/* ===================================================================
 * Login moderno — tarjeta centrada con cabecera de marca verde ATP
 * Verde principal: #008652
 * =================================================================== */

:root {
    --primary-color: #008652;
    --primary-dark:  #006b41;
    --primary-light: #00a366;
    --primary-soft:  rgba(0, 134, 82, 0.10);
    --text-dark:   #2f3a3f;
    --text-medium: #4b555b;
    --text-light:  #6c757d;
    --border-color: rgba(0, 0, 0, 0.10);
    --input-bg:  #ffffff;
    --bg-gray:   #f8f9fa;
    --danger:    #dc3545;
    --success:   #28a745;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 28px rgba(0, 0, 0, 0.15);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html, body { height: 100%; }

body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #e8ecef 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    color: var(--text-dark);
    -webkit-font-smoothing: antialiased;
}

/* ===== Contenedor principal ===== */
.wrapper {
    width: 100%;
    max-width: 460px;
    margin: 0 auto !important;
    animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ===== Tarjeta del formulario ===== */
.form-signin {
    background: #ffffff !important;
    border-radius: var(--radius-lg) !important;
    box-shadow: var(--shadow-lg) !important;
    overflow: hidden;
    padding: 0 !important;
    margin: 0 0 16px !important;
    text-align: left !important;
    border: none !important;
}

/* ===== Cabecera con logo y degradado verde ===== */
.form-signin .logo {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    padding: 50px 30px;
    text-align: center;
    position: relative;
    overflow: hidden;
    margin: 0;
}

.form-signin .logo::before {
    content: "";
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.10) 0%, transparent 70%);
    animation: pulse 18s ease-in-out infinite;
    pointer-events: none;
}

@keyframes pulse {
    0%, 100% { transform: scale(1) rotate(0deg); }
    50%      { transform: scale(1.1) rotate(180deg); }
}

.form-signin .logo img {
    position: relative;
    z-index: 1;
    max-width: 280px;
    height: auto;
    /*filter: brightness(0) invert(1);*/
}

/* ===== Contenido del formulario ===== */
.form-content {
    padding: 36px 34px 32px;
}

.form-signin-heading {
    color: var(--text-dark) !important;
    font-size: 22px;
    font-weight: 600;
    margin: 0 0 6px !important;
    letter-spacing: -0.01em;
    text-align: left;
}

.form-signin .subheading,
.form-signin > p,
.form-content > p {
    color: var(--text-medium);
    font-size: 14px;
    margin: 0 0 22px;
    line-height: 1.5;
}

/* Esconder mensajes estáticos antiguos */
.form-signin #msg { display: none; }

/* ===== Campos ===== */
.form-group,
.field {
    position: relative;
    margin-bottom: 18px;
}

.form-group label,
.field label {
    display: block;
    margin-bottom: 8px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-dark);
    letter-spacing: -0.01em;
}

.control {
    position: relative;
}

/* Inputs base (forma compatible con bootstrap .form-control) */
.form-control,
.control input,
.control select,
.control textarea {
    width: 100%;
    height: 48px;
    padding: 12px 14px 12px 46px !important;
    border: 2px solid var(--border-color) !important;
    border-radius: var(--radius-md) !important;
    background: var(--input-bg) !important;
    font-size: 15px !important;
    color: var(--text-dark) !important;
    outline: none !important;
    transition: var(--transition) !important;
    box-shadow: none !important;
    line-height: 1.4 !important;
}

.form-control::placeholder,
.control input::placeholder {
    color: var(--text-light);
    opacity: 0.6;
}

.form-control:focus,
.control input:focus,
.control select:focus,
.control textarea:focus {
    border-color: var(--primary-color) !important;
    box-shadow: 0 0 0 4px var(--primary-soft) !important;
    background: #ffffff !important;
}

/* Inputs sin icono: padding normal */
.form-control.no-icon,
.control.no-icon input,
textarea.form-control,
select.form-control {
    padding-left: 14px !important;
}

textarea.form-control {
    height: auto;
    min-height: 90px;
    resize: vertical;
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='none' stroke='%236c757d' stroke-width='2' stroke-linecap='round' stroke-linejoin='round' d='M1 1.5l5 5 5-5'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 36px !important;
}

/* ===== Iconos ===== */
.icon--left,
.input-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    color: var(--text-light);
    pointer-events: none;
    transition: var(--transition);
    z-index: 1;
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.control input:focus ~ .icon--left,
.control input:not(:placeholder-shown) ~ .icon--left,
.control input:focus ~ .input-icon,
.form-control:focus ~ .input-icon {
    color: var(--primary-color);
}

