/* ========================================
   ESTILOS - SISTEMA DE AUTENTICACIÓN v3.0
   Optimizado, profesional y accesible
   ======================================== */

/* ========================================
   BOTONES DE AUTENTICACIÓN
   ======================================== */

.btn-auth {
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius-sm);
    border: none;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    font-family: inherit;
    transition: opacity var(--transition-fast);
    margin: 0 var(--spacing-xs);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 36px;
    white-space: nowrap;
}

.btn-login {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-register {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

@media (hover: hover) and (pointer: fine) {
    .btn-login:hover {
        opacity: 0.9;
    }
    
    .btn-register:hover {
        background: rgba(255, 255, 255, 0.15);
    }
}

.btn-auth:active {
    opacity: 0.8;
}

/* ========================================
   USUARIO LOGUEADO
   ======================================== */

.user-logged {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 20px;
    position: relative;
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.3);
    object-fit: cover;
    flex-shrink: 0;
}

.user-username {
    color: white;
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-sm);
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.btn-user-menu {
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    font-size: var(--font-size-xs);
    padding: var(--spacing-xs);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background-color var(--transition-fast);
}

@media (hover: hover) and (pointer: fine) {
    .btn-user-menu:hover {
        background: rgba(255, 255, 255, 0.1);
    }
}

.btn-user-menu:active {
    background: rgba(255, 255, 255, 0.15);
}

/* ========================================
   MENÚ DE USUARIO
   ======================================== */

.user-menu {
    position: absolute;
    top: calc(100% + var(--spacing-sm));
    right: 0;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    min-width: 180px;
    overflow: hidden;
    z-index: var(--z-sticky);
}

.user-menu a,
.user-menu button {
    display: block;
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--color-text);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    background: none;
    border: none;
    text-align: left;
    cursor: pointer;
    font-family: inherit;
    transition: background-color var(--transition-fast);
}

@media (hover: hover) and (pointer: fine) {
    .user-menu a:hover,
    .user-menu button:hover {
        background: var(--bg-tertiary);
    }
}

.user-menu a:active,
.user-menu button:active {
    background: var(--bg-hover);
}

.user-menu .menu-divider {
    height: 1px;
    background: var(--border-color);
    margin: var(--spacing-xs) 0;
}

/* ========================================
   MODAL DE AUTENTICACIÓN
   ======================================== */

.modal-auth {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
}

.modal-auth-content {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-2xl);
    width: 90%;
    max-width: 450px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
}

.modal-auth-content h2 {
    color: var(--color-text);
    margin: 0 0 var(--spacing-xl) 0;
    text-align: center;
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
}

.btn-cerrar-modal {
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    background: none;
    border: none;
    color: var(--color-text);
    font-size: var(--font-size-2xl);
    cursor: pointer;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background-color var(--transition-fast);
    padding: 0;
}

@media (hover: hover) and (pointer: fine) {
    .btn-cerrar-modal:hover {
        background: var(--bg-tertiary);
    }
}

.btn-cerrar-modal:active {
    background: var(--bg-hover);
}

/* ========================================
   FORMULARIOS
   ======================================== */

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    color: var(--color-text);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-sm);
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"] {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    color: var(--color-text);
    font-size: var(--font-size-base);
    font-family: inherit;
    transition: border-color var(--transition-base);
}

.form-group input:focus {
    outline: none;
    border-color: var(--color-primary);
    background: var(--bg-hover);
}

.form-group input::placeholder {
    color: var(--color-text-tertiary);
}

.form-group small {
    display: block;
    color: var(--color-text-tertiary);
    font-size: var(--font-size-xs);
    margin-top: var(--spacing-xs);
    line-height: 1.4;
}

/* ========================================
   CHECKBOX Y ENLACES
   ======================================== */

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    cursor: pointer;
    user-select: none;
}

.checkbox-label input[type="checkbox"] {
    cursor: pointer;
    width: 16px;
    height: 16px;
    accent-color: var(--color-primary);
}

.checkbox-label a {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
}

@media (hover: hover) and (pointer: fine) {
    .checkbox-label a:hover {
        text-decoration: underline;
    }
}

/* ========================================
   MENSAJES DE ERROR
   ======================================== */

.error-message {
    color: #ff6b6b;
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: rgba(255, 107, 107, 0.1);
    border-radius: var(--border-radius-sm);
    border-left: 3px solid #ff6b6b;
    display: none;
    line-height: 1.5;
}

