/**
 * Estilos para Páginas de Autenticación
 * Oshun POS - Sistema de Punto de Venta e Inventario
 * Paleta Azul Profesional
 *
 * @version 2.0.0
 * @since 2025-12-28
 */

/* =====================================================
   RESET Y BASE
   ===================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body.auth-page {
    font-family: var(--font-sans);
    color: var(--gray-900);
    background: var(--gradient-fluid);
    min-height: 100vh;
    line-height: 1.6;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

/* =====================================================
   CONTAINER CENTRADO
   ===================================================== */
.auth-container {
    display: flex;
    align-items: stretch;
    max-width: 900px;
    width: 100%;
    background: white;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-2xl);
    animation: fadeInUp 0.6s var(--transition-smooth);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* =====================================================
   COLUMNA BRANDING (IZQUIERDA) - AZUL OSHUN
   ===================================================== */
.auth-branding {
    background: var(--gradient-primary);
    color: white;
    padding: 50px 40px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
    flex: 0 0 45%;
}

.auth-branding::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(137, 148, 202, 0.15) 0%, transparent 70%);
    animation: rotateGlow 40s linear infinite;
}

@keyframes rotateGlow {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.branding-content {
    position: relative;
    z-index: 1;
}

.logo {
    text-align: center;
    margin-bottom: 35px;
}

.logo img {
    max-width: 220px;
    height: auto;
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.15));
}

.tagline {
    font-size: 1rem;
    opacity: 0.95;
    margin-bottom: 40px;
    line-height: 1.6;
    text-align: center;
}

.features {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 18px;
    background: rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(8px);
    transition: var(--transition-base);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.feature-item:hover {
    background: rgba(255, 255, 255, 0.18);
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
}

.feature-item i {
    font-size: 1.4rem;
    flex-shrink: 0;
}

.feature-item span {
    font-size: 0.95rem;
}

.branding-footer {
    position: relative;
    z-index: 1;
    text-align: center;
    opacity: 0.85;
    font-size: 0.875rem;
    margin-top: 30px;
}

.version {
    margin-top: 6px;
    font-size: 0.8rem;
    opacity: 0.75;
}

/* =====================================================
   COLUMNA FORMULARIO (DERECHA)
   ===================================================== */
.auth-form-container {
    padding: 50px 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    flex: 1;
}

.auth-form-wrapper {
    width: 100%;
    max-width: 400px;
}

/* =====================================================
   MENSAJES FLASH
   ===================================================== */
.flash-messages {
    margin-bottom: 25px;
}

.alert {
    padding: 14px 18px;
    border-radius: var(--radius-md);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.9rem;
    animation: slideDown var(--transition-smooth);
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.alert i {
    font-size: 1.15rem;
    flex-shrink: 0;
}

.alert-success {
    background: var(--color-success-light);
    color: var(--color-success-dark);
    border-left: 4px solid var(--color-success);
}

.alert-error {
    background: var(--color-error-light);
    color: var(--color-error-dark);
    border-left: 4px solid var(--color-error);
}

.alert-warning {
    background: var(--color-warning-light);
    color: var(--color-warning-dark);
    border-left: 4px solid var(--color-warning);
}

.alert-info {
    background: var(--color-info-light);
    color: var(--color-info-dark);
    border-left: 4px solid var(--color-info);
}

/* =====================================================
   ENCABEZADO DE FORMULARIO
   ===================================================== */
.form-header {
    text-align: center;
    margin-bottom: 35px;
}

.form-header h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 8px;
}

.form-header p {
    color: var(--gray-600);
    font-size: 0.925rem;
}

/* =====================================================
   FORMULARIO
   ===================================================== */
.auth-form {
    width: 100%;
}

.form-group {
    margin-bottom: 22px;
}

.form-group label {
    display: block;
    font-weight: 500;
    color: var(--gray-800);
    margin-bottom: 8px;
    font-size: 0.925rem;
}

.form-group label i {
    margin-right: 7px;
    color: var(--color-primary);
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    font-size: 0.95rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    transition: var(--transition-base);
    font-family: var(--font-sans);
    background: white;
    color: var(--gray-900);
}

.form-control:hover {
    border-color: var(--gray-300);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(38, 55, 125, 0.08);
}

.form-control::placeholder {
    color: var(--gray-500);
}

/* =====================================================
   CAMPO DE CONTRASEÑA CON TOGGLE
   ===================================================== */
.password-input-wrapper {
    position: relative;
}

.password-input-wrapper .form-control {
    padding-right: 50px;
}

.toggle-password {
    position: absolute;
    right: 5px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--gray-500);
    cursor: pointer;
    padding: 8px 12px;
    font-size: 1.05rem;
    transition: var(--transition-base);
    border-radius: var(--radius-sm);
}

.toggle-password:hover {
    color: var(--color-primary);
    background: var(--gray-50);
}

.toggle-password:focus {
    outline: none;
}

/* =====================================================
   MENSAJES DE ERROR
   ===================================================== */
.error-message {
    display: block;
    color: var(--color-error);
    font-size: 0.825rem;
    margin-top: 6px;
    min-height: 18px;
}

/* =====================================================
   OPCIONES DE FORMULARIO
   ===================================================== */
.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    font-size: 0.875rem;
}

