/* ==========================================================================
   BASE.CSS — Reset, tipografía, utilidades y pantalla de Login
   (Master Plan V2 · Fase 5). Requiere tokens.css cargado antes.
   ========================================================================== */

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: var(--font-family-base);
}

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

body {
    background-color: var(--color-neutral-100);
    color: var(--color-neutral-700);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--color-neutral-900);
    font-weight: 600;
    line-height: 1.25;
}

a {
    color: inherit;
}

img {
    max-width: 100%;
}

button {
    font-family: inherit;
}

/* -------------------------------------------------------------------------
   UTILIDADES GENÉRICAS
   ------------------------------------------------------------------------- */
.u-flex { display: flex; }
.u-flex-col { display: flex; flex-direction: column; }
.u-items-center { align-items: center; }
.u-justify-between { justify-content: space-between; }
.u-gap-1 { gap: var(--space-1); }
.u-gap-2 { gap: var(--space-2); }
.u-gap-3 { gap: var(--space-3); }
.u-gap-4 { gap: var(--space-4); }
.u-wrap { flex-wrap: wrap; }
.u-mt-0 { margin-top: 0 !important; }
.u-mb-0 { margin-bottom: 0 !important; }
.u-text-center { text-align: center; }
.u-text-muted { color: var(--color-neutral-500); }
.u-hidden { display: none !important; }
.u-w-full { width: 100%; }

.u-only-mobile { display: none; }
.u-only-desktop { display: initial; }

@media (max-width: 768px) {
    .u-only-mobile { display: initial; }
    .u-only-desktop { display: none !important; }
}

/* -------------------------------------------------------------------------
   ESTADO VACÍO (usado en tablas, listados y tarjetas sin resultados)
   ------------------------------------------------------------------------- */
.empty-state {
    text-align: center;
    padding: var(--space-8) var(--space-4);
    color: var(--color-neutral-500);
}

.empty-state .empty-state-icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-3);
    color: var(--color-neutral-300);
}

.empty-state strong {
    color: var(--color-neutral-700);
}

/* -------------------------------------------------------------------------
   PANTALLA DE LOGIN
   ------------------------------------------------------------------------- */
body.login-page {
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--space-3);
    background: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-primary-dark) 100%);
}

.login-container {
    background-color: var(--color-neutral-0);
    padding: var(--space-8);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 400px;
    text-align: center;
}

.login-header {
    margin-bottom: var(--space-6);
}

.login-header img {
    max-width: 180px;
    margin-bottom: var(--space-5);
}

.login-header img.logo-login-full {
    max-width: 200px;
    max-height: 148px;
    width: auto;
    height: auto;
}

.login-header img.logo-mark {
    max-width: 56px;
    width: 56px;
    height: 56px;
    border-radius: 12px;
    margin: 0 auto var(--space-4);
}

.login-wordmark {
    margin: 0 0 var(--space-3);
    font-size: 1.35rem;
    font-weight: 650;
    letter-spacing: -0.03em;
    color: var(--brand-primary);
}

.login-wordmark span {
    font-weight: 500;
    color: var(--brand-accent);
}

.login-header h2 {
    color: var(--brand-primary);
    font-size: var(--font-size-xl);
    font-weight: 600;
}

.form-group {
    margin-bottom: var(--space-5);
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: var(--space-2);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-neutral-700);
}

.form-control {
    width: 100%;
    padding: var(--space-3);
    border: 1px solid var(--color-neutral-300);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-md);
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
    background-color: var(--color-neutral-0);
    color: var(--color-neutral-800);
}

.form-control:focus {
    outline: none;
    border-color: var(--brand-primary-light);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--brand-primary) 15%, transparent);
}

.btn-login {
    width: 100%;
    padding: var(--space-3);
    background-color: var(--brand-primary);
    color: var(--brand-on-primary);
    border: none;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-md);
    font-weight: 600;
    cursor: pointer;
    transition: background-color var(--transition-base);
    margin-top: var(--space-4);
}

.btn-login:hover {
    background-color: var(--brand-primary-light);
}

.alert-error {
    background-color: var(--color-danger-bg);
    color: var(--color-danger-text);
    padding: var(--space-3);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-6);
    font-size: var(--font-size-base);
    border: 1px solid #fca5a5;
}

.footer-login {
    margin-top: var(--space-6);
    font-size: var(--font-size-xs);
    color: var(--color-neutral-400);
}

/* Colores especiales heredados (usados en algunas vistas antiguas) */
.highlight-pink { color: #d946ef !important; font-weight: 600; }
.highlight-green { color: #22c55e !important; font-weight: 600; }
.highlight-blue { color: #3b82f6 !important; font-weight: 600; }