.error-message:not(:empty) {
    display: block;
}

.success-message {
    color: var(--color-success);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: rgba(16, 185, 129, 0.1);
    border-radius: var(--border-radius-sm);
    border-left: 3px solid var(--color-success);
    display: none;
    line-height: 1.5;
}

.success-message:not(:empty) {
    display: block;
}

/* ========================================
   BOTÓN DE SUBMIT
   ======================================== */

.btn-submit {
    width: 100%;
    padding: var(--spacing-md);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    border-radius: var(--border-radius-md);
    color: white;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    font-family: inherit;
    transition: opacity var(--transition-fast);
    min-height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
}

@media (hover: hover) and (pointer: fine) {
    .btn-submit:hover:not(:disabled) {
        opacity: 0.9;
    }
}

.btn-submit:active:not(:disabled) {
    opacity: 0.8;
}

.btn-submit:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-submit.loading::after {
    content: '';
    width: 16px;
    height: 16px;
    margin-left: var(--spacing-sm);
    border: 2px solid white;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

/* ========================================
   FOOTER DEL MODAL
   ======================================== */

.modal-footer {
    text-align: center;
    margin-top: var(--spacing-xl);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.modal-footer a {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: var(--font-weight-semibold);
}

@media (hover: hover) and (pointer: fine) {
    .modal-footer a:hover {
        text-decoration: underline;
    }
}

/* ========================================
   NOTA DE PRIVACIDAD
   ======================================== */

.privacy-note {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: rgba(102, 126, 234, 0.1);
    border-radius: var(--border-radius-md);
    border-left: 3px solid #667eea;
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.privacy-note strong {
    color: var(--color-text);
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: var(--font-weight-semibold);
}

.privacy-note a {
    color: var(--color-primary);
    text-decoration: none;
}

@media (hover: hover) and (pointer: fine) {
    .privacy-note a:hover {
        text-decoration: underline;
    }
}

/* ========================================
   LOADING STATE
   ======================================== */

.form-loading {
    position: relative;
    pointer-events: none;
}

.form-loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--border-radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ========================================
   VALIDACIÓN DE CAMPOS
   ======================================== */

.form-group input.invalid {
    border-color: #ff6b6b;
    background: rgba(255, 107, 107, 0.05);
}

.form-group input.valid {
    border-color: var(--color-success);
}

.form-group .field-error {
    color: #ff6b6b;
    font-size: var(--font-size-xs);
    margin-top: var(--spacing-xs);
    display: none;
}

.form-group input.invalid ~ .field-error {
    display: block;
}

/* ========================================
   PASSWORD STRENGTH INDICATOR
   ======================================== */

.password-strength {
    margin-top: var(--spacing-sm);
    height: 4px;
    background: var(--bg-tertiary);
    border-radius: 2px;
    overflow: hidden;
}

.password-strength-bar {
    height: 100%;
    width: 0%;
    transition: width var(--transition-base), background-color var(--transition-base);
    border-radius: 2px;
}

.password-strength-bar.weak {
    width: 33%;
    background: #ff6b6b;
}

.password-strength-bar.medium {
    width: 66%;
    background: var(--color-warning);
}

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

.password-strength-text {
    font-size: var(--font-size-xs);
    margin-top: var(--spacing-xs);
    color: var(--color-text-tertiary);
}

/* ========================================
   SOCIAL LOGIN (si se necesita)
   ======================================== */

.social-login {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border-color);
}

.social-login-title {
    text-align: center;
    color: var(--color-text-tertiary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.social-login-title::before,
.social-login-title::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 30%;
    height: 1px;
    background: var(--border-color);
}

.social-login-title::before {
    left: 0;
}

.social-login-title::after {
    right: 0;
}

.social-buttons {
    display: flex;
    gap: var(--spacing-md);
}

.btn-social {
    flex: 1;
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    color: var(--color-text);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    font-family: inherit;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    transition: background-color var(--transition-fast);
}

@media (hover: hover) and (pointer: fine) {
    .btn-social:hover {
        background: var(--bg-hover);
    }
}

.btn-social:active {
    background: var(--bg-active);
}

/* ========================================
   RESPONSIVE - MÓVIL
   ======================================== */

@media (max-width: 767px) {
    .modal-auth-content {
        padding: var(--spacing-xl);
        width: 95%;
        max-height: 95vh;
    }
    
