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

html, body {
    height: 100%;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    overflow-x: hidden;
}

/* ===== VARIABLES CSS ===== */
:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #283966 100%);
    --secondary-gradient: linear-gradient(135deg, #98baec 0%, #3328d4 100%);
    --success-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --dark-gradient: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --shadow-light: 0 8px 32px rgba(0, 0, 0, 0.1);
    --shadow-dark: 0 15px 35px rgba(0, 0, 0, 0.2);
    --text-dark: #2c3e50;
    --text-light: #7f8c8d;
    --white: #ffffff;
    --border-radius: 20px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== CONTAINER PRINCIPAL ===== */
.login-container {
    min-height: 100vh;
    background: var(--primary-gradient);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

/* ===== PARTÍCULAS ANIMADAS ===== */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.particle {
    position: absolute;
    bottom: -10px;
    width: 10px;
    height: 10px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    animation: rise 4s infinite linear;
}

.particle:nth-child(odd) {
    width: 6px;
    height: 6px;
    background: rgba(255, 255, 255, 0.2);
}

@keyframes rise {
    to {
        bottom: 100vh;
        transform: translateX(100px);
        opacity: 0;
    }
}

/* ===== HEADER ===== */
.login-header {
    padding: 2rem;
    z-index: 10;
    position: relative;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 1rem;
    max-width: 500px;
    margin: 0 auto;
}

.logo {
    height: 60px;
    width: auto;
    /*filter: brightness(0) invert(1);/*/
}

.company-info h1 {
    color: var(--white);
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.company-info p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1rem;
    font-weight: 300;
}

/* ===== MAIN CONTENT ===== */
.login-main {
    flex: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    gap: 4rem;
    z-index: 10;
    position: relative;
}

/* ===== SECCIÓN DE IMAGEN ===== */
.image-section {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-dark);
}

.bg-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(54, 78, 182, 0.699), rgba(131, 90, 173, 0.342));
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 3rem;
    color: var(--white);
}

.image-overlay h2 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.image-overlay > p {
    font-size: 1.2rem;
    margin-bottom: 3rem;
    opacity: 0.95;
}

.features {
    display: flex;
    gap: 2rem;
    margin-top: 2rem;
}

.feature {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 15px;
    backdrop-filter: blur(10px);
}

.feature i {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.feature span {
    font-size: 0.9rem;
    font-weight: 500;
}

/* ===== SECCIÓN DEL FORMULARIO ===== */
.form-section {
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-card {
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-dark);
    padding: 3rem;
    width: 100%;
    max-width: 400px;
    position: relative;
    overflow: hidden;
}

.login-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
}

.card-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.card-header i {
    font-size: 3rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.card-header h3 {
    color: var(--text-dark);
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.card-header p {
    color: var(--text-light);
    font-size: 1rem;
}

/* ===== FORMULARIO ===== */
.login-form {
    margin-bottom: 2rem;
}

.input-group {
    margin-bottom: 2rem;
}

.input-wrapper {
    position: relative;
}

.input-wrapper input {
    width: 100%;
    height: 56px;
    border: 2px solid #e1e8ed;
    border-radius: 12px;
    padding: 1rem 1rem 0.5rem 3rem;
    font-size: 1rem;
    background: #f8fafc;
    transition: var(--transition);
    outline: none;
}

.input-wrapper input:focus {
    border-color: #667eea;
    background: var(--white);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.input-wrapper label {
    position: absolute;
    top: 50%;
    left: 3rem;
    transform: translateY(-50%);
    color: var(--text-light);
    font-size: 1rem;
    pointer-events: none;
    transition: var(--transition);
}

.input-wrapper.focused label,
.input-wrapper.filled label {
    top: 0.75rem;
    font-size: 0.75rem;
    color: #667eea;
    font-weight: 500;
}

.input-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-light);
    font-size: 1.2rem;
    z-index: 2;
}

.input-wrapper.focused .input-icon {
    color: #667eea;
}

.input-line {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 2px;
    width: 0;
    background: var(--primary-gradient);
    transition: var(--transition);
}

.input-wrapper.focused .input-line {
    width: 100%;
}

.password-toggle {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    padding: 0.5rem;
    transition: var(--transition);
}

.password-toggle:hover {
    color: #667eea;
}

/* ===== OPCIONES DEL FORMULARIO ===== */
.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.remember-me {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--text-dark);
}

.remember-me input {
    display: none;
}

.checkmark {
    width: 18px;
    height: 18px;
    border: 2px solid #ddd;
    border-radius: 4px;
    margin-right: 0.5rem;
    position: relative;
    transition: var(--transition);
}

.remember-me input:checked + .checkmark {
    background: var(--primary-gradient);
    border-color: #667eea;
}

.remember-me input:checked + .checkmark::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--white);
    font-size: 12px;
    font-weight: bold;
}

/* ===== BOTÓN DE LOGIN ===== */
.login-btn {
    width: 100%;
    height: 56px;
    background: var(--primary-gradient);
    border: none;
    border-radius: 12px;
    color: var(--white);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-light);
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(102, 126, 234, 0.4);
}

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

.btn-text {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: var(--transition);
}

.btn-loader {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: var(--transition);
}

.login-btn.loading .btn-text {
    opacity: 0;
}

.login-btn.loading .btn-loader {
    opacity: 1;
}

.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid var(--white);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ===== PIE DE LA TARJETA ===== */
.card-footer {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid #f1f3f4;
}

.website-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-light);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

.website-link:hover {
    color: #667eea;
    transform: translateY(-1px);
}

/* ===== ALERTAS ===== */
.alert {
    padding: 0.5rem;
    border-radius: 8px;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
}

.alert-error {
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a52 100%);
    color: var(--white);
}

/* ===== FOOTER ===== */
.login-footer {
    padding: 2rem;
    text-align: center;
    z-index: 10;
    position: relative;
}

.footer-content p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.footer-content p:first-child {
    font-weight: 500;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .login-main {
        grid-template-columns: 1fr;
        gap: 2rem;
        padding: 1rem;
    }
    
    .image-section {
        order: 2;
        height: 300px;
    }
    
    .form-section {
        order: 1;
    }
    
    .features {
        flex-direction: column;
        gap: 1rem;
    }
    
    .feature {
        flex-direction: row;
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .login-header {
        padding: 1rem;
    }
    
    .logo-container {
        flex-direction: column;
        text-align: center;
        gap: 0.rem;
    }
    
    .company-info h1 {
        font-size: 1.5rem;
    }
    
    .login-card {
        padding: 2rem 1.5rem;
        margin: 1rem;
    }
    
    .image-overlay h2 {
        font-size: 2rem;
    }
    
    .image-overlay {
        padding: 2rem;
    }
}

@media (max-width: 480px) {
    .login-main {
        padding: 0.5rem;
    }
    
    .login-card {
        padding: 1.5rem 1rem;
    }
    
    .card-header h3 {
        font-size: 1.5rem;
    }
    
    .features {
        display: none;
    }
}