/* ============================================================
   Carbon Design System — Login / Auth page
   Referencia: https://carbondesignsystem.com/patterns/login/
   ============================================================ */

.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: transparent;
    padding: var(--carbon-spacing-05);
}

.login-card {
    background: var(--carbon-bg-2);
    border: none;
    border-radius: 0;
    box-shadow: none;
    padding: 2.5rem;
    width: 100%;
    max-width: 400px;
}

/* ── Header ── */
.login-header {
    text-align: left;          /* Carbon alinea a la izquierda */
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--carbon-separator);
    padding-bottom: 1.5rem;
}
.login-header h2 {
    font-family: 'IBM Plex Sans', system-ui, sans-serif;
    color: var(--carbon-text-01);
    font-weight: 300;           /* Carbon usa Light para títulos grandes */
    font-size: 1.75rem;
    letter-spacing: 0;
    margin-bottom: 0.375rem;
}
.login-header p {
    font-family: 'IBM Plex Sans', system-ui, sans-serif;
    color: var(--carbon-text-02);
    margin: 0;
    font-size: 0.875rem;
}

/* ── Form groups ── */
.form-group { margin-bottom: 1.5rem; }
.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--carbon-text-02);
    font-family: 'IBM Plex Sans', system-ui, sans-serif;
    font-weight: 400;
    font-size: 0.75rem;
    letter-spacing: 0.32px;
}

/* ── Login inputs ── */
.login-form .form-control {
    width: 100%;
    padding: 0 1rem;
    height: 3rem;
    background-color: var(--carbon-ui-01) !important;
    border: none !important;
    border-bottom: 1px solid var(--carbon-ui-04) !important;
    border-radius: 0 !important;
    font-family: 'IBM Plex Sans', system-ui, sans-serif;
    font-size: 0.875rem;
    box-sizing: border-box;
    box-shadow: none !important;
    transition: background-color 70ms ease, outline 70ms ease;
    color: var(--carbon-text-01);
}
.login-form .form-control:hover:not(:focus) {
    background-color: var(--carbon-hover-ui) !important;
}
.login-form .form-control:focus {
    outline: 2px solid var(--carbon-blue) !important;
    outline-offset: -2px !important;
    background-color: var(--carbon-ui-01) !important;
    border-bottom: none !important;
    box-shadow: none !important;
}

/* ── Login button ── */
.btn-login {
    width: 100%;
    padding: 0 1rem;
    height: 4rem;               /* Carbon XL button height */
    background-color: var(--carbon-blue);
    color: #ffffff;
    border: none;
    border-radius: 0;
    font-family: 'IBM Plex Sans', system-ui, sans-serif;
    font-size: 1rem;
    font-weight: 400;
    letter-spacing: 0;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;  /* Carbon alinea icono a la derecha */
    gap: 0.5rem;
    box-shadow: none;
    margin-top: 0.5rem;
    transition: background-color 70ms cubic-bezier(0,0,0.38,0.9);
}
.btn-login:hover:not(:disabled) {
    background-color: var(--carbon-blue-hover);
    box-shadow: none;
    transform: none;
}
.btn-login:active:not(:disabled) {
    background-color: var(--carbon-blue-active);
    transform: none;
}
.btn-login:disabled {
    background-color: var(--carbon-ui-03);
    color: var(--carbon-text-03);
    cursor: not-allowed;
    transform: none;
}
.btn-login:focus {
    outline: 2px solid #ffffff;
    outline-offset: -4px;
}

/* ── Alerts ── */
.login-form .alert {
    padding: 0.875rem 1rem;
    border-radius: 0;
    margin-bottom: 1rem;
    font-family: 'IBM Plex Sans', system-ui, sans-serif;
    font-size: 0.875rem;
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    border: none;
    border-left: 3px solid var(--carbon-red);
}
.login-form .alert-danger {
    background-color: var(--carbon-red-light);
    color: var(--carbon-text-01);
}

/* ── Spinner ── */
.loading-spinner {
    display: inline-block;
    font-size: 1rem;
}

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