;
  --border:  #1e2d45;
  --border2: #253552;
  --accent:  #00cfff;
  --accent2: #6c3fff;
  --accent3: #00e896;
  --danger:  #ff4757;
  --warn:    #ffb400;
  --text:    #dde8f4;
  --text2:   #8daabb;
  --text3:   #4d6480;
  --font:    'DM Sans', sans-serif;
  --mono:    'Space Mono', monospace;
  --radius:  12px;
  --shadow:  0 4px 24px rgba(0,0,0,0.4);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  font-size: 14px;
  line-height: 1.5;
  overflow-x: hidden;
}

.hidden { display: none !important; }

/* ─── SCROLLBAR ─── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg2); }
::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 3px; }

/* ═══════════════════════════════════════
   LOGIN
═══════════════════════════════════════ */
#login-screen {
  position: fixed; inset: 0;
  background: var(--bg);
  background-image:
    radial-gradient(ellipse 60% 50% at 15% 60%, rgba(0,207,255,0.07) 0%, transparent 70%),
    radial-gradient(ellipse 50% 40% at 85% 30%, rgba(108,63,255,0.07) 0%, transparent 70%),
    radial-gradient(ellipse 80% 60% at 50% 100%, rgba(0,232,150,0.04) 0%, transparent 70%);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

.login-box {
  width: 420px;
  background: var(--card);
  border: 1px solid var(--border2);
  border-radius: 20px;
  padding: 48px 40px;
  text-align: center;
  box-shadow: 0 0 80px rgba(0,207,255,0.08), var(--shadow);
  animation: fadeUp 0.5s ease;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

.login-logo {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 4px;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.login-title {
  font-size: 30px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}

.login-sub {
  color: var(--text2);
  font-size: 14px;
  margin-bottom: 32px;
}

.login-box input {
  width: 100%;
  padding: 14px 16px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  margin-bottom: 12px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.login-box input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0,207,255,0.1);
}

.login-error {
  color: var(--danger);
  font-size: 13px;
  margin-bottom: 10px;
  display: none;
}

.login-btn {
  width: 100%;
  padding: 15px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
  border: none;
  border-radius: 10px;
  color: #fff;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  letter-spacing: 2px;
  transition: opacity 0.2s, transform 0.1s;
  margin-top: 4px;
}

.login-btn:hover { opacity: 0.88; }
.login-btn:active { transform: scale(0.98); }

.login-hint {
  margin-top: 20px;
  font-size: 12px;
  color: var(--text3);
}

.login-hint span {
  color: var(--accent);
  font-family: var(--mono);
}

/* ═══════════════════════════════════════
   SIDEBAR
═══════════════════════════════════════ */
.sidebar {
  position: fixed;
  top: 0; left: 0;
  width: 240px;
  height: 100vh;
  background: var(--card);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: 100;
  overflow-y: auto;
}

.sidebar-logo {
  padding: 22px 20px 18px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 10px;
}

.brand {
  font-family: var(--mono);
  font-size: 14px;
  color: var(--accent);
  letter-spacing: 2px;
  font-weight: 700;
}

.brand-sub {
  font-size: 11px;
  color: var(--text3);
  margin-top: 3px;
}

nav { padding: 0 6px; flex: 1; }

.nav-section {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 2px;
  color: var(--text3);
  text-transform: uppercase;
  padding: 14px 14px 6px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 11px 14px;
  margin: 1px 0;
  border-radius: 9px;
  cursor: pointer;
  color: var(--text2);
  font-size: 13.5px;
  font-weight: 500;
  transition: all 0.15s;
  user-select: none;
  position: relative;
}

.nav-item:hover {
  background: var(--bg3);
  color: var(--text);
}

.nav-item.active {
  background: rgba(0,207,255,0.1);
  color: var(--accent);
}

.nav-item.active::before {
  content: '';
  position: absolute;
  left: 0; top: 20%; bottom: 20%;
  width: 3px;
  background: var(--accent);
  border-radius: 0 3px 3px 0;
}

.nav-icon { font-size: 16px; width: 20px; text-align: center; flex-shrink: 0; }

.badge {
  margin-left: auto;
  background: var(--danger);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  border-radius: 20px;
  padding: 1px 7px;
  font-family: var(--mono);
  min-width: 20px;
  text-align: center;
}

.sidebar-footer {
  padding: 14px 16px;
  border-top: 1px solid var(--border);
  margin-top: auto;
}

