/* ============================================================
   USHUAIA VOLLEYBALL CLUB — STYLES v2.0
   Premium Admin Dashboard
   ============================================================ */

/* ===== RESET & BASE ===== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  background: var(--color-bg);
  color: var(--color-text);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.hidden { display: none !important; }

::selection {
  background: var(--color-accent-muted);
  color: var(--color-text);
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* ===== LOGIN SCREEN ===== */
.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-brand);
  padding: var(--space-6);
  position: relative;
  overflow: hidden;
}

.login-screen::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: 
    radial-gradient(ellipse at 30% 20%, rgba(74, 122, 181, 0.2) 0%, transparent 50%),
    radial-gradient(ellipse at 70% 80%, rgba(107, 159, 212, 0.1) 0%, transparent 50%);
  animation: bgShift 20s ease-in-out infinite alternate;
}

.login-screen::after {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%234a7ab5' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.5;
}

@keyframes bgShift {
  0% { transform: translate(0, 0) rotate(0deg); }
  100% { transform: translate(-3%, -3%) rotate(2deg); }
}

.login-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  max-width: 960px;
  width: 100%;
  background: var(--color-surface);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: 0 25px 60px -12px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(255,255,255,0.05);
  position: relative;
  z-index: 1;
  animation: loginAppear 0.8s var(--ease-out) both;
}

@keyframes loginAppear {
  from { opacity: 0; transform: translateY(20px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.login-decoration {
  background: var(--gradient-brand);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-16) var(--space-10);
  color: white;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.login-decoration::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 30%, rgba(74, 122, 181, 0.25) 0%, transparent 60%);
}

.login-decoration > * { position: relative; z-index: 1; }

.login-logo {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  object-fit: contain;
  margin-bottom: var(--space-6);
  filter: drop-shadow(0 8px 24px rgba(0, 0, 0, 0.3));
  animation: logoFloat 4s ease-in-out infinite;
  border: 3px solid rgba(255,255,255,0.15);
}

@keyframes logoFloat {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-8px) scale(1.02); }
}

.login-brand {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-extrabold);
  background: linear-gradient(135deg, #e8eef5, #ffffff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: var(--letter-spacing-tight);
  margin-bottom: var(--space-2);
}

.login-subtitle {
  color: var(--brand-silver);
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-medium);
  letter-spacing: var(--letter-spacing-wide);
}

.login-form-container {
  padding: var(--space-12) var(--space-10);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.login-form-container h2 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-8);
  color: var(--color-text);
  letter-spacing: var(--letter-spacing-tight);
}

/* ===== FORM SYSTEM ===== */
.form-group {
  margin-bottom: var(--space-5);
  position: relative;
}

.form-group label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2);
  transition: color var(--duration-fast);
}

.form-group label i {
  margin-right: var(--space-2);
  color: var(--color-accent);
  font-size: 0.85em;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  font-family: inherit;
  color: var(--color-text);
  background: var(--color-surface);
  transition: var(--transition-base);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-muted);
}

.form-group input:hover,
.form-group select:hover,
.form-group textarea:hover {
  border-color: var(--color-text-muted);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  background: var(--color-surface);
  box-shadow: 0 0 0 3px var(--color-accent-subtle), var(--shadow-sm);
}

.login-register {
  margin-top: var(--space-6);
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.login-register a, #show-login {
  color: var(--color-accent);
  text-decoration: none;
  font-weight: var(--font-weight-semibold);
  transition: var(--transition-fast);
}

.login-register a:hover, #show-login:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  border: none;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  font-family: inherit;
  cursor: pointer;
  transition: var(--transition-base);
  white-space: nowrap;
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn:active { transform: scale(0.97); }

.btn-primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn-success {
  background: var(--color-success);
  color: white;
  box-shadow: var(--shadow-sm);
}

.btn-success:hover {
  background: #059669;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.btn-danger {
  background: var(--color-danger);
  color: white;
}

.btn-danger:hover {
  background: #dc2626;
  transform: translateY(-1px);
}

.btn-warning {
  background: #f97316;
  color: white;
}

.btn-warning:hover {
  background: #ea580c;
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--color-border);
  color: var(--color-text-secondary);
}

