/* ========================================
   AquaERP Pro - Login Page Styles
   Modern & Responsive Design
   ======================================== */

/* Variables CSS */
:root {
    --primary-color: #0066cc;
    --primary-dark: #004399;
    --primary-light: #3399ff;
    --secondary-color: #00bcd4;
    --success-color: #4caf50;
    --error-color: #f44336;
    --warning-color: #ff9800;
    --text-dark: #1a1a1a;
    --text-light: #666666;
    --border-color: #e0e0e0;
    --bg-light: #f5f7fa;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* Body */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #0066cc 0%, #00bcd4 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    position: relative;
    overflow: hidden;
    color: var(--text-dark);
}

/* Patrón de fondo animado */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="20" height="20" patternUnits="userSpaceOnUse"><path d="M 20 0 L 0 0 0 20" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    z-index: 0;
    pointer-events: none;
    animation: moveBackground 20s linear infinite;
}

@keyframes moveBackground {
    0% {
        transform: translate(0, 0);
    }

    100% {
        transform: translate(20px, 20px);
    }
}

/* Contenedor principal */
.login-container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 450px;
    animation: slideUpIn 0.8s ease-out;
}

@keyframes slideUpIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Tarjeta de login con efecto glassmorphism */
.login-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    box-shadow:
        0 20px 60px rgba(0, 0, 0, 0.3),
        0 0 1px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.18);
}

/* Header de la tarjeta */
.login-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    padding: 15px 30px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

/* Efecto de brillo en el header */
.login-header::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

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

/* Logo animado */
.logo {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    margin-bottom: 15px;
    font-size: 32px;
    color: white;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-10px);
    }
}

.login-header h1 {
    color: white;
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: 0.3px;
}

.login-header p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 14px;
    font-weight: 500;
}

/* Body de la tarjeta */
.login-body {
    padding: 10px 30px;
}

/* Grupo de formulario */
.form-group {
    margin-bottom: 24px;
    animation: fadeInUp 0.6s ease-out backwards;
}

.form-group:nth-child(1) {
    animation-delay: 0.1s;
}

.form-group:nth-child(2) {
    animation-delay: 0.2s;
}

.form-group:nth-child(3) {
    animation-delay: 0.3s;
}

.form-group:nth-child(4) {
    animation-delay: 0.4s;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.form-group label {
    display: block;
    color: var(--text-dark);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
    letter-spacing: 0.2px;
    text-transform: uppercase;
}

.form-group i {
    color: var(--primary-color);
    margin-right: 5px;
}

/* Grupo de input */
.input-group {
    position: relative;
    display: flex;
    align-items: center;
}

.input-group i {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-light);
    font-size: 16px;
    transition: var(--transition);
    pointer-events: none;
}

.input-group input {
    width: 100%;
    padding: 14px 44px 14px 44px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 15px;
    color: var(--text-dark);
    background: white;
    transition: var(--transition);
    outline: none;
}

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

.input-group input:hover {
    border-color: var(--primary-light);
    box-shadow: 0 4px 12px rgba(0, 102, 204, 0.1);
}

.input-group input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 4px 16px rgba(0, 102, 204, 0.25);
    background: rgba(0, 102, 204, 0.02);
}

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

/* Botón toggle para mostrar/ocultar contraseña */
.toggle-password {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    font-size: 16px;
    transition: var(--transition);
    z-index: 2;
    padding: 5px;
}

.toggle-password:hover {
    color: var(--primary-color);
    transform: translateY(-50%) scale(1.1);
}

.toggle-password i {
    pointer-events: none;
}

/* Opciones del formulario */
.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    font-size: 13px;
    animation: fadeInUp 0.6s ease-out 0.35s backwards;
}

.checkbox-group {
    display: flex;
    align-items: center;
}

.checkbox-group input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary-color);
    margin-right: 6px;
}

.checkbox-group label {
    cursor: pointer;
    color: var(--text-dark);
    margin: 0;
    font-weight: 500;
}

.forgot-password {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

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

/* Indicador de fortaleza de contraseña */
.password-strength {
    margin-top: 8px;
    height: 4px;
    background: var(--border-color);
    border-radius: 2px;
    overflow: hidden;
    display: none;
}

.password-strength.active {
    display: block;
}

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

.password-strength-bar.weak {
    width: 33.33%;
    background: var(--error-color);
}

.password-strength-bar.medium {
    width: 66.66%;
    background: var(--warning-color);
}

