/* ============================================================
   ESTILOS LOGIN - Inventario TX
   ============================================================ */

/* Wrapper para centrado */
.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    background: linear-gradient(135deg, var(--color-bg) 0%, #e2e8f0 100%);
    position: relative;
    overflow: hidden;
}

.login-wrapper::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.05) 0%, transparent 50%);
    animation: gradient-shift 15s ease-in-out infinite;
}

/* Tarjeta principal */
.login-card {
    width: 100%;
    max-width: 420px;
    padding: 2.5rem;
    border-radius: var(--radius-2xl);
    background: var(--color-surface);
    box-shadow: var(--shadow-xl);
    position: relative;
    animation: aparecer-escala 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    border: 1px solid var(--color-border);
}

/* Icono de usuario animado */
.login-icon-wrapper {
    display: inline-block;
    position: relative;
}

.login-icon-wrapper::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    width: 40px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    transform: translateX(-50%);
}

.login-icon-wrapper i {
    color: var(--color-primary);
    transition: transform var(--transition-bounce);
    animation: pulso 2s ease-in-out infinite;
}

.login-card:hover .login-icon-wrapper i {
    transform: scale(1.1) rotate(-5deg);
}

/* Titulo */
.login-card h3 {
    font-weight: 700;
    color: var(--color-text-heading);
    margin-bottom: 0.25rem;
}

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

/* Input icon wrapper */
.input-icon-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon-wrapper i {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-muted);
    font-size: 0.9rem;
    transition: all var(--transition-fast);
    pointer-events: none;
    z-index: 2;
}

.input-icon-wrapper .form-control {
    padding-left: 2.75rem;
    padding-right: 2.75rem;
    height: 48px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    transition: all var(--transition-fast);
}

.input-icon-wrapper .form-control:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.input-icon-wrapper:focus-within i {
    color: var(--color-primary);
    transform: translateY(-50%) scale(1.1);
}

/* Password toggle */
.password-toggle {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    color: var(--color-muted);
    cursor: pointer;
    padding: 0.375rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    z-index: 2;
}

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

.password-toggle:active {
    transform: translateY(-50%) scale(0.9);
}

/* Form controls */
.form-control {
    font-size: var(--font-size-base);
    transition: all var(--transition-fast);
}

.form-control:focus {
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
    border-color: var(--color-primary);
}

/* Form labels */
.form-label {
    font-weight: 500;
    color: var(--color-text-heading);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.form-label i {
    color: var(--color-primary);
    font-size: 0.85rem;
}

/* Checkbox */
.form-check-input {
    width: 18px;
    height: 18px;
    border-radius: var(--radius-sm);
    border: 2px solid var(--color-border);
    transition: all var(--transition-fast);
}

.form-check-input:checked {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
}

.form-check-input:focus {
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.form-check-label {
    color: var(--color-muted);
    font-size: var(--font-size-sm);
}

/* Links */
a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-hover);
    text-decoration: underline;
}

/* Switch modo oscuro */
.form-check.form-switch {
    padding-left: 0;
}

.form-check-input[type="checkbox"] {
    width: 40px;
    height: 22px;
    border-radius: var(--radius-full);
    background: var(--color-border);
    border: none;
    cursor: pointer;
    transition: background var(--transition-fast);
}

.form-check-input[type="checkbox"]:checked {
    background: var(--color-primary);
}

.form-check-input[type="checkbox"]::after {
    content: '';
    position: absolute;
    top: 3px;
    left: 3px;
    width: 16px;
    height: 16px;
    background: white;
    border-radius: var(--radius-full);
    transition: transform var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.form-check-input[type="checkbox"]:checked::after {
    transform: translateX(18px);
}

.form-check-label i.fa-moon {
    color: var(--color-muted);
    transition: color var(--transition-fast);
}

/* Boton submit */
.btn-proceder.btn-block {
    width: 100%;
    margin-top: 0.5rem;
}

/* Login footer */
.login-footer {
    margin-top: 1.5rem;
    text-align: center;
    padding-top: 1rem;
    border-top: 1px solid var(--color-border);
}

.login-footer small {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.375rem;
}

.login-footer i {
    color: var(--color-esmeralda);
}

/* Errores de URL (del backend) */
.alert-error {
    background: var(--color-rubi-light);
    color: var(--color-rubi);
    border: 1px solid rgba(225, 29, 72, 0.3);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    font-size: var(--font-size-sm);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    animation: deslizar-entrada var(--transition-normal) both;
}

.alert-error i {
    font-size: 1rem;
    animation: sacudir 0.4s ease;
}

/* Modo oscuro */
body.dark-mode {
    --color-bg: #121212;
    --color-surface: #1e1e1e;
    --color-text: #e4e6eb;
    --color-text-heading: #e4e6eb;
    --color-border: #3a3a3a;
    --color-muted: #a0a0a0;
    --color-primary-light: rgba(59, 130, 246, 0.3);
}

body.dark-mode .login-wrapper {
    background: linear-gradient(135deg, #121212 0%, #1a1a2e 100%);
}

body.dark-mode .login-card {
    border-color: var(--color-border);
}

body.dark-mode .form-control {
    background: #2a2a2a;
    border-color: var(--color-border);
    color: var(--color-text);
}

body.dark-mode .input-icon-wrapper .form-control:focus {
    border-color: var(--color-primary);
    background: #2a2a2a;
}

body.dark-mode .form-check-label {
    color: var(--color-muted);
}

body.dark-mode .form-check-input[type="checkbox"]:not(:checked) {
    background: var(--color-border);
}

body.dark-mode .password-toggle:hover {
    color: var(--color-primary);
    background: var(--color-bg);
}

body.dark-mode a {
    color: #80bdff;
}

body.dark-mode .login-footer {
    border-top-color: var(--color-border);
}

/* Responsive */
@media (max-width: 576px) {
    .login-card {
        padding: 1.75rem 1.25rem;
        border-radius: var(--radius-xl);
    }

    .login-icon-wrapper i {
        font-size: 4rem !important;
    }
}