.btn-outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: var(--color-accent-subtle);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
  padding: var(--space-2) var(--space-3);
}

.btn-ghost:hover {
  background: var(--color-accent-subtle);
  color: var(--color-accent);
}

.btn-full {
  width: 100%;
  padding: var(--space-4);
  font-size: var(--font-size-base);
}

.btn-lg {
  padding: var(--space-4) var(--space-6);
  font-size: var(--font-size-base);
  border-radius: var(--radius-lg);
}

.btn-sm {
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-size-xs);
  border-radius: var(--radius-sm);
}

/* ===== APP LAYOUT ===== */
.app {
  display: block;
  min-height: 100vh;
}

/* ===== SIDEBAR ===== */
.sidebar {
  background: var(--sidebar-bg);
  display: flex;
  flex-direction: column;
  position: fixed;
  width: var(--sidebar-width);
  height: 100vh;
  z-index: var(--z-sidebar);
  transition: width var(--duration-slow) var(--ease-out);
  border-right: 1px solid var(--sidebar-border);
}

.sidebar-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: 99;
}

.sidebar-header {
  padding: var(--space-5);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  border-bottom: 1px solid var(--sidebar-border);
  min-height: var(--topbar-height);
}

.sidebar-header img {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  object-fit: contain;
  flex-shrink: 0;
  border: 1.5px solid rgba(255,255,255,0.1);
}

.sidebar-header h2 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  background: linear-gradient(135deg, #e8eef5, #ffffff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  white-space: nowrap;
}

.sidebar-nav {
  flex: 1;
  padding: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  overflow-y: auto;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  color: var(--sidebar-text);
  text-decoration: none;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  transition: var(--transition-base);
  position: relative;
}

.nav-item i {
  width: 20px;
  text-align: center;
  font-size: 1rem;
  flex-shrink: 0;
  transition: var(--transition-fast);
}

.nav-item:hover {
  background: var(--sidebar-active-bg);
  color: var(--sidebar-text-hover);
}

.nav-item:hover i { color: var(--sidebar-active-indicator); }

.nav-item.active {
  background: var(--sidebar-active-bg);
  color: var(--sidebar-active-text);
}

.nav-item.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 24px;
  background: var(--sidebar-active-indicator);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.nav-item.active i { color: var(--sidebar-active-indicator); }

/* Collapsible nav group */
.nav-group { display: flex; flex-direction: column; gap: var(--space-1); }
.nav-group-toggle { cursor: pointer; }
.nav-group-chevron {
  margin-left: auto;
  font-size: 0.75rem !important;
  transition: transform var(--transition-fast);
}
.nav-group.collapsed .nav-group-chevron { transform: rotate(-90deg); }
.nav-group-items {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  overflow: hidden;
  max-height: 500px;
  transition: max-height var(--transition-base);
}
.nav-group.collapsed .nav-group-items { max-height: 0; }
.nav-subitem { padding-left: var(--space-8); font-size: var(--font-size-sm); }
.nav-subitem i { font-size: 0.85rem; }

.sidebar-footer {
  padding: var(--space-4);
  border-top: 1px solid var(--sidebar-border);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.user-info {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--font-size-sm);
  color: var(--brand-silver);
}

.user-info i {
  font-size: 1.4rem;
  color: var(--brand-silver);
}

/* ===== MAIN CONTENT ===== */
.main-content {
  margin-left: var(--sidebar-width);
  width: calc(100% - var(--sidebar-width));
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* ===== TOP BAR ===== */
.top-bar {
  padding: var(--space-4) var(--space-8);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: var(--z-topbar);
  min-height: var(--topbar-height);
  backdrop-filter: blur(12px);
  background: var(--color-surface-overlay);
  flex-wrap: wrap;
}

.top-bar h1 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  flex: 1;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  letter-spacing: var(--letter-spacing-tight);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.2rem;
  cursor: pointer;
  color: var(--color-text);
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  align-items: center;
  justify-content: center;
  transition: var(--transition-fast);
}