    .modal-auth-content h2 {
        font-size: var(--font-size-xl);
    }
    
    .btn-auth {
        font-size: var(--font-size-xs);
        padding: 6px var(--spacing-md);
        min-height: 32px;
    }
    
    .user-username {
        display: none;
    }
    
    .user-logged {
        padding: var(--spacing-xs);
    }
    
    .form-group {
        margin-bottom: var(--spacing-md);
    }
    
    .btn-cerrar-modal {
        top: var(--spacing-md);
        right: var(--spacing-md);
    }
    
    .social-buttons {
        flex-direction: column;
    }
}

/* ========================================
   ACCESIBILIDAD
   ======================================== */

.btn-auth:focus-visible,
.btn-user-menu:focus-visible,
.btn-submit:focus-visible,
.btn-cerrar-modal:focus-visible,
.user-menu a:focus-visible,
.user-menu button:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.form-group input:focus-visible {
}

@media (prefers-reduced-motion: reduce) {
    .btn-submit.loading::after {
        animation: none;
    }
}

/* ========================================
   UTILIDADES
   ======================================== */

.text-center {
    text-align: center;
}

.text-small {
    font-size: var(--font-size-xs);
}

.mt-2 {
    margin-top: var(--spacing-md);
}

.mb-2 {
    margin-bottom: var(--spacing-md);
}

.hidden {
    display: none !important;
}

.visible {
    display: block !important;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* ========================================
   ESTILOS DE AUTENTICACIÓN PARA NAVBAR
   ======================================== */

#auth-container {
    align-items: center;
}

.btn-auth {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1.25rem;
  background: transparent;
  border: 1px solid var(--forum-border);
  border-radius: 30px;
  color: var(--forum-accent);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);

}

.btn-auth .btn-icon {
    font-size: 16px;
    line-height: 1;
}

.btn-auth .btn-text {
    line-height: 1;
}

.btn-login {
    border: 1px solid rgba(255, 255, 255, 0.2);
}

@media (hover: hover) and (pointer: fine) {
    .btn-login:hover {
    background: rgba(114, 214, 255, 0.1);
    border-color: var(--forum-accent);
    color: var(--forum-text);
    }
}

.btn-login:active {
    background: rgba(255, 255, 255, 0.15);
}

.btn-register {
    border: 1px solid rgba(255, 255, 255, 0.2);
}

@media (hover: hover) and (pointer: fine) {
    .btn-register:hover {
            background: rgba(114, 214, 255, 0.1);
    border-color: var(--forum-accent);
    color: var(--forum-text);
    }
}

.btn-register:active {
    background: rgba(255, 255, 255, 0.15);
}

.user-logged {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 7px 12px;
    border-radius: 30px;
    transition: background-color 0.2s ease;
}

@media (hover: hover) and (pointer: fine) {
    .user-logged:hover {
        background: rgba(255, 255, 255, 0.12);
    }
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.3);
    object-fit: cover;
    flex-shrink: 0;
}

.user-username {
    color: white;
    font-weight: 600;
    font-size: 14px;
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.btn-user-menu {
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background-color 0.2s ease;
    opacity: 0.7;
}

.btn-user-menu svg {
    width: 12px;
    height: 12px;
}

@media (hover: hover) and (pointer: fine) {
    .btn-user-menu:hover {
        background: rgba(255, 255, 255, 0.1);
        opacity: 1;
    }
}

.btn-user-menu:active {
    background: rgba(255, 255, 255, 0.15);
}

.user-menu {
    position: absolute;
    top: calc(100% + 12px);
    right: 0;
    min-width: 200px;
    background: rgba(26, 26, 46, 0.98);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    z-index: 1000;
    overflow: hidden;
}

.user-menu a,
.user-menu button {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 12px 16px;
    color: white;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    background: none;
    border: none;
    text-align: left;
    cursor: pointer;
    font-family: inherit;
    transition: background-color 0.15s ease;
}

.user-menu a span,
.user-menu button span {
    font-size: 16px;
    width: 20px;
    text-align: center;
}

@media (hover: hover) and (pointer: fine) {
    .user-menu a:hover,
    .user-menu button:hover {
        background: rgba(255, 255, 255, 0.08);
    }
}