/* Botón de mostrar/ocultar contraseña */
.icon-btn {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    border: none;
    background: transparent;
    padding: 8px;
    cursor: pointer;
    color: var(--text-light);
    transition: var(--transition);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
}

.icon-btn:hover {
    color: var(--primary-color);
    background: var(--primary-soft);
}

.hidden { display: none !important; }

/* ===== Captcha ===== */
.captcha-label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 13px;
    color: var(--text-medium);
    margin-bottom: 8px;
    font-weight: 600;
}

.captcha-label b {
    color: var(--primary-color);
    background: var(--primary-soft);
    padding: 3px 12px;
    border-radius: 6px;
    margin: 0 4px;
    font-family: 'Courier New', monospace;
    letter-spacing: 0.05em;
}

.captcha-reload {
    color: var(--text-light) !important;
    text-decoration: none !important;
    font-size: 16px !important;
    padding: 4px 10px;
    border-radius: 6px;
    transition: var(--transition);
    font-weight: normal;
}

.captcha-reload:hover {
    color: var(--primary-color) !important;
    background: var(--primary-soft);
    text-decoration: none !important;
}

/* ===== Row de opciones (recordar / olvidé) ===== */
.login-row,
.form-link-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-top: 6px;
    margin-bottom: 6px;
    font-size: 13px;
}

.check {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-medium);
    cursor: pointer;
    user-select: none;
    margin: 0;
    font-weight: 400;
}

.check input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--primary-color);
    margin: 0;
}

/* ===== Links ===== */
.form-signin a,
.link {
    color: var(--primary-color) !important;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    white-space: nowrap;
}

.form-signin a:hover,
.link:hover {
    color: var(--primary-dark) !important;
    text-decoration: underline;
}

/* ===== Botón principal ===== */
.btn-primary,
.submit {
    width: 100%;
    height: 50px;
    margin-top: 18px !important;
    border: none !important;
    border-radius: var(--radius-md) !important;
    font-weight: 700 !important;
    font-size: 15px !important;
    letter-spacing: 0.02em;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%) !important;
    color: #ffffff !important;
    box-shadow: 0 4px 12px rgba(0, 134, 82, 0.30) !important;
    cursor: pointer;
    transition: var(--transition) !important;
    position: relative;
    overflow: hidden;
    padding: 0 16px !important;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-primary::before,
.submit::before {
    content: "";
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.20), transparent);
    transition: left 0.5s;
}

.btn-primary:hover:not(:disabled),
.submit:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 134, 82, 0.40) !important;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary-color) 100%) !important;
}

.btn-primary:hover:not(:disabled)::before,
.submit:hover:not(:disabled)::before {
    left: 100%;
}

.btn-primary:active:not(:disabled),
.submit:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(0, 134, 82, 0.30) !important;
}

.btn-primary:disabled,
.submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* ===== Pie ===== */
.form-footer {
    margin-top: 22px;
    text-align: center;
    color: var(--text-light);
    font-size: 13px;
    padding-top: 18px;
    border-top: 1px solid var(--border-color);
    line-height: 1.8;
}

.form-footer a { display: inline-block; }

/* Footer fuera de la tarjeta */
.brand-footer {
    text-align: center;
    color: var(--text-light);
    font-size: 12px;
    margin-top: 14px;
    opacity: 0.85;
}

/* ===== Spinner ===== */
@keyframes spin { to { transform: rotate(360deg); } }
.spinner {
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: #ffffff;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    display: inline-block;
    vertical-align: middle;
    margin-right: 8px;
}

/* ===== Estado de alerta ===== */
.alert-box {
    background: rgba(220, 53, 69, 0.08);
    color: var(--danger);
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    margin-bottom: 16px;
    border-left: 3px solid var(--danger);
}

/* ===== Focus visible accesible ===== */
*:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}
button:focus-visible { outline-offset: 4px; }

/* ===== Responsive ===== */
@media only screen and (max-width: 480px) {
    body {
        padding: 0;
        background: #ffffff;
        align-items: stretch;
    }

    .wrapper { max-width: 100%; }

    .form-signin {
        box-shadow: none !important;
        border-radius: 0 !important;
        margin: 0 !important;
        min-height: 100vh;
    }

    .form-content { padding: 30px 24px 28px; }

    .form-signin .logo {
        padding: 36px 20px;
        border-radius: 0;
    }

    .form-signin .logo img { max-width: 200px; }

    .form-control,
    .control input { height: 48px; font-size: 16px; }

    .btn-primary, .submit { height: 50px; }

    .login-row,
    .form-link-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .brand-footer { display: none; }
}