.menu-toggle:hover {
  background: var(--color-accent-subtle);
  color: var(--color-accent);
}

.top-bar-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.top-bar-search {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  min-width: 160px;
  max-width: 260px;
  flex: 1 1 160px;
  transition: var(--transition-base);
}

.top-bar-search:focus-within {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-subtle);
  background: var(--color-surface);
}

.top-bar-search i {
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.top-bar-search input {
  border: none;
  background: transparent;
  font-size: var(--font-size-sm);
  font-family: inherit;
  color: var(--color-text);
  width: 100%;
  outline: none;
}

.top-bar-search input::placeholder { color: var(--color-text-muted); }

.theme-toggle {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-base);
  color: var(--color-text-secondary);
  font-size: 1rem;
}

.theme-toggle:hover {
  background: var(--color-accent-subtle);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.current-date {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  white-space: nowrap;
  flex-shrink: 0;
}

/* ===== CONTENT AREA ===== */
.content-area {
  padding: var(--space-8);
  flex: 1;
  max-width: var(--content-max-width);
  width: 100%;
  margin: 0 auto;
}

/* ===== SECTIONS & PAGE TRANSITIONS ===== */
.section { display: none; }
.section.active {
  display: block;
  animation: sectionEnter var(--duration-slow) var(--ease-out) both;
}

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

/* ===== STATS GRID ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-5);
  margin-bottom: var(--space-8);
}

.stat-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-subtle);
  transition: var(--transition-base);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
  border-color: transparent;
}

.stat-purple::before { background: var(--gradient-brand); }
.stat-blue::before { background: var(--gradient-accent); }
.stat-green::before { background: linear-gradient(135deg, #10b981, #34d399); }
.stat-orange::before { background: linear-gradient(135deg, #f59e0b, #fbbf24); }

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.stat-purple .stat-icon { background: var(--color-accent-subtle); color: var(--brand-navy); }
.stat-blue .stat-icon { background: var(--color-accent-subtle); color: var(--brand-blue); }
.stat-green .stat-icon { background: var(--color-success-subtle); color: var(--color-success); }
.stat-orange .stat-icon { background: var(--color-warning-subtle); color: var(--color-warning); }

.stat-info h3 {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-extrabold);
  line-height: var(--line-height-tight);
  letter-spacing: var(--letter-spacing-tight);
  color: var(--color-text);
}

.stat-info p {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  margin-top: var(--space-1);
}

/* ===== CARDS ===== */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-subtle);
  transition: var(--transition-base);
}

.card:hover { box-shadow: var(--shadow-md); }

.card h3 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text);
}

.card h3 i { color: var(--color-accent); font-size: 1rem; }

.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
}

/* ===== SECTION HEADERS ===== */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
  gap: var(--space-4);
}

.section-header h2 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--letter-spacing-tight);
  color: var(--color-text);
}

.section-actions {
  display: flex;
  gap: var(--space-3);
  align-items: center;
}

.select-filter {
  padding: var(--space-2) var(--space-4);
  padding-right: var(--space-8);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-family: inherit;
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
  transition: var(--transition-base);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%234a5e7a' viewBox='0 0 16 16'%3E%3Cpath d='M4.646 6.646a.5.5 0 0 1 .708 0L8 9.293l2.646-2.647a.5.5 0 0 1 .708.708l-3 3a.5.5 0 0 1-.708 0l-3-3a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
}

.select-filter:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-subtle);
}

/* ===== CATEGORIES GRID ===== */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-5);
}

.category-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-subtle);
  transition: var(--transition-base);
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gradient-accent);
}

.category-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
  border-color: transparent;
}

.category-card h4 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-2);
  color: var(--color-text);
}

.category-card .category-meta {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-4);
}

.category-card .category-actions {
  display: flex;
  gap: var(--space-2);
}

.category-badge {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: white;
  margin-bottom: var(--space-2);
}

/* ===== COACHES GRID ===== */
.coaches-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-5);
}

.coach-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-subtle);
  text-align: center;
  transition: var(--transition-base);
}

