/* ==========================================
   SISTEMA DE DISEÑO & VARIABLES CSS
   ========================================== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Plus+Jakarta+Sans:wght@500;600;700;800&display=swap');

:root {
  --bg-dark: #090d16;
  --bg-card: rgba(21, 28, 44, 0.75);
  --bg-card-hover: rgba(28, 37, 57, 0.85);
  --bg-input: rgba(13, 18, 30, 0.8);

  --border-color: rgba(255, 255, 255, 0.08);
  --border-focus: #6366f1;

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --primary-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  --primary-hover: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
  --accent-cyan: #06b6d4;

  --success-bg: rgba(16, 185, 129, 0.12);
  --success-border: rgba(16, 185, 129, 0.3);
  --success-text: #34d399;

  --warning-bg: rgba(245, 158, 11, 0.12);
  --warning-border: rgba(245, 158, 11, 0.3);
  --warning-text: #fbbf24;

  --error-bg: rgba(239, 68, 68, 0.12);
  --error-border: rgba(239, 68, 68, 0.3);
  --error-text: #f87171;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;

  --shadow-main: 0 20px 40px -15px rgba(0, 0, 0, 0.5), 0 0 30px rgba(99, 102, 241, 0.1);
  --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(99, 102, 241, 0.12) 0%, transparent 40%),
    radial-gradient(circle at 85% 85%, rgba(139, 92, 246, 0.1) 0%, transparent 40%);
  background-attachment: fixed;
  overflow-x: hidden;
}

/* Container general */
.app-viewport {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

/* ==========================================
   CONTENEDOR DE LOGIN
   ========================================== */
.login-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
}

.login-card {
  width: 100%;
  max-width: 440px;
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  box-shadow: var(--shadow-main);
  animation: fadeIn 0.4s ease-out;
}

.brand-header {
  text-align: center;
  margin-bottom: 32px;
}

.brand-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.25);
  color: #a5b4fc;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.brand-title {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 1.75rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 8px;
  letter-spacing: -0.5px;
}

.brand-subtitle {
  color: var(--text-secondary);
  font-size: 0.92rem;
}

/* Form Groups */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.input-control,
.select-control,
.textarea-control {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  color: var(--text-primary);
  font-size: 0.95rem;
  font-family: inherit;
  transition: var(--transition-fast);
  outline: none;
}

.select-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%252394a3b8'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-size: 18px;
  padding-right: 40px;
  cursor: pointer;
}

.select-control option {
  background: #111827;
  color: #f3f4f6;
}

.input-control:focus,
.select-control:focus,
.textarea-control:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
  background: rgba(18, 25, 40, 0.95);
}

/* Botones */
.btn-primary {
  width: 100%;
  background: var(--primary-gradient);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-md);
  padding: 14px 20px;
  font-size: 0.98rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  padding: 8px 16px;
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-fast);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
}

/* Feedback alert */
.alert-box {
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.alert-error {
  background: var(--error-bg);
  border: 1px solid var(--error-border);
  color: var(--error-text);
}

.alert-success {
  background: var(--success-bg);
  border: 1px solid var(--success-border);
  color: var(--success-text);
}

.hidden {
  display: none !important;
}

/* ==========================================
   HEADER Y NAVEGACIÓN DASHBOARD
   ========================================== */
.main-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 16px 24px;
  margin-bottom: 24px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--primary-gradient);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.2rem;
  color: #fff;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.header-titles h1 {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 1.25rem;
  font-weight: 700;
}

.header-titles p {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.header-user-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.user-badge {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  padding: 6px 14px;
  border-radius: 30px;
}

.user-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(99, 102, 241, 0.2);
  border: 1px solid rgba(99, 102, 241, 0.5);
  color: #a5b4fc;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
}

.user-info {
  display: flex;
  flex-direction: column;
}

.user-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
}

.user-lib {
  font-size: 0.75rem;
  color: var(--accent-cyan);
  font-weight: 500;
}

/* ==========================================
   MÓDULO CONTENEDOR & TARJETAS
   ========================================== */
.module-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
  margin-bottom: 24px;
  transition: var(--transition-fast);
}

.module-header {
  padding: 20px 28px;
  background: rgba(255, 255, 255, 0.02);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.module-title-area {
  display: flex;
  align-items: center;
  gap: 12px;
}

.module-icon {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  background: rgba(6, 182, 212, 0.15);
  border: 1px solid rgba(6, 182, 212, 0.3);
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
}

.module-title {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 1.15rem;
  font-weight: 700;
}

.module-body {
  padding: 28px;
}

/* Textarea de Carga Masiva */
.excel-notice {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background: rgba(99, 102, 241, 0.08);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  margin-bottom: 20px;
  font-size: 0.88rem;
  color: #cbd5e1;
}

.excel-notice svg {
  flex-shrink: 0;
  margin-top: 2px;
  color: #818cf8;
}

.textarea-control {
  min-height: 220px;
  font-family: 'Courier New', Courier, monospace;
  line-height: 1.5;
  resize: vertical;
}

.input-meta-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 8px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.actions-bar {
  margin-top: 24px;
  display: flex;
  justify-content: flex-end;
}

.actions-bar .btn-primary {
  width: auto;
  min-width: 240px;
}

/* ==========================================
   PANEL DE RESULTADOS
   ========================================== */
.results-panel {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
  animation: fadeIn 0.3s ease-in-out;
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.metric-card {
  background: rgba(13, 18, 30, 0.6);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: var(--transition-fast);
}

.metric-card:hover {
  transform: translateY(-2px);
}

.metric-card.creados {
  border-color: var(--success-border);
  background: var(--success-bg);
}

.metric-card.omitidos {
  border-color: var(--warning-border);
  background: var(--warning-bg);
}

.metric-card.total {
  border-color: rgba(99, 102, 241, 0.3);
  background: rgba(99, 102, 241, 0.1);
}

.metric-label {
  font-size: 0.82rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
}

.metric-value {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 2.2rem;
  font-weight: 800;
}

.creados .metric-value { color: var(--success-text); }
.omitidos .metric-value { color: var(--warning-text); }
.total .metric-value { color: #a5b4fc; }

/* Spinner animación */
.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: #ffffff;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Responsividad */
@media (max-width: 640px) {
  .main-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  .header-user-actions {
    width: 100%;
    justify-content: space-between;
  }
  .login-card {
    padding: 28px 20px;
  }
}