:root {
  --bg: #0f172a;
  --bg-gradient: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  --card: rgba(30, 41, 59, 0.4);
  --muted: #94a3b8;
  --pri: #3b82f6;
  --pri-light: #60a5fa;
  --pri-glow: rgba(59, 130, 246, 0.4);
  --success: #10b981;
  --err: #ef4444;
  --text: #f8fafc;
  --header-bg: rgba(15, 23, 42, 0.8);
  --header-h: 70px;
  --border: rgba(255, 255, 255, 0.08);
  --input-bg: rgba(15, 23, 42, 0.6);
}

[data-theme="light"] {
  --bg: #f8fafc;
  --bg-gradient: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
  --card: rgba(255, 255, 255, 0.7);
  --muted: #64748b;
  --text: #0f172a;
  --header-bg: rgba(255, 255, 255, 0.8);
  --border: rgba(0, 0, 0, 0.08);
  --input-bg: rgba(255, 255, 255, 0.8);
}

/* base */
* {
  box-sizing: border-box;
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Ubuntu, Cantarell, 'Noto Sans', Arial, sans-serif;
  transition: all .2s ease
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg-gradient);
  background-attachment: fixed;
  color: var(--text);
  display: flex;
  flex-direction: column;
}

/* HEADER FIJO */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  background: var(--header-bg);
  backdrop-filter: saturate(1.5) blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
}

.site-header .wrap {
  max-width: 1000px;
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
}

.brand {
  color: var(--pri);
  font-weight: 800;
  letter-spacing: -0.3px;
  text-decoration: none;
  font-size: 22px;
}

.main-nav a {
  color: var(--text);
  text-decoration: none;
  margin: 0 12px;
  font-weight: 600;
  font-size: 15px;
}

.main-nav a:hover {
  color: var(--pri);
}

/* LAYOUT GENERAL */
header,
main,
footer {
  max-width: 1000px;
  margin: auto;
  padding: 16px;
}

main {
  flex: 1;
  width: 100%;
  padding-top: calc(var(--header-h) + 30px);
  padding-bottom: 60px;
}

footer {
  text-align: center;
  padding-top: 24px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 500;
}

/* CARD (contenedor principal) */
.card {
  background: var(--card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 32px;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.05);
  width: 100%;
  margin: 10px auto;
}

/* Tamaños por vista (gracias a la clase dinámica) */
.card.login,
.card.reset_password,
.card.forgot_password {
  max-width: 480px;
  margin-top: 40px;
}

.card.register {
  max-width: 820px;
  margin-top: 40px;
}

/* Evitar recuadros dobles en vistas premium */
.card.dashboard, 
.card.planificador {
  background: none !important;
  border: none !important;
  box-shadow: none !important;
  padding: 0 !important;
  backdrop-filter: none !important;
}

/* Títulos */
h1 {
  margin: 0;
}

h2 {
  text-align: center;
  color: var(--text);
  font-weight: 800;
  margin: 0 0 24px;
  font-size: 1.8rem;
  letter-spacing: -0.5px;
}

h3,
h4 {
  color: var(--text);
  font-weight: 700;
}

/* Formularios */
.form {
  display: flex;
  justify-content: center;
}

.row {
  display: grid;
  gap: 20px;
}

/* 2 columnas en register (>= 640px) */
.card.register .row {
  grid-template-columns: 1fr;
}

@media (min-width:640px) {
  .card.register .row {
    grid-template-columns: 1fr 1fr;
  }

  .card.register .row>div:nth-last-child(1) {
    grid-column: 1 / -1;
  }
}

/* Inputs y labels */
label {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-weight: 600;
  font-size: 14px;
}

input,
select,
textarea {
  width: 100%;
  padding: 14px 16px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--input-bg);
  color: var(--text);
  font-size: 15px;
  transition: all 0.3s ease;
}

select {
  appearance: none;
}

textarea {
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--pri);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
  background: rgba(15, 23, 42, 0.8);
}

/* Botón */
.btn {
  background: linear-gradient(135deg, var(--pri) 0%, var(--pri-light) 100%);
  color: #fff;
  padding: 14px 20px;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  font-weight: 700;
  font-size: 15px;
  width: 100%;
  box-shadow: 0 6px 15px var(--pri-glow);
  transition: all 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px var(--pri-glow);
}

.btn:active {
  transform: translateY(0);
}

/* Avisos */
.flash {
  background: #e0f2fe;
  color: #0284c7;
  border-left: 4px solid #0ea5e9;
  padding: 16px;
  border-radius: 12px;
  margin-bottom: 20px;
  font-weight: 500;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.03);
}

.err {
  background: #fee2e2;
  color: #b91c1c;
  border-left: 4px solid var(--err);
}

.muted {
  color: var(--muted);
  text-align: center;
  margin-top: 16px;
}

a {
  color: var(--pri);
  font-weight: 600;
}

a:hover {
  color: var(--pri-light);
  text-decoration: underline;
}

.LogInP {
  display: flex;
  justify-content: center;
}

.LogInBtn {
  max-width: 250px;
  display: flex;
  justify-content: center;
  text-decoration: none;
}

.full-width {
  grid-column: 1 / -1;
}

/* Glassmorphism Utilities */
.glass {
  background: rgba(255, 255, 255, 0.03) !important;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.1) !important;
}

.glass-input {
  background: rgba(15, 23, 42, 0.4) !important;
  border: 1px solid rgba(255, 255, 255, 0.08) !important;
  backdrop-filter: blur(4px);
}

.glass-input:focus {
  background: rgba(15, 23, 42, 0.6) !important;
  border-color: var(--pri) !important;
  box-shadow: 0 0 20px rgba(59, 130, 246, 0.15) !important;
}

.badge-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.8em;
  font-weight: 600;
  background: rgba(16, 185, 129, 0.1);
  color: #10b981;
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.dot {
  width: 8px;
  height: 8px;
  background: currentColor;
  border-radius: 50%;
  box-shadow: 0 0 8px currentColor;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { opacity: 1; }
  50% { opacity: 0.4; }
  100% { opacity: 1; }
}

.quick-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.quick-tag {
  cursor: pointer;
  padding: 6px 12px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.05);
  font-size: 0.85em;
  font-weight: 500;
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all 0.2s;
}

.quick-tag:hover {
  background: rgba(59, 130, 246, 0.1);
  border-color: var(--pri);
  transform: translateY(-1px);
}
/* Theme Toggle Button */
.theme-toggle {
  background: var(--border);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 12px;
  border-radius: 10px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1em;
  margin-left: 15px;
  font-weight: 600;
  gap: 6px;
}

.theme-toggle:hover {
  background: var(--pri-glow);
  border-color: var(--pri);
}

[data-theme="light"] .glass {
  background: rgba(255, 255, 255, 0.4) !important;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05) !important;
}

[data-theme="light"] .glass-input {
  background: rgba(255, 255, 255, 0.6) !important;
}