.coach-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
}

.coach-avatar {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-xl);
  background: var(--gradient-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-4);
  font-size: 1.4rem;
  color: white;
  box-shadow: var(--shadow-accent);
}

.coach-card h4 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-1);
}

.coach-card .coach-specialty {
  color: var(--color-accent);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-2);
}

.coach-card .coach-contact {
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
}

.coach-card .coach-actions {
  margin-top: var(--space-4);
  display: flex;
  gap: var(--space-2);
  justify-content: center;
}

/* ===== DATA TABLE ===== */
.table-container {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-subtle);
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
}

/* ===== Tablas ordenables (toda la plataforma) ===== */
th.sortable-th {
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  white-space: nowrap;
}
th.sortable-th:hover {
  color: var(--color-primary, #6366f1);
}
th.sortable-th .sort-indicator {
  font-size: 0.78em;
  margin-left: 5px;
  opacity: 0.35;
  transition: opacity 0.15s ease;
}
th.sortable-th:hover .sort-indicator {
  opacity: 0.7;
}
th.sortable-th.sorted-asc .sort-indicator,
th.sortable-th.sorted-desc .sort-indicator {
  opacity: 1;
  color: var(--color-primary, #6366f1);
}

.data-table th {
  background: var(--color-bg-subtle);
  padding: var(--space-3) var(--space-4);
  text-align: left;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wider);
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border);
}

.data-table td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border-subtle);
  font-size: var(--font-size-sm);
  color: var(--color-text);
}

.data-table tr { transition: var(--transition-fast); }
.data-table tr:hover { background: var(--color-accent-subtle); }
.data-table tr:last-child td { border-bottom: none; }

.data-table .player-name {
  font-weight: var(--font-weight-semibold);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.jersey-badge {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  background: var(--gradient-brand);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  flex-shrink: 0;
}

/* ===== TRAINING LIST ===== */
.training-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.training-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-5) var(--space-6);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-subtle);
  display: flex;
  align-items: center;
  gap: var(--space-5);
  transition: var(--transition-base);
  position: relative;
  overflow: hidden;
}

.training-card::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--gradient-accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.training-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateX(2px);
  border-color: transparent;
}

.training-actions {
  display: flex;
  gap: var(--space-2);
  margin-left: var(--space-3);
}

.training-date-badge {
  text-align: center;
  min-width: 56px;
}

.training-date-badge .day {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-extrabold);
  color: var(--color-accent);
  line-height: 1;
}

.training-date-badge .month {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-wide);
  margin-top: var(--space-1);
}

.training-info { flex: 1; }

.training-info h4 {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-1);
  color: var(--color-text);
}

.training-info .training-meta {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.training-info .training-meta span {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.training-status {
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
}

.status-scheduled { background: var(--color-warning-subtle); color: #92400e; }
.status-completed { background: var(--color-success-subtle); color: #065f46; }
.status-cancelled { background: var(--color-danger-subtle); color: #991b1b; }

/* ===== ATTENDANCE ===== */
.attendance-container { max-width: 100%; overflow: hidden; }

.attendance-calendar-wrapper {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-subtle);
  margin-bottom: var(--space-5);
}

.cal-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
  flex-wrap: wrap;
}

.cal-header h3 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  min-width: 140px;
  text-align: center;
  color: var(--color-text);
}

.cal-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 2px;
  min-width: 0;
}

.cal-day-name {
  text-align: center;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wider);
  color: var(--color-text-muted);
  padding: var(--space-2);
}

.cal-days-container { display: contents; }

.cal-cell {
  aspect-ratio: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-base);
  position: relative;
  min-height: 36px;
  min-width: 0;
}

.cal-cell:hover { background: var(--color-accent-subtle); }
.cal-empty { cursor: default; }
.cal-empty:hover { background: transparent; }

.cal-day-num {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

.cal-today {
  background: var(--color-accent-subtle);
  border: 2px solid var(--color-accent);
}

.cal-today .cal-day-num {
  font-weight: var(--font-weight-bold);
  color: var(--color-accent);
}