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

.user-avatar {
  width: 36px; height: 36px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 15px; color: #fff;
  flex-shrink: 0;
}

.user-name { font-size: 13px; font-weight: 600; }
.user-role { font-size: 11px; color: var(--text3); }

.logout-btn {
  margin-left: auto;
  background: none;
  border: none;
  color: var(--text3);
  cursor: pointer;
  font-size: 18px;
  transition: color 0.2s;
  padding: 4px;
}
.logout-btn:hover { color: var(--danger); }

/* ═══════════════════════════════════════
   MAIN + TOPBAR
═══════════════════════════════════════ */
.main { margin-left: 240px; min-height: 100vh; }

.topbar {
  position: sticky;
  top: 0; z-index: 50;
  background: rgba(8,13,24,0.93);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  padding: 14px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.page-title { font-size: 19px; font-weight: 700; }
.page-sub { font-size: 12px; color: var(--text2); margin-top: 1px; }

.topbar-right { display: flex; align-items: center; gap: 10px; }

.chip {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text2);
  background: var(--bg3);
  border: 1px solid var(--border);
  padding: 5px 12px;
  border-radius: 20px;
}

.icon-btn {
  width: 36px; height: 36px;
  border-radius: 9px;
  background: var(--bg3);
  border: 1px solid var(--border);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px;
  transition: all 0.2s;
}
.icon-btn:hover { border-color: var(--accent); }

.notif-dot { position: relative; }
.notif-dot::after {
  content: '';
  position: absolute;
  top: 6px; right: 6px;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--danger);
  border: 2px solid var(--bg);
}

.content { padding: 24px 28px; }

/* ═══════════════════════════════════════
   STAT CARDS
═══════════════════════════════════════ */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-bottom: 20px;
}

.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  position: relative;
  overflow: hidden;
  transition: border-color 0.2s, transform 0.2s;
}
.stat-card:hover { border-color: var(--border2); transform: translateY(-1px); }

.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
}
.stat-card.c1::before { background: var(--accent); }
.stat-card.c2::before { background: var(--accent2); }
.stat-card.c3::before { background: var(--accent3); }
.stat-card.c4::before { background: var(--warn); }

.stat-icon {
  position: absolute;
  top: 14px; right: 16px;
  font-size: 26px;
  opacity: 0.12;
}

.stat-label {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text3);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 6px;
}

.stat-val {
  font-family: var(--mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  margin-bottom: 4px;
}
.stat-card.c1 .stat-val { color: var(--accent); }
.stat-card.c2 .stat-val { color: var(--accent2); }
.stat-card.c3 .stat-val { color: var(--accent3); }
.stat-card.c4 .stat-val { color: var(--warn); }

.stat-sub { font-size: 12px; color: var(--text3); }

/* ═══════════════════════════════════════
   SECTION CARDS & TABLES
═══════════════════════════════════════ */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 14px;
}

.section-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.section-header {
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
  background: var(--bg2);
}

.section-title { font-size: 14px; font-weight: 600; }

.tbl {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.tbl thead tr {
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
}

.tbl thead th {
  padding: 11px 14px;
  text-align: left;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 700;
  color: var(--text3);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.tbl tbody tr {
  border-bottom: 1px solid var(--border);
  transition: background 0.12s;
}
.tbl tbody tr:last-child { border-bottom: none; }
.tbl tbody tr:hover { background: rgba(255,255,255,0.02); }

.tbl tbody td {
  padding: 11px 14px;
  color: var(--text);
  vertical-align: middle;
}

/* ═══════════════════════════════════════
   TOOLBAR & CONTROLS
═══════════════════════════════════════ */
.toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}

.search-input {
  flex: 1;
  min-width: 200px;
  max-width: 340px;
  padding: 10px 14px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 9px;
  color: var(--text);
  font-family: var(--font);
  font-size: 13px;
  outline: none;
  transition: border-color 0.2s;
}
.search-input:focus { border-color: var(--accent); }

.sel {
  padding: 10px 14px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 9px;
  color: var(--text);
  font-family: var(--font);
  font-size: 13px;
  outline: none;
  cursor: pointer;
  transition: border-color 0.2s;
}
.sel:focus { border-color: var(--accent); }

/* ═══════════════════════════════════════
   BUTTONS
═══════════════════════════════════════ */
.btn {
  padding: 9px 18px;
  border-radius: 9px;
  border: none;
  font-family: var(--font);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #0096cc);
  color: #001820;
}
.btn-primary:hover { opacity: 0.88; }