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

/* Botón de login */
.btn-login {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(0, 102, 204, 0.3);
    position: relative;
    overflow: hidden;
    animation: fadeInUp 0.6s ease-out 0.4s backwards;
    text-transform: uppercase;
}

.btn-login::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 102, 204, 0.4);
}

.btn-login:hover::before {
    width: 300px;
    height: 300px;
}

.btn-login:active {
    transform: translateY(0);
    box-shadow: 0 2px 10px rgba(0, 102, 204, 0.3);
}

.btn-login:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Footer */
.login-footer {
    padding: 20px 30px;
    background: var(--bg-light);
    text-align: center;
    border-top: 1px solid var(--border-color);
    font-size: 13px;
    color: var(--text-light);
    animation: fadeInUp 0.6s ease-out 0.5s backwards;
}

.login-footer p {
    margin: 0;
}

.signup-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

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

/* Alertas */
.alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
    animation: slideDownIn 0.4s ease-out;
    display: none;
}

.alert.show {
    display: block;
}

@keyframes slideDownIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.alert-error {
    background: rgba(244, 67, 54, 0.1);
    border: 1px solid var(--error-color);
    color: var(--error-color);
}

.alert-success {
    background: rgba(76, 175, 80, 0.1);
    border: 1px solid var(--success-color);
    color: var(--success-color);
}

.alert i {
    margin-right: 8px;
}

/* Spinner de carga */
.spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

@media (max-width: 600px) {
    .login-container {
        max-width: 100%;
    }

    .login-header {
        padding: 30px 20px;
    }

    .login-body {
        padding: 30px 20px;
    }

    .login-footer {
        padding: 15px 20px;
    }

    .logo {
        width: 50px;
        height: 50px;
        font-size: 28px;
    }

    .login-header h1 {
        font-size: 24px;
    }

    .login-header p {
        font-size: 12px;
    }

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

    .forgot-password {
        align-self: flex-end;
    }

    .form-group label {
        font-size: 12px;
    }

    .input-group input {
        padding: 12px 12px 12px 40px;
        font-size: 14px;
    }

    .btn-login {
        padding: 12px;
        font-size: 14px;
    }
}

@media (max-width: 400px) {
    .login-header {
        padding: 25px 15px;
    }

    .login-body {
        padding: 25px 15px;
    }

    .login-header h1 {
        font-size: 20px;
    }

    .logo {
        width: 45px;
        height: 45px;
        font-size: 24px;
        margin-bottom: 10px;
    }

    .form-group {
        margin-bottom: 18px;
    }

    .form-group label {
        font-size: 11px;
    }

    .input-group input {
        padding: 11px 11px 11px 38px;
        font-size: 13px;
    }

    .form-options {
        font-size: 12px;
    }

    .checkbox-group input[type="checkbox"] {
        width: 16px;
        height: 16px;
    }
}

/* ========================================
   TEMA OSCURO (PREFERS-COLOR-SCHEME)
   ======================================== */

@media (prefers-color-scheme: dark) {
    :root {
        --text-dark: #f0f0f0;
        --text-light: #b0b0b0;
        --border-color: rgba(255, 255, 255, 0.1);
        --bg-light: rgba(0, 0, 0, 0.2);
    }

    .login-card {
        background: rgba(30, 30, 30, 0.95);
    }

    .input-group input {
        background: rgba(255, 255, 255, 0.05);
        color: #f0f0f0;
        border-color: rgba(255, 255, 255, 0.1);
    }

    .input-group input:hover {
        border-color: var(--primary-light);
        box-shadow: 0 4px 12px rgba(0, 102, 204, 0.15);
    }

    .input-group input:focus {
        background: rgba(0, 102, 204, 0.1);
        border-color: var(--primary-color);
        box-shadow: 0 4px 16px rgba(0, 102, 204, 0.3);
    }

    .login-footer {
        background: rgba(0, 0, 0, 0.3);
        border-top-color: rgba(255, 255, 255, 0.1);
    }

    .alert-error {
        background: rgba(244, 67, 54, 0.15);
    }

    .alert-success {
        background: rgba(76, 175, 80, 0.15);
    }
}

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

/* Focus visible para navegación por teclado */
.btn-login:focus-visible,
.input-group input:focus-visible,
.forgot-password:focus-visible,
.signup-link:focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
}

/* Modo reducir movimiento */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Print styles */
@media print {

    body,
    .login-container,
    .login-card {
        background: white;
        box-shadow: none;
    }
}