.cal-selected { background: var(--color-accent) !important; color: white; }
.cal-selected .cal-day-num { color: white !important; font-weight: var(--font-weight-bold); }

.cal-has-sessions { font-weight: var(--font-weight-semibold); }

.cal-dots { display: flex; gap: 3px; margin-top: 2px; }
.cal-dot { width: 5px; height: 5px; border-radius: 50%; }
.cal-dot-scheduled { background: var(--color-accent); }
.cal-dot-completed { background: var(--color-success); }
.cal-selected .cal-dot-scheduled,
.cal-selected .cal-dot-completed { background: white; }

.cal-sessions-panel {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-5) var(--space-6);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-subtle);
  margin-bottom: var(--space-5);
}

.cal-sessions-panel h3 {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text);
}

.cal-sessions-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.cal-session-card {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  cursor: pointer;
  transition: var(--transition-base);
  border: 1.5px solid transparent;
  min-width: 0;
  overflow: hidden;
}

.cal-session-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-sm);
  background: var(--color-accent-subtle);
}

.cal-session-active {
  border-color: var(--color-accent);
  background: var(--color-accent-subtle);
}

.cal-session-completed { opacity: 0.65; }

.cal-session-color {
  width: 3px;
  height: 32px;
  border-radius: var(--radius-full);
  flex-shrink: 0;
}

.cal-session-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.cal-session-info strong {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.cal-session-info span {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: var(--space-1);
  white-space: nowrap;
}

.attendance-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.attendance-item {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  box-shadow: var(--shadow-xs);
  border: 1px solid var(--color-border-subtle);
  transition: var(--transition-base);
}

.attendance-item:hover {
  box-shadow: var(--shadow-sm);
  border-color: var(--color-border);
}

.attendance-player-info { flex: 1; }
.attendance-player-info h4 { font-size: var(--font-size-sm); font-weight: var(--font-weight-semibold); margin-bottom: 1px; }
.attendance-player-info span { color: var(--color-text-muted); font-size: var(--font-size-xs); }

.attendance-buttons { display: flex; gap: var(--space-2); }

.attendance-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--color-border);
  background: var(--color-surface);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  transition: var(--transition-base);
}

.attendance-btn:hover { transform: scale(1.1); }

.attendance-btn.present { border-color: var(--color-success); color: var(--color-success); }
.attendance-btn.present.active { background: var(--color-success); color: white; box-shadow: 0 2px 8px rgba(16,185,129,0.3); }
.attendance-btn.absent { border-color: var(--color-danger); color: var(--color-danger); }
.attendance-btn.absent.active { background: var(--color-danger); color: white; box-shadow: 0 2px 8px rgba(239,68,68,0.3); }
.attendance-btn.late { border-color: var(--color-warning); color: var(--color-warning); }
.attendance-btn.late.active { background: var(--color-warning); color: white; box-shadow: 0 2px 8px rgba(245,158,11,0.3); }

.attendance-actions { margin-top: var(--space-6); text-align: center; }

/* ===== WHATSAPP ===== */
.whatsapp-container .card { max-width: 600px; }
.whatsapp-container .card h3 { color: #25D366; }
.whatsapp-container .card p { color: var(--color-text-secondary); margin-bottom: var(--space-5); }

.reminders-result { margin-top: var(--space-5); }

.reminder-item {
  background: var(--color-success-subtle);
  border: 1px solid rgba(16,185,129,0.2);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  margin-bottom: var(--space-2);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.reminder-item .player-name { font-weight: var(--font-weight-semibold); font-size: var(--font-size-sm); }

.reminder-item .btn-whatsapp {
  background: #25D366;
  color: white;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-weight: var(--font-weight-semibold);
  transition: var(--transition-fast);
}

.reminder-item .btn-whatsapp:hover { background: #1da851; transform: translateY(-1px); }

/* ===== MODAL ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  padding: var(--space-5);
  animation: modalOverlayIn var(--duration-normal) var(--ease-out);
}

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

.modal {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 560px;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: var(--shadow-2xl);
  border: 1px solid var(--color-border-subtle);
  animation: modalSlideIn var(--duration-slow) var(--ease-out);
}

