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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: #ffffff;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    position: relative;
}

body::before {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    background: #3b82f6;
    border-radius: 50%;
    top: -300px;
    right: -200px;
    opacity: 0.08;
    z-index: 0;
}

body::after {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    background: #06b6d4;
    border-radius: 50%;
    bottom: -200px;
    left: -150px;
    opacity: 0.08;
    z-index: 0;
}

.login-container {
    background: white;
    padding: 50px 40px;
    border-radius: 24px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.08);
    width: 100%;
    max-width: 440px;
    animation: slideUp 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    z-index: 1;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(40px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.login-header {
    text-align: center;
    margin-bottom: 40px;
}

.login-header h1 {
    color: #0f172a;
    margin-bottom: 12px;
    font-size: 32px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.login-header p {
    color: #64748b;
    font-size: 15px;
    font-weight: 400;
    line-height: 1.6;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    color: #0f172a;
    font-weight: 600;
    font-size: 14px;
    letter-spacing: 0.3px;
}

.password-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.password-wrapper input {
    padding-right: 50px !important;
}

.toggle-password {
    position: absolute;
    right: 14px;
    background: none;
    border: none;
    color: #64748b;
    cursor: pointer;
    padding: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    border-radius: 8px;
}

.toggle-password:hover {
    color: #0f172a;
    background: #f1f5f9;
}

.toggle-password:focus {
    outline: none;
    color: #0f172a;
    background: #e2e8f0;
}

.eye-icon {
    pointer-events: none;
}

.form-group input {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid #f1f5f9;
    border-radius: 12px;
    font-size: 15px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: inherit;
    background: #f8fafc;
    color: #0f172a;
    font-weight: 500;
}

.form-group input:hover {
    border-color: #e2e8f0;
    background: #ffffff;
}

.form-group input:focus {
    outline: none;
    border-color: #3b82f6;
    background: #ffffff;
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.08);
    transform: translateY(-1px);
}

.form-group input::placeholder {
    color: #94a3b8;
    font-weight: 400;
}

.btn-login {
    width: 100%;
    background: #0f172a;
    color: white;
    padding: 16px;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 12px rgba(15, 23, 42, 0.15);
    letter-spacing: 0.3px;
    margin-top: 8px;
}

.btn-login:hover {
    background: #1e293b;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(15, 23, 42, 0.2);
}

.btn-login:active {
    transform: translateY(0);
    box-shadow: 0 4px 12px rgba(15, 23, 42, 0.15);
}

.btn-login:disabled {
    background: #94a3b8;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.error {
    background: #fef2f2;
    color: #991b1b;
    padding: 14px 16px;
    border-radius: 12px;
    margin-bottom: 24px;
    border: 1px solid #fee2e2;
    text-align: left;
    font-weight: 500;
    font-size: 14px;
    animation: shake 0.5s ease;
    display: flex;
    align-items: center;
    gap: 10px;
}

.error::before {
    content: '⚠️';
    font-size: 18px;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

.mensaje-exito {
    background: #f0fdf4;
    color: #166534;
    padding: 14px 16px;
    border-radius: 12px;
    margin-bottom: 24px;
    border: 1px solid #d1fae5;
    text-align: left;
    font-weight: 500;
    font-size: 14px;
    animation: slideDown 0.5s ease;
    display: flex;
    align-items: center;
    gap: 10px;
}

.mensaje-exito::before {
    content: '✓';
    font-size: 18px;
    font-weight: bold;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.demo-info {
    background: #f8fafc;
    padding: 20px;
    border-radius: 16px;
    margin-top: 28px;
    border: 1px solid #e2e8f0;
}

.demo-info h3 {
    color: #0f172a;
    margin-bottom: 14px;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.3px;
    text-transform: uppercase;
}

.demo-info p {
    color: #64748b;
    font-size: 14px;
    margin-bottom: 8px;
    line-height: 1.6;
}

.demo-info strong {
    color: #0f172a;
    font-weight: 600;
}

.divider {
    text-align: center;
    margin: 28px 0;
    position: relative;
}

.divider::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    width: 100%;
    height: 1px;
    background: #e2e8f0;
}

.divider span {
    background: white;
    padding: 0 16px;
    color: #94a3b8;
    font-size: 13px;
    font-weight: 500;
    position: relative;
    z-index: 1;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

@media (max-width: 480px) {
    body::before,
    body::after {
        display: none;
    }
    
    .login-container {
        padding: 40px 24px;
        border-radius: 20px;
    }
    
    .login-header {
        margin-bottom: 32px;
    }
    
    .login-header h1 {
        font-size: 26px;
    }
    
    .form-group input {
        padding: 12px 14px;
        font-size: 15px;
    }
    
    .password-wrapper input {
        padding-right: 44px !important;
    }
    
    .btn-login {
        padding: 14px;
        font-size: 15px;
    }
    
    .demo-info {
        padding: 16px;
        margin-top: 24px;
    }
}