/* RFC-0003 §2 — Identidad visual de Towers.
   Variables de color: NO hardcodear hex en ningún template, usar
   siempre estas variables. */

:root {
  --color-primary: #041E42;      /* azul institucional */
  --color-primary-light: #0a3268;
  --color-accent: #F9423A;       /* rojo/naranja de marca */
  --color-secondary: #44D62C;    /* verde de marca — uso puntual, NO es "success" */
  --color-neutral: #333F48;
  --color-neutral-light: #6b7680;
  --color-bg: #F7F7F6;
  --color-surface: #FFFFFF;
  --color-border: #E2E5E8;

  /* Estados semánticos — distintos de los colores de marca (ver RFC-0003 §2.1) */
  --color-warning: #FFB81C;
  --color-error: #FA4616;
  --color-success: #47D7AC;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --radius: 8px;
  --shadow-sm: 0 1px 3px rgba(4, 30, 66, 0.08);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-neutral);
  font-size: 15px;
  line-height: 1.5;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* --- Layout --- */

.navbar {
  background: var(--color-primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.5rem;
  box-shadow: var(--shadow-sm);
}

.navbar__brand { display: flex; align-items: center; gap: 0.6rem; }

.navbar__search {
  display: flex;
  align-items: center;
  background: rgba(255,255,255,0.12);
  border-radius: 6px;
  padding: 0.35rem 0.6rem;
  flex: 1;
  max-width: 320px;
  margin: 0 1.5rem;
}
.navbar__search input {
  background: transparent;
  border: none;
  color: white;
  font-size: 0.85rem;
  outline: none;
  width: 100%;
}
.navbar__search input::placeholder { color: rgba(255,255,255,0.6); }
.navbar__search button {
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 0.9rem;
  padding: 0 0.2rem;
}
.navbar__brand img { height: 48px; }
.navbar__links { display: flex; gap: 1.25rem; align-items: center; }
.navbar__links a { color: white; opacity: 0.85; font-weight: 500; }
.navbar__links a:hover { opacity: 1; text-decoration: none; }
.navbar__links a.active { opacity: 1; border-bottom: 2px solid var(--color-accent); padding-bottom: 4px; }

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.75rem 1.5rem;
}

.page-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  margin: 0 0 1.25rem;
}

/* --- Componentes --- */

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
  margin-bottom: 1rem;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-card .stat-label { font-size: 0.8rem; color: var(--color-neutral-light); text-transform: uppercase; letter-spacing: 0.03em; }
.stat-card .stat-value { font-size: 1.75rem; font-weight: 700; color: var(--color-primary); margin-top: 0.25rem; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 0.6rem 0.75rem; border-bottom: 1px solid var(--color-border); }
th { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.03em; color: var(--color-neutral-light); }
tr:hover td { background: var(--color-bg); }

.badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  color: white;
}
.badge--success { background: var(--color-success); }
.badge--warning { background: var(--color-warning); color: var(--color-neutral); }
.badge--error { background: var(--color-error); }
.badge--neutral { background: var(--color-neutral-light); }

.btn {
  display: inline-block;
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius);
  border: none;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  text-align: center;
}
.btn--primary { background: var(--color-primary); color: white; }
.btn--primary:hover { background: var(--color-primary-light); text-decoration: none; }
.btn--accent { background: var(--color-accent); color: white; }
.btn--accent:hover { opacity: 0.9; text-decoration: none; }
.btn--outline { background: transparent; color: var(--color-primary); border: 1px solid var(--color-border); }
.btn--outline:hover { border-color: var(--color-primary); text-decoration: none; }

form .field { margin-bottom: 1rem; }
form label { display: block; font-weight: 600; font-size: 0.85rem; margin-bottom: 0.3rem; }
form input, form select, form textarea {
  width: 100%;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 0.9rem;
}
form input:focus, form select:focus, form textarea:focus {
  outline: 2px solid var(--color-primary-light);
  outline-offset: -1px;
}

.alert {
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  margin-bottom: 1rem;
  font-size: 0.9rem;
}
.alert--error { background: #fdeceb; color: var(--color-error); border: 1px solid var(--color-error); }
.alert--success { background: #e9faf4; color: #1f9c78; border: 1px solid var(--color-success); }

/* --- Login --- */

.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
}
.login-card {
  background: white;
  border-radius: var(--radius);
  padding: 2.5rem;
  width: 100%;
  max-width: 380px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.2);
}
.login-card img { height: 64px; margin-bottom: 1.5rem; }