@keyframes modalSlideIn {
  from { opacity: 0; transform: translateY(20px) scale(0.96); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.modal-header {
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  background: var(--color-surface);
  z-index: 1;
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.modal-header h3 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
}

.modal-close {
  width: 32px;
  height: 32px;
  border: none;
  background: var(--color-bg);
  border-radius: var(--radius-md);
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-fast);
  color: var(--color-text-muted);
}

.modal-close:hover { background: var(--color-danger-subtle); color: var(--color-danger); }

.modal-body { padding: var(--space-6); }
.modal-body .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); }
.modal-body .btn-full { margin-top: var(--space-5); }

/* ===== TOAST ===== */
.toast-container {
  position: fixed;
  top: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.toast {
  background: var(--color-surface);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  animation: toastSlideIn var(--duration-slow) var(--ease-out);
  border: 1px solid var(--color-border-subtle);
  max-width: 360px;
}

.toast.error { border-left: 3px solid var(--color-danger); }
.toast.error i { color: var(--color-danger); }
.toast.success { border-left: 3px solid var(--color-success); }
.toast.success i { color: var(--color-success); }

@keyframes toastSlideIn {
  from { transform: translateX(100%) translateY(-10px); opacity: 0; }
  to { transform: translateX(0) translateY(0); opacity: 1; }
}

/* ===== EMPTY STATE ===== */
.empty-state {
  text-align: center;
  color: var(--color-text-muted);
  padding: var(--space-12) var(--space-6);
  font-size: var(--font-size-sm);
}

/* ===== STATUS BADGES ===== */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
}

.status-activo { background: var(--color-success-subtle); color: #065f46; }
.status-moroso { background: var(--color-warning-subtle); color: #92400e; }
.status-inactivo { background: var(--color-danger-subtle); color: #991b1b; }
.status-pendiente { background: #fef3cd; color: #856404; }
.status-rechazado { background: #f8d7da; color: #721c24; }
.status-retirado { background: #e2e3e5; color: #383d41; }
.status-becado { background: #d4edda; color: #155724; border: 1px solid #b8daff; }

/* Finance Tabs */
.finance-tab { background: var(--color-bg); color: var(--color-text-muted); cursor: pointer; transition: all 0.2s; }
.finance-tab.active { background: var(--color-card-bg); color: var(--color-text); border-bottom-color: var(--color-card-bg) !important; position: relative; z-index: 1; margin-bottom: -2px; }
.finance-tab:hover:not(.active) { background: var(--color-card-bg); opacity: 0.8; }

/* ===== ROLE BADGES ===== */
.role-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
}

.role-admin { background: var(--color-accent-subtle); color: var(--brand-navy); }
.role-coach { background: var(--color-accent-subtle); color: var(--brand-blue); }
.role-player { background: var(--color-success-subtle); color: #065f46; }

/* ===== CATALOGS ===== */
.catalogs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--space-5);
}

.catalog-card { position: relative; overflow: hidden; }
.catalog-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gradient-accent);
}

.catalog-desc { color: var(--color-text-muted); font-size: var(--font-size-sm); margin-bottom: var(--space-4); }

.catalog-items { display: flex; flex-wrap: wrap; gap: var(--space-2); }

.catalog-tag {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  background: var(--color-bg);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  transition: var(--transition-fast);
}

.catalog-tag:hover {
  background: var(--color-accent-subtle);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.catalog-summary-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--color-border-subtle);
}

.catalog-summary-item:last-child { border-bottom: none; }
.catalog-meta { font-size: var(--font-size-xs); color: var(--color-text-muted); }

.integrity-list { display: flex; flex-direction: column; gap: var(--space-2); }

.integrity-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
}

.integrity-ok { background: var(--color-success-subtle); color: #065f46; }
.integrity-ok i { color: var(--color-success); }
.integrity-warn { background: var(--color-warning-subtle); color: #92400e; }
.integrity-warn i { color: var(--color-warning); }

/* ===== RECURRING TRAINING ===== */
.recurring-days-container { display: flex; flex-direction: column; gap: var(--space-2); }