.user-menu a:active,
.user-menu button:active {
    background: rgba(255, 255, 255, 0.12);
}

.menu-divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.1);
    margin: 4px 0;
}

/* ========================================
   RESPONSIVE - TABLET
   ======================================== */

@media (max-width: 1024px) {
    .btn-auth {
        padding: 6px 12px;
        font-size: 13px;
    }
    
    .btn-auth .btn-icon {
        font-size: 14px;
    }
    
    .user-username {
        max-width: 100px;
        font-size: 13px;
    }
}

/* ========================================
   RESPONSIVE - MÓVIL
   ======================================== */

@media (max-width: 768px) {
    #auth-container {
        gap: 6px;
    }
    
    .btn-auth {
        padding: 6px 10px;
        font-size: 0;
        min-width: 36px;
        border-radius: 8px;
    }
    
    .btn-auth .btn-icon {
        font-size: 16px;
        margin: 0;
    }
    

    
    .user-logged {
        padding: 6px;
        gap: 0;
    }
    
    .user-username {
        display: none;
    }
    
    .user-avatar {
        width: 32px;
        height: 32px;
    }
    
    .btn-user-menu {
        display: none;
    }
    
    .user-menu {
        right: -8px;
        min-width: 180px;
    }
}

/* ========================================
   ESTADOS DE FOCUS (Accesibilidad)
   ======================================== */

.btn-auth:focus-visible,
.btn-user-menu:focus-visible {
    outline: 2px solid #667eea;
    outline-offset: 2px;
}

.user-menu a:focus-visible,
.user-menu button:focus-visible {
    outline: 2px solid #667eea;
    outline-offset: -2px;
    background: rgba(255, 255, 255, 0.08);
}

/* ========================================
   ANIMACIONES DESHABILITADAS
   ======================================== */

@media (prefers-reduced-motion: reduce) {
    .btn-auth,
    .user-logged,
    .btn-user-menu,
    .user-menu a,
    .user-menu button {
        transition: none;
        border: 1px solid var(--forum-border);
          cursor: pointer;
    }

}

/* ========================================
   PASSWORD TOGGLE
   ======================================== */

.password-input-wrapper {
    position: relative;
}

.btn-toggle-password {
    position: absolute;
    right: 10px;
    top: 31%;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 16px;
    opacity: 0.6;
    transition: opacity 0.2s;
}

.btn-toggle-password:hover {
    opacity: 1;
}

/* ========================================
   CONNECTION INDICATOR
   ======================================== */

.connection-indicator {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    z-index: 9999;
    transition: background-color 0.3s;
}

.connection-indicator.online {
    background: #10b981;
}

.connection-indicator.offline {
    background: #ff6b6b;
}

@media (max-width: 768px) {
    #auth-container {
        display: flex;
        flex-direction: row;     /* ← Mantiene horizontal */
        gap: 6px;
        align-items: center;
        flex-wrap: nowrap;       /* ← Evita que salten a otra línea */
    }
    
    .btn-auth {
        padding: 6px 12px;
        font-size: 12px;         /* ← Texto más pequeño pero visible */
        min-width: auto;
        border-radius: 20px;
        white-space: nowrap;     /* ← Evita que el texto se parta */
    }
    
    .btn-auth .btn-icon {
        font-size: 13px;
        margin-right: 4px;
    }
    
    .user-username {
        display: none;
    }
}

@media (max-width: 768px) {
    .foro-actions {
        display: flex;
        flex-direction: column;  /* ← Cambia a columna (vertical) */
        align-items: stretch;
        gap: 10px;
    }
    
    #auth-container {
        display: flex;
        flex-direction: row;     /* ← Botones horizontales */
        justify-content: center; /* ← Centrados */
        align-items: center;
        gap: 8px;
        width: 100%;
        order: 1;  /* ← Primero: los botones (arriba) */
    }
    
    .search-wrapper {
        width: 100%;
        order: 2;  /* ← Segundo: la búsqueda (abajo) */
    }
    
    .btn-auth {
        padding: 6px 14px;
        font-size: 13px;
        min-width: auto;
        border-radius: 20px;
        white-space: nowrap;
    }
    
    .btn-auth .btn-icon {
        font-size: 14px;
        margin-right: 5px;
    }
    
    .user-username {
        display: none;
    }
}