.btn-success {
  background: linear-gradient(135deg, var(--accent3), #00a870);
  color: #001810;
}
.btn-success:hover { opacity: 0.88; }

.btn-danger {
  background: rgba(255,71,87,0.15);
  color: var(--danger);
  border: 1px solid rgba(255,71,87,0.3);
}
.btn-danger:hover { background: rgba(255,71,87,0.25); }

.btn-ghost {
  background: var(--bg3);
  color: var(--text2);
  border: 1px solid var(--border);
}
.btn-ghost:hover { border-color: var(--border2); color: var(--text); }

.btn-sm { padding: 6px 12px; font-size: 12px; }

.btn-warn {
  background: rgba(255,180,0,0.15);
  color: var(--warn);
  border: 1px solid rgba(255,180,0,0.3);
}
.btn-warn:hover { background: rgba(255,180,0,0.25); }

/* ═══════════════════════════════════════
   BADGES / PILLS
═══════════════════════════════════════ */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  font-family: var(--mono);
  white-space: nowrap;
}
.pill-success { background: rgba(0,232,150,0.12); color: var(--accent3); }
.pill-danger  { background: rgba(255,71,87,0.12);  color: var(--danger); }
.pill-warn    { background: rgba(255,180,0,0.12);  color: var(--warn); }
.pill-info    { background: rgba(0,207,255,0.12);  color: var(--accent); }
.pill-gray    { background: rgba(255,255,255,0.06); color: var(--text3); }
.pill-purple  { background: rgba(108,63,255,0.12); color: var(--accent2); }

/* ═══════════════════════════════════════
   MODALES
═══════════════════════════════════════ */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
  animation: fadeIn 0.2s ease;
}

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

.modal {
  background: var(--card);
  border: 1px solid var(--border2);
  border-radius: 16px;
  width: 100%;
  max-width: 640px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow);
  animation: slideUp 0.25s ease;
}

@keyframes slideUp {
  from { transform: translateY(12px); opacity: 0; }
  to   { transform: translateY(0);    opacity: 1; }
}

.modal-header {
  padding: 20px 24px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
  font-size: 16px;
  font-weight: 700;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text3);
  cursor: pointer;
  font-size: 20px;
  transition: color 0.2s;
  line-height: 1;
}
.modal-close:hover { color: var(--danger); }

.modal-body { padding: 20px 24px; }

.modal-footer {
  padding: 16px 24px 20px;
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  border-top: 1px solid var(--border);
}

/* ─── FORMS ─── */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group.full { grid-column: 1 / -1; }

.form-group label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text2);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-family: var(--mono);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 11px 13px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 9px;
  color: var(--text);
  font-family: var(--font);
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  resize: vertical;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0,207,255,0.08);
}

.form-group input[readonly] {
  background: var(--bg2);
  color: var(--text3);
  cursor: not-allowed;
}

/* ═══════════════════════════════════════
   TOAST
═══════════════════════════════════════ */
.toast {
  position: fixed;
  bottom: 28px; right: 28px;
  background: var(--card);
  border: 1px solid var(--border2);
  border-radius: 12px;
  padding: 14px 20px;
  font-size: 14px;
  font-weight: 500;
  box-shadow: var(--shadow);
  z-index: 9999;
  max-width: 340px;
  animation: slideToast 0.3s ease;
  border-left: 4px solid var(--accent3);
}

@keyframes slideToast {
  from { transform: translateX(120%); opacity: 0; }
  to   { transform: translateX(0);    opacity: 1; }
}

.toast.error { border-left-color: var(--danger); }
.toast.warn  { border-left-color: var(--warn); }

/* ═══════════════════════════════════════
   UTILITY
═══════════════════════════════════════ */
.text-muted { color: var(--text3); }
.text-accent { color: var(--accent); }
.text-danger { color: var(--danger); }
.text-success { color: var(--accent3); }
.text-warn { color: var(--warn); }
.font-mono { font-family: var(--mono); }
.fw-bold { font-weight: 700; }

.empty-state {
  text-align: center;
  padding: 48px 20px;
  color: var(--text3);
  font-size: 13px;
}
.empty-state .icon { font-size: 36px; margin-bottom: 10px; opacity: 0.4; }

/* Responsive tweaks */
@media (max-width: 1100px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .two-col    { grid-template-columns: 1fr; }
}