.recurring-day-row {
  display: grid;
  grid-template-columns: 1fr auto auto auto;
  gap: var(--space-2);
  align-items: center;
}

.recurring-day-row select,
.recurring-day-row input {
  padding: var(--space-2) var(--space-3);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-family: inherit;
  background: var(--color-surface);
  color: var(--color-text);
}

.recurring-preview {
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  margin-top: var(--space-4);
  border: 1px solid var(--color-border-subtle);
}

.preview-list { display: flex; flex-direction: column; gap: var(--space-1); }

.preview-item {
  display: flex;
  gap: var(--space-3);
  font-size: var(--font-size-sm);
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface);
  border-radius: var(--radius-sm);
  align-items: center;
}

.preview-day {
  font-weight: var(--font-weight-bold);
  color: var(--color-accent);
  min-width: 35px;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .content-area { padding: var(--space-6); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .dashboard-grid { grid-template-columns: 1fr; }
  .top-bar-search { min-width: 120px; max-width: 200px; }
  .top-bar h1 { font-size: var(--font-size-lg); }
  .cal-header { flex-wrap: wrap; }
  .cal-header h3 { min-width: 0; flex: 1; text-align: left; }
  .cal-header .select-filter { width: 100%; margin-top: var(--space-2); }
  .attendance-calendar-wrapper { padding: var(--space-4); }
  .cal-sessions-panel { padding: var(--space-4); }
}

@media (max-width: 768px) {
  .login-container { grid-template-columns: 1fr; max-width: 420px; }
  .login-decoration { padding: var(--space-8) var(--space-6); }
  .login-logo { width: 100px; height: 100px; }
  .login-brand { font-size: var(--font-size-2xl); }
  .login-form-container { padding: var(--space-8) var(--space-6); }

  .app { grid-template-columns: 1fr; }

  .sidebar {
    width: 280px;
    transform: translateX(-100%);
    box-shadow: var(--shadow-2xl);
  }

  .sidebar.open { transform: translateX(0); }
  .main-content { margin-left: 0; width: 100%; }

  .menu-toggle { display: flex; align-items: center; justify-content: center; }

  .top-bar { padding: var(--space-3) var(--space-4); gap: var(--space-3); }
  .top-bar h1 { font-size: var(--font-size-lg); }
  .top-bar-search { display: none; }
  .content-area { padding: var(--space-4); }

  .stats-grid { grid-template-columns: 1fr 1fr; gap: var(--space-3); }
  .stat-card { padding: var(--space-4); }
  .stat-info h3 { font-size: var(--font-size-2xl); }

  .dashboard-grid, .categories-grid, .coaches-grid, .catalogs-grid {
    grid-template-columns: 1fr;
  }

  .section-header { flex-direction: column; align-items: stretch; }
  .section-actions { flex-wrap: wrap; }
  .section-actions .btn, .section-actions .select-filter { flex: 1; min-width: 140px; }

  .training-card {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-4);
  }

  .training-date-badge { display: flex; align-items: baseline; gap: var(--space-2); }
  .training-date-badge .day { font-size: var(--font-size-2xl); }
  .training-actions { margin-left: 0; width: 100%; justify-content: flex-end; }

  .modal { max-width: calc(100vw - 32px); max-height: 90vh; border-radius: var(--radius-lg); }
  .modal-body .form-row { grid-template-columns: 1fr; }
  .card { padding: var(--space-4); }
  .attendance-calendar-wrapper { padding: var(--space-4); }
  .cal-sessions-panel { padding: var(--space-4); }
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: var(--radius-full); }
::-webkit-scrollbar-thumb:hover { background: var(--color-text-muted); }

/* ===== UTILITIES ===== */
.animate-in { animation: animateIn var(--duration-slow) var(--ease-out) both; }
@keyframes animateIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

.stagger-1 { animation-delay: 50ms; }
.stagger-2 { animation-delay: 100ms; }
.stagger-3 { animation-delay: 150ms; }
.stagger-4 { animation-delay: 200ms; }