.checkbox-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
}

.checkbox-wrapper input[type="checkbox"] {
    width: 17px;
    height: 17px;
    cursor: pointer;
    accent-color: var(--color-primary);
}

.checkbox-wrapper label {
    cursor: pointer;
    user-select: none;
    color: var(--gray-700);
    font-weight: 400;
    margin: 0;
}

.link-secondary {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-fast);
}

.link-secondary:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

/* =====================================================
   BOTONES
   ===================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 13px 28px;
    font-size: 0.975rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-base);
    text-decoration: none;
    font-family: var(--font-sans);
}

.btn:focus {
    outline: none;
    box-shadow: 0 0 0 4px rgba(38, 55, 125, 0.15);
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-primary);
}

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

.btn-block {
    width: 100%;
}

.btn-link {
    background: transparent;
    color: var(--gray-600);
    padding: 8px 16px;
}

.btn-link:hover {
    color: var(--color-primary);
    background: var(--gray-50);
}

/* =====================================================
   PIE DE FORMULARIO
   ===================================================== */
.form-footer {
    margin-top: 25px;
    text-align: center;
}

.help-text {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: var(--gray-600);
    font-size: 0.875rem;
    padding: 14px;
    background: var(--gray-50);
    border-radius: var(--radius-md);
}

/* =====================================================
   INFORMACIÓN
   ===================================================== */
.info-box {
    background: var(--color-info-light);
    border-left: 4px solid var(--color-info);
    padding: 14px;
    border-radius: var(--radius-md);
    margin-bottom: 22px;
    display: flex;
    gap: 12px;
}

.info-box i {
    color: var(--color-info-dark);
    font-size: 1.15rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.info-box p {
    color: var(--color-info-dark);
    font-size: 0.875rem;
    margin: 0;
}

/* =====================================================
   REQUISITOS DE CONTRASEÑA
   ===================================================== */
.password-requirements {
    background: var(--gray-50);
    padding: 15px;
    border-radius: var(--radius-md);
    margin-bottom: 20px;
    border: 1px solid var(--gray-200);
}

.requirements-title {
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: 10px;
    font-size: 0.9rem;
}

.requirements-list {
    list-style: none;
    padding: 0;
}

.requirements-list li {
    padding: 5px 0;
    color: var(--gray-600);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: var(--transition-base);
}

.requirements-list li i {
    font-size: 8px;
    color: var(--gray-400);
}

.requirements-list li.met {
    color: var(--color-success);
}

.requirements-list li.met i {
    color: var(--color-success);
}

/* =====================================================
   INDICADOR DE FORTALEZA DE CONTRASEÑA
   ===================================================== */
.password-strength {
    margin-bottom: 20px;
}

.strength-label {
    font-size: 0.875rem;
    color: var(--gray-700);
    margin-bottom: 8px;
    font-weight: 500;
}

.strength-meter {
    height: 6px;
    background: var(--gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: 8px;
}

.strength-meter-fill {
    height: 100%;
    width: 0%;
    transition: var(--transition-base);
    border-radius: var(--radius-full);
}

.strength-meter-fill.weak {
    width: 25%;
    background: var(--color-error);
}

.strength-meter-fill.fair {
    width: 50%;
    background: var(--color-warning);
}

.strength-meter-fill.good {
    width: 75%;
    background: var(--color-info);
}

.strength-meter-fill.strong {
    width: 100%;
    background: var(--color-success);
}

.strength-text {
    font-size: 0.825rem;
    font-weight: 600;
    text-align: right;
}

.strength-text.weak {
    color: var(--color-error);
}

.strength-text.fair {
    color: var(--color-warning);
}

.strength-text.good {
    color: var(--color-info);
}

.strength-text.strong {
    color: var(--color-success);
}

/* =====================================================
   RESPONSIVE DESIGN
   ===================================================== */
@media (max-width: 992px) {
    .auth-container {
        flex-direction: column;
        max-width: 480px;
    }

    .auth-branding {
        flex: auto;
        padding: 35px 30px;
    }

    .logo img {
        max-width: 180px;
    }

    .features {
        gap: 12px;
    }

    .feature-item {
        padding: 12px 16px;
    }

    .auth-form-container {
        padding: 35px 30px;
    }
}

@media (max-width: 576px) {
    body.auth-page {
        padding: 10px;
    }

    .auth-container {
        border-radius: var(--radius-lg);
    }

    .auth-branding {
        padding: 30px 20px;
    }

    .auth-form-container {
        padding: 30px 20px;
    }

    .form-header h2 {
        font-size: 1.5rem;
    }

    .form-options {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
}

/* =====================================================
   ESTADOS DE LOADING
   ===================================================== */
.btn.loading {
    position: relative;
    color: transparent;
    pointer-events: none;
}

.btn.loading::after {
    content: '';
    position: absolute;
    width: 18px;
    height: 18px;
    top: 50%;
    left: 50%;
    margin-left: -9px;
    margin-top: -9px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.7s linear infinite;
}

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

/* =====================================================
   UTILIDADES
   ===================================================== */
.text-danger {
    color: var(--color-error);
}

.text-muted {
    color: var(--gray-600);
}

.mb-0 {
    margin-bottom: 0;
}

.mt-2 {
    margin-top: 8px;
}

.mt-3 {
    margin-top: 16px;
}

.mt-4 {
    margin-top: 24px;
}